KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Diagnostics with Phenomenon

1. KEYLESS ACCESS LOCK/UNLOCK CANNOT BE PERFORMED FROM ANY OF THE DOORS

CAUTION:

• Check that there are no other registered access keys inside the vehicle.

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK DOOR LOCK SWITCH. Perform the following switch operations. • Driver’s door lock switch (all model) • Door key cylinder (model with double lock)	Does it operate properly?		Perform the diagnosis for the door lock control system.
2.CHECK TROUBLE PHENOMENON. Check the trouble phenomenon.	Is it only LOCK which does not operate?
3.CHECK OPERATION OF KEYLESS DOOR LOCK. Check that the lock/unlock operates with the keyless operation.	Does it lock/unlock normally?		Check the access key and outside access antenna.
4.CHECK ACCESS KEY. 1) Prepare all access keys registered to the vehicle. 2) Check for whether lock and unlock is possible with all access keys.	Is there any access key which can not lock/unlock?	Replace the access key that does not operate.
5.CHECK CURRENT DATA. 1) Using the Subaru Select Monitor, display the current data «Door switch» of the body integrated unit. 2) Read the data when opening and closing each door and gate.	Does each door data change from ON/OFF?	Replace the collation CM.	Check the door switch circuit.

2. ALL KEYLESS ACCESS FUNCTIONS DO NOT OPERATE

CAUTION:

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK KEYLESS ACCESS FUNCTION STOP. Check for whether the keyless access system is in a stop status.	Is the keyless access system in a stop status?	Release the keyless access function stop status.
2.CHECK COLLATION CM. 1) Disconnect the collation CM connector. 2) Using a tester, measure the voltage between the collation CM connector and chassis ground. Connector & terminal (B421) No. 1 (+) — Chassis ground (−):	Is the voltage 10 V or more?		Repair or replace the open circuit of harness.
3.CHECK COLLATION CM. Using a tester, check continuity between the collation CM connector and chassis ground. Connector & terminal (B421) No. 17 — Chassis ground:	Is there continuity?	Replace the collation CM.	Repair or replace the short circuit of the harness.

3. CANNOT LOCK WITH KEYLESS ACCESS FROM THE DRIVER’S DOOR

CAUTION:

• Check that there are no other registered access keys inside the vehicle.

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK DOOR LOCK SWITCH. Check that the lock/unlock operates with the driver’s door lock switch.	Does it lock/unlock normally?		Check the door lock circuit.
2.CHECK CURRENT DATA. 1) Display the current data «Driver’s seat lock status SW input» of body integrated unit using Subaru Select Monitor. 2) Read the data when locking/unlocking the driver’s side lock actuator.	Does the data change from ON/OFF?		Check the door lock switch circuit.
3.CHECK HARNESS. 1) Disconnect the collation CM connector and antenna connector. 2) Using a tester, check continuity between the collation CM connector and antenna connector. Connector & terminal (B421) No. 3 — (D56) No. 3:	Is there continuity?		Repair or replace the open circuit of harness.
4.CHECK HARNESS. 1) Disconnect the oscillator connector. 2) Using a tester, check the continuity between the antenna connector and the oscillator connector. Connector & terminal (D55) No. 9 — (D56) No. 1:	Is there continuity?		Repair or replace the open circuit of harness.
5.CHECK OSCILLATOR. 1) Replace with the passenger’s oscillator. (The bracket shape differs but the connector can be connected) 2) Check that it operates normally.	Does it operate properly?	Replace the oscillator.
6.CHECK FRONT LOCK BUTTON. 1) Replace with the passenger’s front outer handle. 2) Check that it operates normally.	Does it operate properly?	Replace the front outer handle.	Replace the collation CM.

4. CANNOT LOCK/UNLOCK WITH KEYLESS ACCESS FROM THE DRIVER’S DOOR

CAUTION:

• Check that there are no other registered access keys inside the vehicle.

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK DOOR LOCK SWITCH. Check that the lock/unlock operates with the driver’s door lock switch.	Does it lock/unlock normally?		Check the door lock circuit.
2.CHECK FUSE. Check fuse (FB-18 No. 7).	Is the fuse OK?		Replace the fuse.
3.CHECK OSCILLATOR. 1) Disconnect the oscillator connector. 2) Using a tester, measure the voltage between the oscillator connector and chassis ground. Connector & terminal (D55) No. 1 (+) — Chassis ground (−):	Is the voltage 10 V or more?		Repair or replace the open circuit of harness.
4.CHECK OSCILLATOR. Using a tester, check the continuity between the oscillator connector and chassis ground. Connector & terminal (D55) No. 7 — Chassis ground:	Is there continuity?		Repair or replace the open circuit of harness.
5.CHECK WIRING HARNESS. 1) Disconnect the collation CM connector and the oscillator connector. 2) Using a tester, check continuity between the oscillator connector and collation CM connector. Connector & terminal (D55) No. 10 — (B421) No. 33: (D55) No. 5 — (B421) No. 34:	Is there continuity?		Repair or replace the open circuit of harness.
6.CHECK WIRING HARNESS. 1) Disconnect the antenna connector and the oscillator connector. 2) Using a tester, check the continuity between the oscillator connector and the antenna connector. Connector & terminal (D55) No. 2 — (D56) No. 6: (D55) No. 3 — (D56) No. 5: (D55) No. 8 — (D56) No. 2: (D55) No. 9 — (D56) No. 1:	Is there continuity?		Repair or replace the open circuit of harness.
7.CHECK OSCILLATOR. 1) Replace with the passenger’s oscillator. (The bracket shape differs but the connector can be connected) 2) Check that it operates normally.	Is it operating normally?	Replace the oscillator.
8.CHECK FRONT LOCK BUTTON AND TOUCH SENSOR. 1) Replace with the passenger’s front outer handle. 2) Check that it operates normally.	Is it operating normally?	Replace the front outer handle.
9.CHECK SYSTEM CHECK. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the “System check”, select the «Driver’s exterior transmitter + interior tuner». 3) While in possession of the access key, stand 1 m or more away from the driver’s side door, then move approximately 0.8 m or closer.	Did the buzzer sound?		Replace the collation CM.
10.CHECK SYSTEM CHECK. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the “System check”, select the «Driver’s exterior transmitter + interior tuner». 3) Using a tester, measure the output (waveform) between the collation CM terminals. Connector & terminal (B421) No. 33 — No. 34:	When the system check was performed, did a change occur from waveform output to no waveform output?		Replace the collation CM.
11.CHECK ACCESS ANTENNA. 1) Replace the passenger’s seat access antenna, and the driver’s seat access antenna. 2) Check the operation of the keyless access system.	Does the keyless access system operate normally?	Replace the access antenna.	Replace the collation CM.

5. CANNOT UNLOCK WITH KEYLESS ACCESS FROM THE DRIVER’S DOOR

CAUTION:

• Check that there are no other registered access keys inside the vehicle.

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK DOOR LOCK SWITCH. Check that the lock/unlock operates with the driver’s door lock switch.	Does it lock/unlock normally?		Check the door lock circuit.
2.CHECK CURRENT DATA. 1) Display the current data «Driver’s seat lock status SW input» of body integrated unit using Subaru Select Monitor. 2) Read the data when locking/unlocking the driver’s side lock actuator.	Does the data change from ON/OFF?		Check the door lock switch circuit.
3.CHECK HARNESS. 1) Disconnect the collation CM connector and the oscillator connector. 2) Using a tester, check continuity between the collation CM connector and oscillator connector. Connector & terminal (B421) No. 5 — (D55) No. 4: (B421) No. 22 — (D55) No. 6:	Is there continuity?		Repair or replace the open circuit of harness.
4.CHECK HARNESS. 1) Disconnect the antenna connector. 2) Using a tester, check the continuity between the antenna connector and the oscillator connector. Connector & terminal (D55) No. 2 — (D56) No. 6:	Is there continuity?		Repair or replace the open circuit of harness.
5.CHECK OSCILLATOR. 1) Replace with the passenger’s oscillator. (The bracket shape differs but the connector can be connected) 2) Check that it operates normally.	Does it operate properly?	Replace the oscillator.
6.CHECK TOUCH SENSOR. 1) Replace with the passenger’s front outer handle. 2) Check that it operates normally.	Does it operate properly?	Replace the front outer handle.	Replace the collation CM.

6. CANNOT UNLOCK WITH KEYLESS ACCESS FROM THE PASSENGER’S DOOR

CAUTION:

• Check that there are no other registered access keys inside the vehicle.

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK DOOR LOCK SWITCH. Check that the lock/unlock operates with the driver’s door lock switch.	Does it lock/unlock normally?		Check the door lock circuit.
2.CHECK CURRENT DATA. 1) Display the current data «Passenger’s seat lock status SW input» of body integrated unit using Subaru Select Monitor. 2) Read the data when locking/unlocking the passenger’s side lock actuator.	Does the data change from ON/OFF?		Check the door lock switch circuit.
3.CHECK HARNESS. 1) Disconnect the collation CM connector and the oscillator connector. 2) Using a tester, check continuity between the collation CM connector and oscillator connector. Connector & terminal (B421) No. 6 — (D65) No. 4: (B421) No. 23 — (D65) No. 6:	Is there continuity?		Repair or replace the open circuit of harness.
4.CHECK HARNESS. 1) Disconnect the antenna connector. 2) Using a tester, check the continuity between the antenna connector and the oscillator connector. Connector & terminal (D65) No. 2 — (D66) No. 6:	Is there continuity?		Repair or replace the open circuit of harness.
5.CHECK OSCILLATOR. 1) Replace with the driver’s oscillator. (The bracket shape differs but the connector can be connected) 2) Check that it operates normally.	Does it operate properly?	Replace the oscillator.
6.CHECK TOUCH SENSOR. 1) Replace with the driver’s front outer handle. 2) Check that it operates normally.	Does it operate properly?	Replace the front outer handle.	Replace the collation CM.

7. CANNOT LOCK/UNLOCK WITH KEYLESS ACCESS FROM THE PASSENGER’S DOOR

CAUTION:

• Check that there are no other registered access keys inside the vehicle.

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK DOOR LOCK SWITCH. Check that the lock/unlock operates with the driver’s door lock switch.	Does it lock/unlock normally?		Check the door lock circuit.
2.CHECK FUSE. Check fuse (FB-18 No. 7).	Is the fuse OK?		Replace the fuse.
3.CHECK OSCILLATOR. 1) Disconnect the oscillator connector. 2) Using a tester, measure the voltage between the oscillator connector and chassis ground. Connector & terminal (D65) No. 1 (+) — Chassis ground (−):	Is the voltage 10 V or more?		Repair or replace the open circuit of harness.
4.CHECK OSCILLATOR. Using a tester, check the continuity between the oscillator connector and chassis ground. Connector & terminal (D65) No. 7 — Chassis ground:	Is there continuity?		Repair or replace the open circuit of harness.
5.CHECK WIRING HARNESS. 1) Disconnect the collation CM connector and the oscillator connector. 2) Using a tester, check continuity between the oscillator connector and collation CM connector. Connector & terminal (D65) No. 10 — (B421) No. 35: (D65) No. 5 — (B421) No. 36:	Is there continuity?		Repair or replace the open circuit of harness.
6.CHECK WIRING HARNESS. 1) Disconnect the antenna connector and the oscillator connector. 2) Using a tester, check the continuity between the oscillator connector and the antenna connector. Connector & terminal (D65) No. 2 — (D66) No. 6: (D65) No. 3 — (D66) No. 5: (D65) No. 8 — (D66) No. 2: (D65) No. 9 — (D66) No. 1:	Is there continuity?		Repair or replace the open circuit of harness.
7.CHECK OSCILLATOR. 1) Replace with the driver’s oscillator. (The bracket shape differs but the connector can be connected) 2) Check that it operates normally.	Is it operating normally?	Replace the oscillator.
8.CHECK FRONT LOCK BUTTON AND TOUCH SENSOR. 1) Replace with the driver’s front outer handle. 2) Check that it operates normally.	Is it operating normally?	Replace the front outer handle.
9.CHECK SYSTEM CHECK. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the “System check”, select the «Passenger’s exterior transmitter + interior tuner». 3) While in possession of the access key, stand 1 m or more away from the passenger’s side door, then move approximately 0.8 m or closer.	Did the outside buzzer sound?		Replace the collation CM.
10.CHECK SYSTEM CHECK. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the “System check”, select the «Passenger’s exterior transmitter + interior tuner». 3) Using a tester, measure the output (waveform) between the collation CM terminals. Connector & terminal (B421) No. 35 — No. 36:	When the system check was performed, did a change occur from waveform output to no waveform output?		Replace the collation CM.
11.CHECK ACCESS ANTENNA. 1) Replace the passenger’s seat access antenna, and the driver’s seat access antenna. 2) Check the operation of the keyless access system.	Does the keyless access system operate normally?	Replace the access antenna.	Replace the collation CM.

8. CANNOT LOCK WITH KEYLESS ACCESS FROM THE PASSENGER’S DOOR

CAUTION:

• Check that there are no other registered access keys inside the vehicle.

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK DOOR LOCK SWITCH. Check that the lock/unlock operates with the driver’s door lock switch.	Does it lock/unlock normally?		Check the door lock circuit.
2.CHECK CURRENT DATA. 1) Display the current data «Passenger’s seat lock status SW input» of body integrated unit using Subaru Select Monitor. 2) Read the data when locking/unlocking the passenger’s side lock actuator.	Does the data change from ON/OFF?		Check the door lock switch circuit.
3.CHECK HARNESS. 1) Disconnect the collation CM connector and antenna connector. 2) Using a tester, check continuity between the collation CM connector and antenna connector. Connector & terminal (B421) No. 4 — (D66) No. 3:	Is there continuity?		Repair or replace the open circuit of harness.
4.CHECK HARNESS. 1) Disconnect the oscillator connector. 2) Using a tester, check the continuity between the antenna connector and the oscillator connector. Connector & terminal (D65) No. 9 — (D66) No. 1:	Is there continuity?		Repair or replace the open circuit of harness.
5.CHECK OSCILLATOR. 1) Replace with the driver’s oscillator. (The bracket shape differs but the connector can be connected) 2) Check that it operates normally.	Does it operate properly?	Replace the oscillator.
6.CHECK FRONT LOCK BUTTON. 1) Replace with the driver’s front outer handle. 2) Check that it operates normally.	Does it operate properly?	Replace the front outer handle.	Replace the collation CM.

9. TRUNK DOES NOT OPEN WITH THE TRUNK OPENER BUTTON

CAUTION:

• Check that there are no other registered access keys inside the trunk.

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK TRUNK OPENER. Check that the trunk opens with the driver’s seat trunk opener.	Does it open normally?		Inspect the trunk opener.
2.CHECK KEYLESS OPERATION. Check that the trunk opens when the trunk opener button of the access key is operated.	Does it open normally?
3.CHECK TRUNK LOCK OPERATION. 1) Using the Subaru Select Monitor, select the function check «R gate/trunk UNLK output» of the body integrated unit. 2) Check that the trunk opens when the R gate/trunk UNLK signal is output.	Does it open normally?		Check the trunk lock actuator circuit.
4.CHECK ACCESS KEY. Check the access key LED when the trunk opener button of the access key is operated.	Does the access key LED illuminate?		Replace the access key.
5.CHECK ACCESS KEY. 1) Prepare all access keys registered to the vehicle. 2) Check that the trunk opens with each access key.	Does it open normally?		Replace the access key.
6.CHECK CURRENT DATA. 1) Display the current data «Trunk Request SW» of the collation CM using the Subaru Select Monitor. 2) Read the data when pressing the trunk opener button.	Does the data display ON?
7.CHECK WIRING HARNESS. 1) Disconnect the trunk opener button connector and the collation CM connector. 2) Using a tester, check continuity between the trunk opener button connector and collation CM connector. Connector & terminal (R294) No. 1 — (B421) No. 7:	Is there continuity?		Repair or replace the open circuit of harness.
8.CHECK WIRING HARNESS. 1) Using a tester, check the continuity between the trunk opener button connector and chassis ground. Connector & terminal (R294) No. 2 — Chassis ground:	Is there continuity?		Repair or replace the open circuit of harness.
9.CHECK TRUNK OPENER BUTTON. Using a tester, check the continuity between trunk opener button connector terminals. Connector & terminal (R294) No. 2 — No. 1:	Is there continuity when pressing the switch?		Replace the trunk opener button.
10.CHECK WIRING HARNESS. 1) Disconnect the outside rear antenna connector and the collation CM connector. 2) Using a tester, check continuity between the outside rear antenna connector and collation CM connector. Connector & terminal (R299) No. 1 — (B421) No. 31: (R299) No. 2 — (B421) No. 32:	Is there continuity?		Repair or replace the open circuit of harness.
11.CHECK OUTSIDE REAR ANTENNA. Replace the outside rear antenna with new or properly working parts.	Does it operate properly?	Replace the outside rear antenna.
12.CHECK SYSTEM CHECK. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the “System check”, select the «Trunk external transmitter + interior tuner». 3) Hold the access key 1 m or more away from the trunk, then come closer to within 0.8 m.	Does the outside buzzer sound?	System is normal.	Replace the collation CM.

10. ACCESS KEY LOCKOUT PROTECTION FUNCTION IN THE TRUNK DOES NOT OPERATE

CAUTION:

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK TRUNK OPENER. Check that the trunk opens with the driver’s seat trunk opener.	Does it open normally?		Inspect the trunk opener.
2.CHECK KEYLESS OPERATION. Check that the trunk opens when the trunk opener button of the access key is operated.	Does it open normally?
3.CHECK TRUNK LOCK OPERATION. 1) Using the Subaru Select Monitor, select the function check «R gate/trunk UNLK output» of the body integrated unit. 2) Check that the trunk opens when the R gate/trunk UNLK signal is output.	Does it open normally?		Check the trunk lock actuator circuit.
4.CHECK ACCESS KEY. 1) Prepare all access keys registered to the vehicle. 2) Check that the trunk opens with each access key.	Does it open normally?		Replace the access key.
5.CHECK WIRING HARNESS. 1) Disconnect the passenger room rear antenna connector and the collation CM connector. 2) Using a tester, check continuity between the passenger room rear antenna connector and chassis ground. Connector & terminal (R297) No. 1 — (B421) No. 15: (R297) No. 3 — (B421) No. 16:	Is there continuity?		Repair or replace the open circuit of harness.
6.CHECK PASSENGER ROOM REAR ANTENNA. Replace the passenger room rear antenna with a new or properly functioning part.	Does it operate properly?	Replace the passenger room rear antenna.
7.CHECK RECEIVER. Replace the receiver with a new or properly functioning part.	Does it operate properly?	Replace the receiver.
8.CHECK WIRING HARNESS. 1) Disconnect the receiver connector and the collation CM connector. 2) Using a tester, check continuity between the receiver connector and collation CM connector. Connector & terminal (R296) No. 4 — (B421) No. 29: (R296) No. 5 — (B421) No. 38: (R296) No. 2 — (B421) No. 39:	Is there continuity?		Repair or replace the open circuit of harness.
9.CHECK SYSTEM CHECK. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the “System check”, select the «Trunk internal transmitter + interior tuner». 3) Hold the access key 1 m or more away from the center of inside the trunk, then come closer to within 0.8 m.	Does the outside buzzer sound?	System is normal.	Replace the collation CM.

11. THE KEYLESS ACCESS PASSENGER ROOM BUZZER DOES NOT SOUND

CAUTION:

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK COMBINATION METER. Perform the self-diagnosis of combination meter.	Is the self diagnosis normal?	Replace the collation CM.	Replace the combination meter.

12. INTERNAL COLLATION DOES NOT FUNCTION

CAUTION:

When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK INTERIOR ANTENNA. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the “System check”, select the «Front interior transmitter + interior tuner». 3) Using a tester, check the output between collation CM connector terminals while performing system check. Connector & terminal (B421) No. 11 — No. 12:	Is a pulse output?		Replace the collation CM.
2.CHECK INTERIOR ANTENNA. NOTE: For 5 door model, go to step 3. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the “System check”, select the «Rear interior transmitter + interior tuner». 3) Using a tester, check the output between collation CM connector terminals while performing system check. Connector & terminal (B421) No. 13 — No. 14:	Is a pulse output?		Replace the collation CM.
3.CHECK INTERIOR ANTENNA. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the system check, select «Trunk internal transmitter + interior tuner», or «Rear gate internal transmitter + interior tuner». 3) Using a tester, check the output between collation CM connector terminals while performing system check. Connector & terminal (B421) No. 15 — No. 16:	Is a pulse output?		Replace the collation CM.
4.CHECK WIRING HARNESS. 1) Disconnect the front interior antenna connector and the collation CM connector. 2) Using a tester, check continuity between the front interior antenna connector and the collation CM connector. Connector & terminal (i25) No. 1 — (B421) No. 11: (i25) No. 3 — (B421) No. 12:	Is there continuity?		Repair or replace the open circuit of harness.
5.CHECK WIRING HARNESS. NOTE: For 5 door model, go to step 6. 1) Disconnect the center passenger interior antenna connector and the collation CM connector. 2) Using a tester, check continuity between the center interior antenna connector and the collation CM connector. Connector & terminal (R298) No. 1 — (B421) No. 13: (R298) No. 3 — (B421) No. 14:	Is there continuity?		Repair or replace the open circuit of harness.
6.CHECK WIRING HARNESS. 1) Disconnect the rear interior antenna connector and the collation CM connector. 2) Using a tester, check continuity between the rear interior antenna connector and the collation CM connector. Connector & terminal 4 door model (R297) No. 1 — (B421) No. 15: (R297) No. 3 — (B421) No. 16: 5 door model (R298) No. 1 — (B421) No. 15: (R298) No. 3 — (B421) No. 16:	Is there continuity?		Repair or replace the open circuit of harness.
7.CHECK ANTENNA. Replace the front interior antenna with a new or properly functioning part.	Does it operate properly?	Replace the front interior antenna.
8.CHECK ANTENNA. NOTE: For 5 door model, go to step 9. Replace the center passenger room antenna with a new or properly functioning part.	Does it operate properly?	Replace the center interior antenna.
9.CHECK ANTENNA. Replace the rear interior antenna with a new or properly functioning part.	Does it operate properly?	Replace the rear interior antenna.
10.CHECK RECEIVER. Replace the receiver with a new or properly functioning part.	Does it operate properly?	Replace the receiver.
11.CHECK WIRING HARNESS. 1) Disconnect the receiver connector and the collation CM connector. 2) Using a tester, check continuity between the receiver connector and collation CM connector. Connector & terminal (R296) No. 4 — (B421) No. 29: (R296) No. 5 — (B421) No. 38: (R296) No. 2 — (B421) No. 39:	Is there continuity?		Repair or replace the open circuit of harness.
12.CHECK SYSTEM CHECK. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the “System check”, select the «Front interior transmitter + interior tuner». 3) Hold the access key 1 m or more away from the audio panel, then come closer to within 0.8 m.	Does the buzzer sound?		Replace the collation CM.
13.CHECK SYSTEM CHECK. NOTE: For 5 door model, go to step 14. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the “System check”, select the «Rear interior transmitter + interior tuner». 3) Hold the access key 1 m or more away from the center of the second row seats, then come closer to within 0.8 m.	Does the buzzer sound?		Replace the collation CM.
14.CHECK SYSTEM CHECK. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the system check, select «Trunk internal transmitter + interior tuner», or «Rear gate internal transmitter + interior tuner». 3) Hold the access key 1 m or more away from the back of the rear seat, then come closer to within 0.8 m.	Does the buzzer sound?	System is normal.	Replace the collation CM.

13. CAN NOT LOCK WHEN USING THE REAR LOCK BUTTON

CAUTION:

• Check that there are no other registered access keys inside the vehicle.

• Inspect LAN system or keyless access system according to the basic diagnostic procedure, and make sure that DTC is not input.

• When the access key, body integrated unit or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK REAR LOCK BUTTON. 1) Display the «Rear Gate Request SW» of the collation CM using the Subaru Select Monitor. 2) Read the data when operating the rear lock button.	Does the data change between ON/OFF?
2.CHECK HARNESS. 1) Disconnect the rear lock button connector and the collation CM connector. 2) Using a tester, measure the resistance between harness. Connector & terminal (D99) No. 3 — (B421) No. 7:	Is the resistance less than 10 Ω?		Repair or replace the open circuit of the harness.
3.CHECK HARNESS. Using a tester, measure the resistance between harness and chassis ground. Connector & terminal (D99) No. 3 — Chassis ground:	Is the resistance less than 10 Ω?		Repair or replace the short of harness.
4.CHECK HARNESS. Using a tester, measure the resistance between harness and chassis ground. Connector & terminal (D99) No. 4 — Chassis ground:	Is the resistance less than 10 Ω?		Repair or replace the open circuit of the harness.
5.CHECK REAR LOCK BUTTON. Measure the resistance when the rear lock button is operated using the tester. Connector & terminal (D99) No. 3 — No. 4:	Did the resistance change from 1 MΩ or more to less than 10 Ω?		Replace the rear lock button.
6.CHECK REAR GATE LOCK OPERATION. 1) Connect the disconnected connectors. 2) Using the Subaru Select Monitor, select the function check «lock actuat. LOCK output» of the body integrated unit. 3) Check that the lock operates when the «lock actuat. LOCK output» is output.	Does it operate properly?	It is possible that temporary poor communication occurs.
7.CHECK REAR GATE LOCK ACTUATOR. Perform individual inspection of the rear gate lock actuator.	Is the rear gate lock actuator normal?	Check the rear gate lock actuator circuit.	Replace the rear gate latch assembly.

14. REAR GATE CANNOT BE UNLOCKED WITH THE REAR GATE OPENER BUTTON

CAUTION:

• Check that there are no other registered access keys inside the rear gate.

• Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.

• Check that the keyless access function is not stopped.

• When the access key or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK KEYLESS OPERATION. Check that the rear gate unlocks when the rear gate unlock button of the access key is pressed.	Does it operate properly?
2.CHECK REAR GATE LOCK OPERATION. 1) Using the Subaru Select Monitor, select the function check «R gate/trunk UNLK output» of the body integrated unit. 2) Check that the rear gate unlocks when the R gate/trunk UNLK signal is output.	Does it operate properly?		Check the rear gate lock actuator circuit.
3.CHECK ACCESS KEY. 1) Prepare all access keys registered to the vehicle. 2) Check that the rear gate lock can be unlocked with each access key.	Does it operate properly?		Replace the access key.
4.CHECK CURRENT DATA. 1) Display the current data «R Gate Release SW input» of body integrated unit using Subaru Select Monitor. 2) Read the data when pressing the rear gate opener button.	Does the data display ON?
5.CHECK WIRING HARNESS. 1) Disconnect the rear gate opener button connector and the collation CM connector. 2) Using a tester, check continuity between the rear gate opener button connector and collation CM connector. Connector & terminal (D99) No. 1 — (B281) No. 24:	Is there continuity?		Repair or replace the open circuit of harness.
6.CHECK WIRING HARNESS. Using a tester, check the continuity between the rear gate opener button connector and chassis ground. Connector & terminal (D99) No. 2 — Chassis ground:	Is there continuity?		Repair or replace the open circuit of harness.
7.CHECK REAR GATE OPENER BUTTON. Using a tester, check the continuity between rear gate opener button switch terminals. Connector & terminal (D99) No. 1 — No. 2:	Is there continuity when pressing the switch?		Replace the rear gate opener button.
8.CHECK WIRING HARNESS. 1) Disconnect the outside rear antenna connector and the collation CM connector. 2) Using a tester, check continuity between the outside rear antenna connector and collation CM connector. Connector & terminal (R299) No. 1 — (B421) No. 31: (R299) No. 2 — (B421) No. 32:	Is there continuity?		Repair or replace the open circuit of harness.
9.CHECK OUTSIDE REAR ANTENNA. Replace the outside rear antenna with new or properly working parts.	Does it operate properly?		Replace the collation CM.
10.CHECK CURRENT DATA. 1) Display the current data «R gate lock status SW input» of body integrated unit using Subaru Select Monitor. 2) Read the data when locking/unlocking the rear gate lock actuator.	Does the data change to ON ←→ OFF?		Replace the body integrated unit.
11.CHECK SYSTEM CHECK. 1) Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, select the «System check». 2) From the “System check”, select the «Rear gate external transmitter + interior tuner». 3) Hold the access key 1 m or more away from the rear gate, then come closer to within 0.8 m.	Does the outside buzzer sound?	System is normal.	Replace the collation CM.

15. THE STEERING LOCK IS NOT RELEASED

CAUTION:

When the steering lock CM or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK OPERATION. 1) Depress the brake pedal (AT model) or clutch pedal (MT model). 2) While turning the steering wheel lightly to the left and right, press the push button ignition switch. 3) Confirm that the steering lock is released and the engine start.	Does the engine fail to start with the steering lock released?
2.CHECK DTC. Read power supply CM DTCs using the Subaru Select Monitor.	Is a DTC displayed?	Perform the diagnosis according to the corresponding procedures of DTC.
3.CHECK DTC. Read collation CM DTCs using the Subaru Select Monitor.	Is a DTC displayed?	Perform the diagnosis according to the corresponding procedures of DTC.
4.CHECK CURRENT DATA. 1) Using the Subaru Select Monitor, display the current data of the collation CM «Steering lock/unlock request reception status» and «Steering lock/unlock command reception history». 2) Read the data when the push button ignition switch is pressed while in possession of the access key. (Maintain for 10 seconds after switch operation)	Does the data change from «Not yet received» to «Reception», and from «OFF» to «ON»?
5.CHECK STEERING LOCK CM. 1) Disconnect the steering lock CM connector. 2) Using a tester, measure the voltage between the steering lock CM connector and chassis ground. Connector & terminal (B424) No. 7 (+) — Chassis ground (−):	Is the voltage 10 V or more?		Repair or replace the open circuit of harness.
6.CHECK STEERING LOCK CM. Using a tester, check continuity between the steering lock CM connector and chassis ground. Connector & terminal (B424) No. 1 — Chassis ground: (B424) No. 2 — Chassis ground:	Is there continuity?		Repair or replace the open circuit of harness.
7.CHECK STEERING LOCK CM. Using a tester, measure the voltage between steering lock CM terminals right after the ignition switch is turned to ON. Connector & terminal (B424) No. 3 (+) — No. 2 (−):	Is the voltage 1 V or less right after the ignition ON?	Replace the steering lock CM.	Repair or replace the open circuit of harness.
8.CHECK CURRENT DATA. Using the Subaru Select Monitor, display the current data of the collation CM «Code collation result between collated ECM and ID code box».	Is data displayed as being normal?
9.CHECK CURRENT DATA. 1) Replace with a properly functioning or new ID code box. 2) Using the Subaru Select Monitor, display the current data of the collation CM «Code collation result between collated ECM and ID code box».	Is data displayed as being normal?	System is normal.	Replace the collation CM.
10.CHECK CURRENT DATA. Using the Subaru Select Monitor, display the current data of the collation CM «Code collation result between steering locked ECM and ID code box».	Is data displayed as being normal?	System is normal.
11.CHECK ID CODE BOX. 1) Replace with a properly functioning or new ID code box. 2) Using the Subaru Select Monitor, display the current data of the collation CM «Code collation result between steering locked ECM and ID code box».	Is data displayed as being normal?	System is normal.
12.CHECK STEERING LOCK CM. 1) Replace with a properly functioning or new steering lock CM. 2) After registering, the steering lock operates when the ignition is turned to OFF and the driver’s door is opened and closed. 3) Turn the ignition to ON. 4) Operate the steering and check for whether the steering lock is released.	Is the steering lock released, and does the engine start?	Replace the steering lock CM.	Replace the collation CM.

16. THE STEERING LOCK DOES NOT OPERATE

CAUTION:

When the steering lock CM or collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

STEP	CHECK	YES	NO
1.CHECK DTC. Read power supply CM DTCs using the Subaru Select Monitor.	Is a DTC displayed?	Perform the diagnosis according to the corresponding procedures of DTC.
2.CHECK DTC. Read collation CM DTCs using the Subaru Select Monitor.	Is a DTC displayed?	Perform the diagnosis according to the corresponding procedures of DTC.
3.CHECK CURRENT DATA. 1) Display the current data «Driver’s door SW input» of body integrated unit using Subaru Select Monitor. 2) Read the data when opening and closing the driver’s door.	Does the data change from ON to OFF according to the opening and closing?		Inspect door switch circuit.
4.CHECK CURRENT DATA. 1) Using the Subaru Select Monitor, display the current data of the collation CM «Steering lock/unlock command reception history». 2) While in possession of the access key, perform engine start operations, and read data within 10 seconds after starting.	Is data displayed as being received?		Replace the collation CM.
5.CHECK STEERING LOCK CM. Using a tester, measure the waveform between steering lock CM terminals immediately after the following operations. Perform ignition ON, driver’s side door close, shift lever P range, ignition OFF, and close → open the driver’s side door. Connector & terminal (B424) No. 3 — No. 2:	Is the waveform immediately after opening the driver’s side door abnormal?	Replace the steering lock CM.
6.CHECK WIRING HARNESS. 1) Disconnect the power supply CM connector and the steering lock CM connector. 2) Using a tester, check continuity between the power supply CM connector and steering lock CM connector. Connector & terminal (B424) No. 3 — (B420) No. 32:	Is there continuity?		Repair or replace the open circuit of harness.
7.CHECK WIRING HARNESS. Using a tester, check continuity between the power supply CM connector and chassis ground. Connector & terminal (B420) No. 6 — Chassis ground: (B420) No. 40 — Chassis ground:	Is there continuity?	Repair or replace the short circuit of the harness.	Replace the power supply CM.

17. KEYLESS ACCESS EXTERNAL BUZZER DOES NOT BEEP

STEP	CHECK	YES	NO
1.CHECK BUZZER OPERATION. Use the Subaru Select Monitor to perform the body integrated unit function check «Keyless Buzzer Output».	Does the buzzer sound?		Check the buzzer circuit.
2.CHECK KEYLESS ACCESS SYSTEM CHECK. Using the Subaru Select Monitor, from the “Keyless access system check of collation CM”, perform the «System check».	Does the buzzer sound in each mode?	Currently, system is normal.	Check the buzzer circuit.

18. POWER WILL NOT TURN ON (BOTH ACCESSORY AND IGNITION)

CAUTION:

• When the power supply CM is replaced with a new unit, and the battery ground terminal is connected, it will become ignition ON. Also, if the battery is disconnected, it will resume to a condition with the battery cut off.

• When the collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

WIRING DIAGRAM:

STEP	CHECK	YES	NO
1.CHECK FUSE. Check the fuse (SBF-6).	Is the fuse OK?		Replace the fuse.
2.CHECK POWER SUPPLY. 1) Remove IG relay 1 (push button start), IG relay 2 (push button start) and accessory relay (push button start). 2) Using a tester, measure the voltage between the relay block connector and chassis ground.	Is the voltage 10 V or more?		Check the DC power supply circuit.
3.CHECK CONNECTOR. Check the engagement of each connector and for any deformation or looseness.	Are the connectors and terminals normal?		Repair the connector, or replace harness.
4.CHECK WIRING HARNESS. 1) Disconnect the power supply CM connector. 2) Using a tester, measure the voltage between the power supply CM connector and chassis ground. Connector & terminal (B420) No. 12 (+) — Chassis ground (−): (B420) No. 33 (+) — Chassis ground (−):	Is the voltage between 8 V and 16 V?		Repair or replace the open circuit of harness.
5.CHECK WIRING HARNESS. Using a tester, check continuity between the power supply CM connector and chassis ground. Connector & terminal (B420) No. 6 — Chassis ground: (B420) No. 40 — Chassis ground:	Is there continuity?		Replace the collation CM.
6.CHECK DTC. 1) Connect the power supply CM connector. 2) Carrying the access key, depress the brake pedal (AT model) or clutch pedal (MT model), and push the push button ignition switch. 3) Read power supply CM DTCs using the Subaru Select Monitor.	Is the key collation error being output?		Perform diagnosis according to the DTC.
7.CHECK CURRENT DATA. 1) Using the Subaru Select Monitor, display the current data «Push start SW1» and «Push start SW2» of the power supply CM. 2) Read the data when pressing the push button ignition switch.	Does it change from OFF to ON along with the operation?
8.CHECK IG RELAY 1 AND 2 (PUSH BUTTON START). Check IG relay 1, 2 (Push button start).	Is IG relay 1, 2 (Push button start) normal?		Replace the faulty relay.
9.CHECK WIRING HARNESS. 1) Disconnect power supply CM connector, IG relay 1 (push button start), IG relay 2 (push button start) and accessory relay (push button start). 2) Using a tester, check continuity between terminals of power supply CM connector, IG relay 1 (push button start), IG relay 2 (push button start) and accessory relay (push button start). Connector & terminal (B420) No. 35 — (B425) No. 38: (B420) No. 34 — (B425) No. 34: (B420) No. 11 — (B426) No. 4:	Is there continuity?		Repair or replace the open circuit of harness.
10.CHECK WIRING HARNESS. Using a tester, check continuity between the power supply CM connector and chassis ground. Connector & terminal (B420) No. 35 — Chassis ground: (B420) No. 34 — Chassis ground: (B420) No. 11 — Chassis ground:	Is there no continuity?		Repair or replace the short circuit of the harness.
11.CHECK WIRING HARNESS. Using a tester, check the continuity between the IG relay 2 (push button start) connector and chassis ground. Connector & terminal (B425) No. 39 — Chassis ground:	Is there continuity?		Repair or replace the open circuit of harness.
12.CHECK WIRING HARNESS. Using a tester, check the continuity between the IG relay 1 connector and chassis ground. Connector & terminal (B425) No. 35 — Chassis ground:	Is there continuity?		Repair or replace the short circuit of the harness.
13.CHECK WIRING HARNESS. Using a tester, check the continuity between the accessory relay connector and chassis ground. Connector & terminal (B426) No. 1 — Chassis ground:	Is there continuity?		Repair or replace the short circuit of the harness.
14.CHECK POWER SUPPLY CM. 1) Connect all the disconnected connectors. 2) Using a tester, measure the voltage between the power supply CM connector and chassis ground when the ignition is turned from OFF to ON. Connector & terminal (B420) No. 11 (+) — Chassis ground (−): (B420) No. 34 (+) — Chassis ground (−): (B420) No. 35 (+) — Chassis ground (−):	Does the voltage change from less than 1 V to +B-2 V or more?		Replace the power supply CM.
15.CHECK PUSH BUTTON IGNITION SWITCH. 1) Disconnect the push button ignition switch. 2) Using a tester, check the continuity between terminals. Connector & terminal (B423) No. 7 — No. 5: (B423) No. 2 — No. 5:	When the button was pressed, did it change to continuity exists? (No continuity when button is released)		Replace the push button ignition switch.
16.CHECK WIRING HARNESS. 1) Disconnect the push button ignition switch. 2) Using a tester, check the continuity between the push button ignition switch connector and chassis ground. Connector & terminal (B423) No. 4 — Chassis ground: (B423) No. 5 — Chassis ground:	Is there continuity?		Repair or replace the open circuit of harness.
17.CHECK WIRING HARNESS. 1) Disconnect the power supply CM connector and the push button ignition switch. 2) Using a tester, check continuity between the power supply CM connector and push button ignition switch. Connector & terminal (B423) No. 7 — (B420) No. 14: (B423) No. 2 — (B420) No. 37:	Is there continuity?	System is normal.	Repair or replace the open circuit of harness.

19. POWER WILL NOT TURN ON (ACCESSORY DOES NOT TURN ON, BUT IGNITION TURNS ON)

CAUTION:

• When the collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

WIRING DIAGRAM:

STEP	CHECK	YES	NO
1.CHECK FUSE. Check the fuse (SBF-6 and FB-18).	Is the fuse OK?		Replace the fuse.
2.CHECK CONNECTOR. Check the engagement of each connector and for any deformation or looseness.	Are the connectors and terminals normal?		Repair the connector, or replace harness.
3.CHECK WIRING HARNESS. 1) Disconnect the power supply CM connector. 2) Using a tester, measure the voltage between the power supply CM connector and chassis ground. Connector & terminal (B420) No. 12 (+) — Chassis ground (−): (B420) No. 33 (+) — Chassis ground (−):	Is the voltage between 8 V and 16 V?		Repair or replace the open circuit of harness.
4.CHECK WIRING HARNESS. Using a tester, check continuity between the power supply CM connector and chassis ground. Connector & terminal (B420) No. 6 — Chassis ground: (B420) No. 40 — Chassis ground:	Is there continuity?		Replace the collation CM.
5.CHECK ACCESSORY RELAY (PUSH BUTTON START). Check the accessory relay (push button start).	Is the relay OK?		Replace the relay.
6.CHECK WIRING HARNESS. 1) Disconnect the power supply CM connector and the accessory relay (push button start). 2) Using a tester, check continuity between the power supply CM connector and accessory relay (push button start). Connector & terminal (B420) No. 11 — (B426) No. 4:	Is there continuity?		Repair or replace the open circuit of harness.
7.CHECK WIRING HARNESS. 1) Connect the power supply CM connector. 2) Using a tester, check continuity between the power supply CM connector and chassis ground when the ignition switch is turned from OFF to ON. Connector & terminal (B420) No. 11 — Chassis ground:	Is there continuity?	Repair or replace the short circuit of the harness.
8.CHECK POWER SUPPLY CM. 1) Connect the power supply CM connector. 2) Using a tester, measure the voltage between the power supply CM connector and chassis ground when the ignition is turned from OFF to ON. Connector & terminal (B420) No. 11 (+) — Chassis ground (−):	Did the voltage change from 1 V or less →+ B-2 V or more?	System is normal.	Replace the power supply CM.

20. POWER WILL NOT TURN ON (ACCESSORY TURNS ON, BUT IGNITION DOES NOT TURN ON)

CAUTION:

• When the collation CM is replaced, registration of the immobilizer is required. For procedures, refer to the “PC application help for Subaru Select Monitor”.

WIRING DIAGRAM:

STEP	CHECK	YES	NO
1.CHECK FUSE. Check the fuse (SBF-6 and FB-18).	Is the fuse OK?		Replace the fuse.
2.CHECK CONNECTOR. Check the engagement of each connector and for any deformation or looseness.	Are the connectors and terminals normal?		Repair the connector, or replace harness.
3.CHECK WIRING HARNESS. 1) Disconnect the power supply CM connector. 2) Using a tester, measure the voltage between the power supply CM connector and chassis ground. Connector & terminal (B420) No. 12 (+) — Chassis ground (−): (B420) No. 33 (+) — Chassis ground (−):	Is the voltage between 8 V and 16 V?		Repair or replace the open circuit of harness.
4.CHECK WIRING HARNESS. Using a tester, check continuity between the power supply CM connector and chassis ground. Connector & terminal (B420) No. 6 — Chassis ground: (B420) No. 40 — Chassis ground:	Is there continuity?		Replace the collation CM.
5.CHECK IG RELAY 1 AND 2 (PUSH BUTTON START). Check IG relay 1 (push button start) and IG relay 2 (push button start).	Is the relay OK?		Replace the relay.
6.CHECK WIRING HARNESS. 1) Disconnect the power supply CM connector and the IG relay 1 and 2 (push button start). 2) Using a tester, check continuity between power supply CM connector and IG relay 1 (push button start) or IG relay 2 (push button start). Connector & terminal (B420) No. 35 — (B425) No. 38: (B420) No. 34 — (B425) No. 34:	Is there continuity?		Repair or replace the open circuit of harness.
7.CHECK WIRING HARNESS. Using a tester, check continuity between the power supply CM connector and chassis ground. Connector & terminal (B420) No. 35 — Chassis ground: (B420) No. 34 — Chassis ground:	Is there continuity?	Repair or replace the short circuit of the harness.
8.CHECK POWER SUPPLY CM. 1) Connect the power supply CM connector. 2) Using a tester, measure the voltage between the power supply CM connector and chassis ground when the ignition is turned from OFF to ON. Connector & terminal (B420) No. 34 (+) — Chassis ground (−): (B420) No. 35 (+) — Chassis ground (−):	Did the voltage change from 1 V or less →+ B-2 V or more?	System is normal.	Replace the power supply CM.

21. ENGINE DOES NOT START

CAUTION:

When the power supply CM is replaced with a new unit, and the battery ground terminal is connected, it will become ignition ON. Also, if the battery is disconnected, it will resume to a condition with the battery cut off.

STEP	CHECK	YES	NO
1.INITIALIZE STEERING LOCK. 1) Shift the shift lever to parking for AT model, neutral for MT model. 2) Operate the driver’s door switch ON/OFF with the ignition switch OFF. 3) Wait for 10 seconds.	Can the engine start?	System is normal.
2.CHECK DTC. Read the DTC of the keyless access system using Subaru Select Monitor.	Is DTC detected?	Perform the diagnosis according to the DTC.
3.CHECK POWER SUPPLY SWITCHING. 1) Place the access key on the driver’s seat. 2) Push the push button ignition switch without depressing the brake pedal or clutch pedal.	When the switch is operated, does the <IG-OFF> → <ACC-ON> → <IG-ON> → <IG-OFF> change occur?		Perform the diagnostics according to the symptom for power supply switching system in General Diagnostic Table.
4.CHECK CURRENT DATA. 1) Place the access key on the driver’s seat. 2) With depressing the brake pedal (AT model) or clutch pedal (MT model), push the push button ignition switch. 3) Using the Subaru Select Monitor, confirm the power supply CM, the current data «STSW signal monitor» when pressing the push button ignition switch. NOTE: If it is difficult to confirm, press the push button ignition switch for approximately five seconds longer.	Does the data change from OFF → ON?		(AT model) (MT model)
5.CHECK CURRENT DATA. Check the power supply CM, current data «Shift P Signal» using the Subaru Select Monitor.	Is ON displayed in parking position, and OFF displayed in other positions?
6.CHECK CURRENT DATA. Confirm the power supply CM, current data «Stop Light Switch» using the Subaru Select Monitor.	Is ON displayed when brake pedal depressed, and OFF displayed when brake pedal not depressed?
7.CHECK CURRENT DATA. Confirm the power supply CM, current data «Neutral SW/Clutch SW» using the Subaru Select Monitor.	AT model: is ON displayed in parking and neutral position and OFF displayed in other positions? MT model: is ON displayed when clutch pedal depressed and OFF displayed when clutch pedal not displayed?
8.CHECK STEERING LOCK. Operate the push button ignition switch to perform the power supply switching and check steering lock condition during ACC-ON condition.	Is steering lock UNLOCK condition?		Perform the diagnostics according to the symptom for steering lock system in General Diagnostic Table.
9.CHECK POWER SUPPLY CM. 1) Turn the ignition switch to OFF. 2) Disconnect the ECM connector. 3) Use a tester to measure the battery voltage in following procedures. (1) Press the push button ignition switch with the brake pedal depressed (MT model: clutch pedal depressed). (Measure within 10 seconds.) (2) Release the push button ignition switch from the condition of step 1. above. Connector & terminal (B420) No. 39 (+) — Chassis ground (−):	Does the value change from 1 V or less to +B-2 V or more in the step 1., and return to 1 V or less in the step 2.?	Perform fault diagnosis for the engine system.	Replace the power supply CM.
10.CHECK CURRENT DATA. 1) Connect the disconnected connectors. 2) Confirm the collation CM, current data «Engine start permission request reception status» using the Subaru Select Monitor.	Is “Reception” displayed with ignition switch ON, and “Not yet received” displayed in other positions?
11.CHECK ID CODE BOX. 1) Turn the ignition switch to OFF. 2) Replace with a new ID code box. 3) Register the ID code box. NOTE: For the registration procedures, refer to the “PC application help for Subaru Select Monitor”.	Can the engine start?	There was a malfunction in the ID code box.	Perform fault diagnosis for the engine system.
12.CHECK P RANGE SWITCH. 1) Turn the ignition switch to OFF. 2) Disconnect the AT shift lever connector. 3) Using a tester, check the continuity of P range switch. Connector & terminal (B117) No. 1 — 2:	Does it change from Continuity ⇔ No continuity according to shift lever operation?		Replace the P range switch.
13.CHECK HARNESS. 1) Turn the ignition switch to OFF. 2) Disconnect the power supply CM connector. 3) Using a tester, check continuity between the power supply CM and AT select lever. Connector & terminal (B117) No. 1 — (B420) No. 5: (B117) No. 2 — Chassis ground:	Is there continuity?	Replace the power supply CM.	Repair or replace the harness.
14.CHECK STOP LIGHT SWITCH. 1) Turn the ignition switch to OFF. 2) Disconnect the stop light switch connector. 3) Using a tester, check the continuity of the stop light switch. Connector & terminal 5 door model (B65) No. 1 — No. 2: 4 door model (B65) No. 3 — No. 4:	Does it change from Continuity ⇔ No continuity according to brake pedal operation?		Replace the stop light switch.
15.CHECK HARNESS. 1) Turn the ignition switch to OFF. 2) Using a tester, check continuity between the power supply CM and stop light switch. Connector & terminal 5 door model (B420) No. 1 — (B65) No. 2: (B65) No. 1 — F/B fuse No. 8: 4 door model (B420) No. 1 — (B65) No. 4: (B65) No. 3 — F/B fuse No. 8:	Is there continuity?	Replace the power supply CM.	Repair or replace the harness.
16.CHECK INHIBITOR SWITCH. NOTE: For MT model, go to next. Check the inhibitor switch.	Is the inhibitor switch working normal?		Replace the inhibitor switch.
17.CHECK CLUTCH SWITCH. Check the clutch switch.	Is clutch switch OK?		Replace the clutch switch.
18.CHECK HARNESS. 1) Turn the ignition switch to OFF. 2) Disconnect the inhibitor switch connector. 3) Using a tester, check continuity between the power supply CM connector and inhibitor switch connector. Connector & terminal (B420) No. 17 — (B12) No. 12: (B12) No. 11 — Starter motor:	Is there continuity?	Replace the power supply CM.	Repair or replace the harness.
19.CHECK HARNESS. 1) Turn the ignition switch to OFF. 2) Disconnect the clutch switch connector. 3) Using a tester, check continuity between the power supply CM connector and clutch switch connector. Connector & terminal (B420) No. 18 — (B106) No. 2: (B106) No. 1 — F/B fuse No. 21:	Is there continuity?	Replace the power supply CM.	Repair or replace the harness.
20.CHECK COLLATION CM. 1) Turn the ignition switch to OFF. 2) Replace with a new collation CM. 3) Register the collation CM. NOTE: For the registration procedures, refer to the “PC application help for Subaru Select Monitor”.	Can the engine start?	There was a malfunction in the collation CM.	Replace the ID code box.