ENTRY AND START SYSTEM (for Start Function) > Engine does not Start

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DESCRIPTION

1. for Continuously Variable Transaxle: If the engine switch is pressed with the shift lever in P or N and the brake pedal depressed, the power management control ECU*1 or power source control ECU*2 determines that it is an engine start request.
   for Manual Transaxle: If the engine switch is pressed with the clutch pedal depressed, the power management control ECU*1 or power source control ECU*2 determines that it is an engine start request.
   

2. The certification ECU (smart key ECU assembly) and other ECUs perform key verification via the LIN communication line.
   

3. The power management control ECU*1 or power source control ECU*2 activates the ACC relay.
   

4. The power management control ECU*1 or power source control ECU*2 activates the IG1 and IG2 relays.
   

5. The certification ECU (smart key ECU assembly) outputs a steering UNLOCK signal. The signal is sent to the power management control ECU*1 or power source control ECU*2 via the steering lock ECU.
   

6. The ECM and power management control ECU*1 or power source control ECU*2 activate the starter relay.
   

7. The power management control ECU*1 or power source control ECU*2 deactivates the ACC relay until the power management control ECU*1 or power source control ECU*2 detects an engine start.
   

WIRING DIAGRAM

INSPECTION PROCEDURE

1. for Continuously Variable Transaxle: If there is a malfunction in the stop light switch assembly or STOP fuse, the signals may not be correctly transmitted to the power management control ECU*1 or power source control ECU*2. This may result in the engine not starting even if the engine switch is pressed while the brake pedal is depressed and the shift lever is in P.
   for Manual Transaxle: If there is a malfunction in the stop light switch assembly or STOP fuse, the signals may not be correctly transmitted to the power management control ECU*1 or power source control ECU*2. This may result in the engine not starting even if the engine switch is pressed while the brake pedal and clutch pedal are depressed.
   To activate the starter:
   
   

   1. Turn the engine switch from off to on (ACC).
      

   2. Press and hold the engine switch for 15 seconds.
      

HINT:

After the certification ECU (smart key ECU assembly), steering lock actuator assembly (steering lock ECU), ID code box (immobiliser code ECU) and/or ECM are/is replaced, perform the registration procedures for the engine immobiliser system.

1. *1: for 1KR-FE and 1NR-FE
   
2. *2: for 1ND-TV
   

1. for Continuously Variable Transaxle: Place the electrical key on the seat. Move the shift lever to P. Step on the brake pedal.
   for Manual Transaxle: Place the electrical key on the seat. Step on the clutch pedal.
   

2. Check that the engine switch indicator is illuminated in green, push the engine switch, and check that the engine starts.
   

3. Open and close the driver's door with the engine switch off.
   

4. Check if the engine can be started.
   

   OK:

   Engine can be started.
   

   HINT:

   After the battery is discharged and then recharged or replaced, the engine may not start unless the steering lock is initialized using the above procedure.

NG	Go to step 2

OK
USE SIMULATION METHOD TO CHECK (Click here)

1. Read value using intelligent tester (Power Supply Open).
   

   1. Connect the intelligent tester to the DLC3.
      

   2. Turn the engine switch on (IG).
      

   3. Turn the intelligent tester on.
      

   4. Enter the following menus: Body / Entry & Start / Data List.
      

   5. Read the Data List according to the display on the intelligent tester.
      
      

      Entry and Start 

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Power Supply Open	Power supply open / OK or NG (Past)	OK: Power supply open occurs NG (Past): Power supply open does not occur	-

2. Check for DTC
   

   1. Enter the following menus: All / DTC.
      

   2. Read the DTC.
      

      Result 

      Result	Proceed to
      No DTC output	A
      DTC output	B
      Power supply open occurs	C

B	GO TO APPLICABLE DTC CHART
C	GO TO STEERING LOCK SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) (Click here)

A

1. Check if the power source mode changes.
   

   1. When the key is inside the vehicle and the shift lever is in P, check that the power source mode changes.
      

      Result 

      Result	Proceed to
      OK: off → on (ACC) → on (IG) → off	A
      Power Source Mode does not Change to ON (IG and ACC)	B
      Power Source Mode does not Change to ON (IG)	C
      Power Source Mode does not Change to ON (ACC)	D

B	GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (IG AND ACC) (Click here)
C	GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (IG) (Click here)
D	GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (ACC) (Click here)

A

1. Check the engine cranking function.
   

   1. for Continuously Variable Transaxle: When there is fuel in the fuel tank, the key is inside the vehicle, and the shift lever is in P, check that depressing the brake pedal and pressing the engine switch cranks the engine.
      for Manual transaxle: When there is fuel in the fuel tank and the key is inside the vehicle, check that depressing the clutch pedal and pressing the engine switch cranks the engine.
      

      OK:

      Engine cranks.
      

      Result 

      Result	Proceed to
      OK (for 1KR-FE)	A
      OK (for 1NR-FE)	B
      OK (for 1ND-TV)	C
      NG	D

B	GO TO SFI SYSTEM (Click here)
C	GO TO ECD SYSTEM (Click here)
D	Go to step 5

A
GO TO SFI SYSTEM (Click here)

1. for Continuously Variable Transaxle:
   

   1. Disconnect the B13 park/neutral start switch connector.
      

   2. Measure the resistance according to the value(s) in the table below.
      

      Standard Resistance:

      Tester Connection	Condition	Specified Condition
      4 (B) - 5 (L)	Shift lever in P or N	Below 1 Ω
      	Shift lever not in P or N	10 kΩ or higher

      Text in Illustration 

      *1	Component without harness connected Park/Neutral Start Switch

2. for Manual Transaxle:
   

   1. Disconnect the A29 clutch start switch connector.
      

   2. Measure the resistance according to the value(s) in the table below.
      

      Standard Resistance:

      Tester Connection	Switch Condition	Specified Condition
      1 - 2	Pushed in (Clutch pedal depressed)	Below 1 Ω
      	Released (Clutch pedal released)	10 kΩ or higher

NG	Go to step 19

OK

1. Remove the ST relay from the engine relay block.
   

2. Measure the resistance according value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   3 - 5	Battery voltage not applied	10 kΩ or higher
   	Battery voltage applied to terminals 1 and 2	Below 1 Ω

NG	Go to step 19

OK

1. Disconnect the D36 or D72 ECU connector.
   

2. Shift lever in P or N.
   

3. Measure the resistance according to the value(s) in the table below.
   

   1. for 1KR-FE and 1NR-FE
      

      Standard Resistance:

      Tester Connection	Condition	Specified Condition
      D36-3 (STAR) - Body ground	20°C (68°F)	93.8 to 136.4 Ω

      Text in Illustration 

      *A	for 1KR-FE and 1NR-FE
      *B	for 1ND-TV
      *1	Rear view of wire harness connector (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
      *2	Rear view of wire harness connector (to Power Source Control ECU) (for 1ND-TV)

   2. for 1ND-TV
      

      Standard Resistance:

      Tester Connection	Condition	Specified Condition
      D72-3 (STAR) - Body ground	20°C (68°F)	93.8 to 136.4 Ω

NG	Go to step 19

OK

1. for Continuously Variable Transaxle:
   

   1. Connect the intelligent tester to the DLC3.
      

   2. Turn the engine switch on (IG).
      

   3. Turn the intelligent tester on.
      

   4. Enter the following menus: Body / Power Source Control / Data List.
      

   5. Read the Data List according to the display on the intelligent tester.
      
      

      Power Source Control 

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Stop Light Switch1	Stop light switch 1/ON or OFF	ON: Brake pedal depressed OFF: Brake pedal released	-

      OK:

      ON (brake pedal depressed) and OFF (brake pedal released) appear on the screen.
      

2. for Manual Transaxle:
   

   1. Connect the intelligent tester to the DLC3.
      

   2. Turn the engine switch on (IG).
      

   3. Turn the intelligent tester on.
      

   4. Enter the following menus: Body / Power Source Control / Data List.
      

   5. Read the Data List according to the display on the intelligent tester.
      
      

      Power Source Control 

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Clutch SW	Clutch switch/ON or OFF	ON: Clutch pedal depressed OFF: Clutch pedal released	-

      OK:

      ON (clutch pedal depressed) and OFF (clutch pedal released) appear on the screen.
      

      Result 

      Result	Proceed to
      OK	A
      NG (for Continuously Variable Transaxle)	B
      NG (for 1KR-FE and 1NR-FE Manual Transaxle)	C
      NG (for 1ND-TV Manual Transaxle)	D

B	Go to step 15
C	REPLACE POWER MANAGEMENT CONTROL ECU (Click here)
D	REPLACE POWER SOURCE CONTROL ECU (Click here)

A

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG).
   

3. Turn the intelligent tester on.
   

4. Enter the following menus: Body / Power Source Control / Data List.
   

5. Read the Data List according to the display on the intelligent tester.
   
   

   Power Source Control 

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Steering Unlock Switch	Steering unlock switch/ON or OFF	ON: Steering unlock OFF: Steering lock	-

   OK:

   ON (steering unlock) and OFF (steering lock) appear on the screen.
   

NG	Go to step 17

OK

1. Change the engine switch from off to on (ACC) and check that the steering lock moves to the unlocked position when the engine switch is on (ACC).
   

OK:

Lock moves to unlocked position.

NG	GO TO STEERING LOCK SYSTEM (Click here)

OK

1. Connect the intelligent tester to the DLC3.
   

2. Turn the intelligent tester on.
   

3. Enter the following menus: Body / Entry & Start / Data List.
   

4. Read the Data List according to the display on the intelligent tester.
   

   HINT:

   When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

5. Turn the engine switch on (IG).
   
   

   Entry and Start 

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   L Code Check	L code certification result/OK or NG	OK: L code certification result normal NG: L code certification result abnormal	-

   OK:

   OK (L code certification result normal) appears on the screen.
   

NG	GO TO ENGINE IMMOBILISER SYSTEM (Click here)

OK

1. Connect the intelligent tester to the DLC3.
   

2. Turn the intelligent tester on.
   

3. Enter the following menus: Body / Entry & Start / Data List.
   

4. Read the Data List according to the displays on the tester screen.
   

5. Turn the engine switch on (IG).
   
   

   Entry & Start 

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine Start Request	Start request signal response/OK or NG	OK: Received NG: Not received	-

   OK:

   IG on (IG) appear on the screen.
   

NG	REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

OK

1. Connect the intelligent tester to the DLC3.
   

2. Turn the intelligent tester on.
   

3. Enter the following menus: Body / Entry & Start / Data List.
   

4. Read the Data List according to the display on the intelligent tester.
   

   HINT:

   When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

5. Turn the engine switch on (IG).
   
   

   Entry and Start 

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   S Code Check	S code certification result/OK or NG	OK: S code certification result normal NG: S code certification result abnormal	-

   OK:

   OK (S code certification result normal) appears on the screen.
   

NG	GO TO ENGINE IMMOBILISER SYSTEM (Click here)

OK

1. Connect the intelligent tester to the DLC3.
   

2. Turn the intelligent tester on.
   

3. Enter the following menus: Body / Power Source Control / Data List.
   

4. Read the Data List according to the display on the intelligent tester.
   

5. Turn the engine switch on (IG).
   
   

   Power Source Control 

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Starter Request Signal	Starter request signal monitor/ON or OFF	ON: ST relay on OFF: ST relay off	-

   NOTICE:

   Check that the engine switch indicator is illuminated in green and push the engine switch.

   OK:

   Engine switch on (IG) and off appears on the screen.
   

   Result 

   Result	Proceed to
   OK (for 1KR-FE)	A
   OK (for 1NR-FE)	B
   OK (for 1ND-TV)	C
   NG (for 1KR-FE and 1NR-FE)	D
   NG (for 1ND-TV)	E

B	GO TO SFI SYSTEM (Click here)
C	GO TO ECD SYSTEM (Click here)
D	REPLACE POWER MANAGEMENT CONTROL ECU (Click here)
E	REPLACE POWER SOURCE CONTROL ECU (Click here)

A
GO TO SFI SYSTEM (Click here)

1. Disconnect the stop light switch assembly connector.
   

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   1 - 2	Pushed	10 kΩ or higher
   3 - 4
   1 - 2	Not pushed	Below 1 Ω
   3 - 4

NG	REPLACE STOP LIGHT SWITCH ASSEMBLY (Click here)

OK

1. Disconnect the D36 or D72 ECU connector.
   

2. Disconnect the A27 stop light switch connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

4. for 1KR-FE and 1NR-FE
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   D36-11 (STP1) - A27-1	Always	Below 1 Ω
   D36-11 (STP1) - Body ground		10 kΩ or higher

   Text in Illustration 

   *A	for 1KR-FE and 1NR-FE
   *B	for 1ND-TV
   *1	Rear view of wire harness connector (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
   *2	Rear view of wire harness connector (to Power Source Control ECU) (for 1ND-TV)
   *3	Component without harness connected (Stop Light Switch Assembly)

   1. Reconnect the A27 stop light switch connector.
      

   2. Measure the voltage according to the value(s) in the table below.
      

      Standard Voltage:

      Tester Connection	Condition	Specified Condition
      D36-11 (STP1) - Body ground	Brake pedal released	Below 1 V
      	Brake pedal depressed	Output voltage at terminal AM21 or AM22 -2.5 V or more

5. for 1ND-TV
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   D72-11 (STP1) - A27-1	Always	Below 1 Ω
   D72-11 (STP1) - Body ground		10 kΩ or higher

   1. Reconnect the A27 stop light switch connector.
      

   2. Measure the voltage according to the value(s) in the table below.
      

      Standard Voltage:

      Tester Connection	Condition	Specified Condition
      D72-11 (STP1) - Body ground	Brake pedal released	Below 1 V
      	Brake pedal depressed	Output voltage at terminal AM21 or AM22 -2.5 V or more

      Result 

      Result	Proceed to
      OK (for 1KR-FE and 1NR-FE)	A
      OK (for 1ND-TV)	B
      NG	C

B	REPLACE POWER SOURCE CONTROL ECU (Click here)
C	REPAIR OR REPLACE HARNESS OR CONNECTOR

A
REPLACE POWER MANAGEMENT CONTROL ECU (Click here)

1. Disconnect the D38 or D73 ECU connector.
   

2. Disconnect the D33 steering lock ECU connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   1. for 1KR-FE and 1NR-FE
      

      Standard Resistance:

      Tester Connection	Condition	Specified Condition
      D38-3 (SLP) - D33-4 (SLP1)	Always	Below 1 Ω
      D38-3 (SLP) - Body ground		10 kΩ or higher

      Text in Illustration 

      *A	for 1KR-FE and 1NR-FE
      *B	for 1ND-TV
      *1	Rear view of wire harness connector (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
      *2	Rear view of wire harness connector (to Power Source Control ECU) (for 1ND-TV)
      *3	Front view of wire harness connector (to Steering Lock Actuator Assembly (Steering Lock ECU))

   2. for 1ND-TV
      

      Standard Resistance:

      Tester Connection	Condition	Specified Condition
      D73-3 (SLP) - D33-4 (SLP1)	Always	Below 1 Ω
      D73-3 (SLP) - Body ground		10 kΩ or higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. Reconnect the D33 steering lock actuator assembly (steering lock ECU) connector.
   

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   4 (SLP1) - Body ground	Steering lock	10 kΩ or higher
   	Steering unlock	Below 1 Ω

   Text in Illustration 

   *1	Component with harness connected (Steering Lock Actuator Assembly (Steering Lock ECU))

   Result 

   Result	Proceed to
   OK (for 1KR-FE and 1NR-FE)	A
   OK (for 1ND-TV)	B
   NG	C

B	REPLACE POWER SOURCE CONTROL ECU (Click here)
C	REPLACE STEERING LOCK ACTUATOR (Click here)

A
REPLACE POWER MANAGEMENT CONTROL ECU (Click here)

1. Replace with a new or normally functioning part. Repair or replace any damaged wire harness or connector.
   

NEXT

1. Connect the intelligent tester to the DLC3.
   

2. Turn the intelligent tester on.
   

3. Enter the following menus: Body / Power Source Control / Data List.
   

4. Read the Data List according to the display on the intelligent tester.
   

5. Turn the engine switch on (IG).
   
   

   Power Source Control 

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Starter Request Signal	Starter request signal monitor/ON or OFF	ON: ST relay on OFF: ST relay off	-

   NOTICE:

   Check that the engine switch indicator is illuminated in green and push the engine switch.

   OK:

   Engine switch on (IG) and off appears on the screen.
   

   Result 

   Result	Proceed to
   OK	A
   NG (for 1KR-FE and 1NR-FE)	B
   NG (for 1ND-TV)	C

B	REPLACE POWER MANAGEMENT CONTROL ECU (Click here)
C	REPLACE POWER SOURCE CONTROL ECU (Click here)

A

1. for Continuously Variable Transaxle: Place the electrical key on the seat. Move the shift lever to P. Step on the brake pedal.
   for Manual Transaxle: Place the electrical key on the seat. Step on the clutch pedal.
   

2. Check that the engine switch indicator is illuminated in green, push the engine switch, and check that the engine starts.
   

3. Open and close the driver's door with the engine switch off.
   

4. Check if the engine can be started.
   

   OK:

   Engine can be started.
   

   HINT:

   After the battery is discharged and then recharged or replaced, the engine may not start unless the steering lock is initialized using the above procedure.

NG	CHECK HARNESS AND CONNECTOR (BATTERY - RELAY)

OK
END