ENTRY AND START SYSTEM (for Start Function) > Power Source Mode does not Change to ON (IG)

for Preparation Click here


DESCRIPTION

When the engine switch is pushed with the electrical key in the cabin, the power management control ECU*1 or power source control ECU*2 receives signals to switch the power source mode.

HINT:
To allow use of the intelligent tester to inspect the push-button start function when the engine switch is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between the intelligent tester and power management control ECU*1 or power source control ECU*2. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)

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

WIRING DIAGRAM

Refer to Power Source Mode does not Change to ON (IG and ACC) (Click here).

INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

1.CHECK HARNESS AND CONNECTOR (POWER SOURCE)
C185500E33

  1. Disconnect the D38 or D73 ECU connector.

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

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

      Standard Voltage:
      Tester Connection
      		Condition
      		Specified Condition
      D38-2 (AM21) - Body ground
      		Always
      		9.5 to 16 V
      D38-1 (AM22) - Body ground

      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 Voltage:
      Tester Connection
      		Condition
      		Specified Condition
      D73-2 (AM21) - Body ground
      		Always
      		9.5 to 16 V
      D73-1 (AM22) - Body ground



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK HARNESS AND CONNECTOR (GROUND)
C185500E34

  1. Disconnect the D38 or D73 ECU connector.

  1. 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
      D38-6 (GND) - Body ground
      		Always
      		Below 1 Ω
      D38-5 (GND2) - Body ground

      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
      D73-6 (GND) - Body ground
      		Always
      		Below 1 Ω
      D73-5 (GND2) - Body ground



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


  1. Disconnect the instrument panel junction block assembly connectors.


    B213269E01


    Text in Illustration 
    *1
    		Component without harness connected
    (Instrument Panel Junction Block Assembly)
    		-
    		-

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3A-1 - 3C-36
    		When battery voltage absent
    		10 kΩ or higher
    3A-1 - 3B-1
    3A-1 - 3C-36
    		When battery voltage is applied to terminals 3C-23 and 3C-10
    		Below 1 Ω
    3A-1 - 3B-1



    B213270E01

  1. Remove the integration relay from the engine room relay block.

  1. 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
      1A-1 - 1B-6
      		When battery voltage absent
      		10 kΩ or higher
      When battery voltage is applied to terminals 1D-11 and 1C-3
      		Below 1 Ω

      Text in Illustration 
      *1
      		Component without harness connected
      (Integration Relay)

    2. for 1ND-TV

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      1A-1 - 1D-1
      		When battery voltage absent
      		10 kΩ or higher
      When battery voltage is applied to terminals 1D-11 and 1C-3
      		Below 1 Ω

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


NG
Go to step 7
OK


4.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECU)
B213274E03

  1. Disconnect the instrument panel junction block assembly connectors.

  1. Disconnect the D38 or D73 ECU connector.

  1. 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
      D38-20 (IG1D) - 3C-23
      		Always
      		Below 1 Ω
      3C-10 - Body ground

      Text in Illustration 
      *A
      		for 1KR-FE and 1NR-FE
      *B
      		for 1ND-TV
      *1
      		Front view of wire harness connector
      (to Instrument Panel Junction Block Assembly)
      *2
      		Rear view of wire harness connector
      (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
      *3
      		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
      D73-20 (IG1D) - 3C-23
      		Always
      		Below 1 Ω
      3C-10 - Body ground

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



B
Go to step 7

C
Go to step 10

D
Go to step 12
A


5.INSPECT POWER MANAGEMENT CONTROL ECU
B211613E01

  1. Reconnect the D36 and D38 ECU connectors.

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

Standard Voltage:
Tester Connection
Switch Condition
Specified Condition
D36-8 (IG2D) - Body ground
Engine switch off
Below 1 V
Engine switch on (IG)
Output voltage at terminal AM21 or AM22 is -2 V or more.
D38-20 (IG1D) - Body ground
Engine switch off
Below 1 V
Engine switch on (IG)
Output voltage at terminal AM21 or AM22 is -2 V or more.

Text in Illustration 
*1
Rear view of wire harness connector
(to Power Management Control ECU)


NG
REPLACE POWER MANAGEMENT CONTROL ECU (Click here)
OK


6.CHECK ENGINE SWITCH

  1. Check that the power changes to on (ACC) and on (IG) when operating the engine switch.

    OK:
    The power changes to on (ACC) and on (IG) in response to the operation of the engine switch.



NG
CHECK HARNESS AND CONNECTOR (BATTERY - RELAY)
OK

END 

7.REPAIR OR REPLACE HARNESS, CONNECTOR OR INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

  1. Repair or replace harness, connector or instrument panel junction block assembly.


NEXT


8.INSPECT POWER MANAGEMENT CONTROL ECU
B211613E01

  1. Reconnect the D36 and D38 ECU connectors.

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

Standard Voltage:
Tester Connection
Switch Condition
Specified Condition
D36-8 (IG2D) - Body ground
Engine switch off
Below 1 V
Engine switch on (IG)
Output voltage at terminal AM21 or AM22 is -2 V or more.
D38-20 (IG1D) - Body ground
Engine switch off
Below 1 V
Engine switch on (IG)
Output voltage at terminal AM21 or AM22 is -2 V or more.

Text in Illustration 
*1
Rear view of wire harness connector
(to Power Management Control ECU)


NG
REPLACE POWER MANAGEMENT CONTROL ECU (Click here)
OK


9.CHECK ENGINE SWITCH

  1. Check that the power changes to on (ACC) and on (IG) when operating the engine switch.

    OK:
    The power changes to on (ACC) and on (IG) in response to the operation of the engine switch.



NG
CHECK HARNESS AND CONNECTOR (BATTERY - RELAY)
OK

END 

10.INSPECT POWER SOURCE CONTROL ECU
B211613E04

  1. Reconnect the power source control ECU connectors.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D73-19 (ACCD) - Body ground
    		Engine switch off
    		Below 1 V
    Engine switch on (IG)
    		Output voltage at terminal AM21 or AM22 is -2 V or more.

    Text in Illustration 
    *1
    		Rear view of wire harness connector
    (to Power Source Control ECU)



NG
REPLACE POWER SOURCE CONTROL ECU
OK


11.CHECK ENGINE SWITCH

  1. Check that the power changes to on (ACC) and on (IG) when operating the engine switch.

    OK:
    The power changes to on (ACC) and on (IG) in response to the operation of the engine switch.



NG
CHECK HARNESS AND CONNECTOR (BATTERY - RELAY)
OK

END 

12.REPAIR OR REPLACE HARNESS, CONNECTOR OR INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

  1. Repair or replace harness, connector or instrument panel junction block assembly.


NEXT


13.INSPECT POWER SOURCE CONTROL ECU
B211613E03

  1. Reconnect the D72 and D73 ECU connectors.

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

Standard Voltage:
Tester Connection
Switch Condition
Specified Condition
D72-8 (IG2D) - Body ground
Engine switch off
Below 1 V
Engine switch on (IG)
Output voltage at terminal AM21 or AM22 is -2 V or more.
D73-20 (IG1D) - Body ground
Engine switch off
Below 1 V
Engine switch on (IG)
Output voltage at terminal AM21 or AM22 is -2 V or more.

Text in Illustration 
*1
Rear view of wire harness connector
(to Power Source Control ECU)


NG
REPLACE POWER SOURCE CONTROL ECU
OK


14.CHECK ENGINE SWITCH

  1. Check that the power changes to on (ACC) and on (IG) when operating the engine switch.

    OK:
    The power changes to on (ACC) and on (IG) in response to the operation of the engine switch.



NG
CHECK HARNESS AND CONNECTOR (BATTERY - RELAY)
OK

END