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

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


E191931E01


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.READ VALUE USING INTELLIGENT TESTER (KEY CERTIFICATION WAITING TIMED OUT)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester on.

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

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

    Power Source Control 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Key Certification Waiting Timed Out
    		Key Certification Waiting Timed Out/YES or NO
    		YES: Key Certification Waiting Timed Out matched
    NO: Key Certification Waiting Timed Out differs
    		-

    OK:
    When starting with the power supply in the ALL OFF condition, the ECU data monitor shows that nothing has been detected 1 second after turning the engine switch from off to on (IG).



NG
Go to step 9
OK


4.READ VALUE USING INTELLIGENT TESTER (START SWITCH 1, 2)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester on.

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

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

    Power Source Control 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Start Switch 1
    		Start Switch 1/ON or OFF
    		ON: Engine switch pushed
    OFF: Engine switch not pushed
    		-
    Start Switch 2
    		Start Switch 2/ON or OFF
    		ON: Engine switch pushed
    OFF: Engine switch not pushed
    		-

    OK:
    The ECU data monitor changes in response to the operation of the engine switch.

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



B
Go to step 10

C
Go to step 7
A


5.INSPECT POWER MANAGEMENT CONTROL ECU
B211613E10

  1. Connect the power management control ECU connectors.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester on.

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

  1. Read the Data List according to the display on the intelligent tester.
    Text in Illustration 
    *1
    		Rear view of wire harness connector
    (to Power Management Control ECU)

    Power Source Control 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Power Supply Condition
    		Power Supply Condition/IG2 ON, ST ON, All OFF, IG ON or ACC ON
    		IG2 ON: IG2 relay on
    ST ON: ST request signal on
    All OFF: All relays off
    IG1 ON: IG1 relay on
    ACC ON: ACC relay on
    		-

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D38-20 (IG1D) - Body ground
    		Engine switch off
    		Below 1 V
    Engine switch on (ACC)
    Engine switch on (IG)
    		Output voltage at terminal AM21 or AM22 is -2.0 V or more
    D36-8 (IG2D) - Body ground
    		Engine switch off
    		Below 1 V
    Engine switch on (ACC)
    Engine switch on (IG)
    		Output voltage at terminal AM21 or AM22 is -2.0 V or more
    D38-19 (ACCD) - Body ground
    		Engine switch off
    		Below 1 V
    Engine switch on (ACC)
    		Output voltage at terminal AM21 or AM22 is -2.5 V or more
    Engine switch on (IG)
    		Output voltage at terminal AM21 or AM22 is -2.5 V or more



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.INSPECT ENGINE SWITCH


    C164809E09

  1. Disconnect the D27 engine switch connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    7 (SS1) - 5 (GND)
    		Engine switch not pushed
    		10 kΩ or higher
    Engine switch pushed
    		Below 1 Ω
    2 (SS2) - 5 (GND)
    		Engine switch not pushed
    		10 kΩ or higher
    Engine switch pushed
    		Below 1 Ω

    Text in Illustration 
    *1
    		Component without harness connected
    (Engine Switch)



NG
REPLACE ENGINE SWITCH
OK


8.CHECK HARNESS AND CONNECTOR (ECU - ENGINE SWITCH)
B211619E02

  1. Disconnect the D38 or D73 ECU connector.

  1. Disconnect the D27 engine switch 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
      D38-17 (SSW2) - D27-2 (SS2)
      		Always
      		Below 1 Ω
      D38-18 (SSW1) - D27-7 (SS1)
      D38-17 (SSW2) - Body ground
      		Always
      		10 kΩ or higher
      D38-18 (SSW1) - Body ground
      D27-5 (GND) - Body ground
      		Always
      		Below 1 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)
      *3
      		Rear view of wire harness connector
      (to Engine Switch)

    2. for 1ND-TV

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      D73-17 (SSW2) - D27-2 (SS2)
      		Always
      		Below 1 Ω
      D73-18 (SSW1) - D27-7 (SS1)
      D73-17 (SSW2) - Body ground
      		Always
      		10 kΩ or higher
      D73-18 (SSW1) - Body ground
      D27-5 (GND) - Body ground
      		Always
      		Below 1 Ω

      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)  

9.CHECK FOR DTC

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body / Power Source / DTC.

  1. Read the DTC.

  1. Enter the following menus: Body / Entry & Start / DTC.

  1. Read the DTC.
    Result 
    Result
    		Proceed to
    None of the following DTCs are output.
    B2785 Communication Malfunction between ECUs Connected by LIN
    B2287 LIN Communication Master Malfunction
    B2784 Antenna Coil Open/Short
    		A
    B2287 is output but B2785 is not.
    		B
    A DTC other than B2287 is output.
    		C



B
GO TO DTC (B2287) (Click here)

C
GO TO DTC CHART (Click here)
A

GO TO ENTRY AND START SYSTEM (FOR ENTRY FUNCTION) (Click here)  

10.INSPECT POWER SOURCE CONTROL ECU
B211613E11

  1. Connect the power source control ECU connectors.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester on.

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

  1. Read the Data List according to the display on the intelligent tester.
    Text in Illustration 
    *1
    		Rear view of wire harness connector
    (to Power Source Control ECU)

    Power Source Control 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Power Supply Condition
    		Power Supply Condition/IG2 ON, ST ON, All OFF, IG ON or ACC ON
    		IG2 ON: IG2 relay on
    ST ON: ST request signal on
    All OFF: All relays off
    IG1 ON: IG1 relay on
    ACC ON: ACC relay on
    		-

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D73-20 (IG1D) - Body ground
    		Engine switch off
    		Below 1 V
    Engine switch on (ACC)
    Engine switch on (IG)
    		Output voltage at terminal AM21 or AM22 is -2.0 V or more
    D72-8 (IG2D) - Body ground
    		Engine switch off
    		Below 1 V
    Engine switch on (ACC)
    Engine switch on (IG)
    		Output voltage at terminal AM21 or AM22 is -2.0 V or more
    D73-19 (ACCD) - Body ground
    		Engine switch off
    		Below 1 V
    Engine switch on (ACC)
    		Output voltage at terminal AM21 or AM22 is -2.5 V or more
    Engine switch on (IG)
    		Output voltage at terminal AM21 or AM22 is -2.5 V or more



NG
REPLACE POWER SOURCE CONTROL ECU (Click here)
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