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

DTC Code DTC Name
Power Source Mode does not Change to ON (IG)

DESCRIPTION

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

WIRING DIAGRAM

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

CAUTION / NOTICE / HINT

Note:

  • When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the vehicle, and turn a courtesy light switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.

  • Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system.

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

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)

    Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)

    Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 RELAY)

    Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR, OR REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 RELAY)Click here

  4. INSPECT IG1 RELAY

    Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR, OR REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 RELAY)Click here

  5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)

    Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR, OR REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 RELAY)Click here

  6. CHECK POWER MANAGEMENT CONTROL ECU

    1. Disconnect the H71 and H70 power management control ECU connectors.

      U122692E03
      Table 1. Text in Illustration

      *1

      Rear view of wire harness connector

      (Power Management Control ECU)

      -

      -

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H70-8 (IG2D) - Body ground

      20°C (68°F)

      255 to 387 Ω

      H71-20 (IG1D) - Body ground

      20°C (68°F)

      152 to 203 Ω
      Table 2. Result

      Result

      Proceed to

      OK

      A

      NG (for LHD)

      B

      NG (for RHD)

      C

    REPLACE POWER MANAGEMENT CONTROL ECU

    (Click here)

    REPLACE POWER MANAGEMENT CONTROL ECU

    (Click here)

  7. CHECK ENGINE SWITCH

    Click here

    END

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IG1 RELAY AND IG2 RELAY)

  8. REPAIR OR REPLACE HARNESS OR CONNECTOR, OR REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 RELAY)

    Click here

  9. CHECK POWER MANAGEMENT CONTROL ECU

    Click here

    REPLACE POWER MANAGEMENT CONTROL ECU

    (Click here)

    REPLACE POWER MANAGEMENT CONTROL ECU

    (Click here)

  10. CHECK ENGINE SWITCH

    Click here

    END

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IG1 RELAY AND IG2 RELAY)