LIGHTING SYSTEM Back-up Light Circuit

DESCRIPTION

The hybrid vehicle control ECU controls the back-up lights via the BKUP LP relay.

WIRING DIAGRAM

B006IP2E01

CAUTION / NOTICE / HINT

Note


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

  • Before replacing the hybrid vehicle control ECU, refer to Service Bulletin.

PROCEDURE


  1. CHECK FOR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    5. Check for DTCs.


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      Hybrid control system DTCs are not output A
      Hybrid control system DTCs are output B

    B

    GO TO HYBRID CONTROL SYSTEM Click here

    A

  2. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND)


    1. Disconnect the 3D instrument panel junction block assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3D-3 - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - HYBRID VEHICLE CONTROL ECU)


    1. Disconnect the 3F instrument panel junction block assembly connector.

    2. Disconnect the A41 hybrid vehicle control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3F-19 - A41-20 (BL) Always Below 1 Ω
      3F-19 or A41-20 (BL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HYBRID VEHICLE CONTROL ECU (OUTPUT VOLTAGE)

    B006J9XC01
    *a

    Component with harness connected

    (Instrument Panel Junction Block Assembly)

    1. Connect the A41 hybrid vehicle control ECU connector.

    2. Connect the 3D and 3F instrument panel junction block assembly connectors.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      3F-19 - Body ground Power switch on (IG), reverse (R) not selected Below 1 V
      3F-19 - Body ground Power switch on (IG), reverse (R) selected 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    OK

  5. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (OUTPUT VOLTAGE)

    B006J9XC02
    *a

    Component with harness connected

    (Instrument Panel Junction Block Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      3H-10 - Body ground Power switch on (IG), reverse (R) not selected Below 1 V
      3H-10 - Body ground Power switch on (IG), reverse (R) selected 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here