STEERING LOCK SYSTEM, Diagnostic DTC:B2782

DTC Code DTC Name
B2782 Power Source Control ECU Malfunction

DESCRIPTION

The power source control ECU controls the power supply to activate the steering lock motor. This prevents the steering from being locked while the vehicle is moving.

DTC No. DTC Detecting Condition Trouble Area
B2782 Steering lock motor drive control circuit is defective.

  • Wire harness

  • Steering lock actuator assembly (Steering lock ECU)

  • Power source control ECU

WIRING DIAGRAM

A0162N4E19

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)


    1. A0160XVE01

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J29-3 (IGE) - J29-1 (GND)

      Specified condition is checked after performing the following:


      1. Turn the engine switch off

      2. Turn the engine switch on (ACC or IG)

      • Motor activated: Below 1 V

      • Motor not activated: 10 to 12 V
      J29-3 (IGE) - J29-1 (GND)

      Specified condition is checked after performing the following:


      1. Move the shift lever to P

      2. Turn the engine switch off

      3. Open the driver's door

      • Motor activated: Below 1 V

      • Motor not activated: 10 to 12 V

      Tech Tips

      The steering lock ECU and steering lock actuator assembly are supplied as a unit.


    NG

    CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - BODY GROUND) Click here

    OK

    REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Click here

  2. CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - BODY GROUND)


    1. A0162CFE01

      Disconnect the J29 connector from the steering lock actuator assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J29-1 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - POWER SOURCE CONTROL ECU)


    1. A0161LKE01

      Disconnect the J55 connector from the power source control ECU.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J29-3 (IGE) - J55-32 (SLR+) Always Below 1 Ω
      J29-3 (IGE) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER SOURCE CONTROL ECU