STEERING LOCK SYSTEM, Diagnostic DTC:B2782

DTC Code DTC Name
B2782 Power Source Control ECU Malfunction

DESCRIPTION

The steering lock ECU activates the steering lock motor by the power from the main body ECU through the IGE circuit. This prevents the steering from being locked while the vehicle is moving.

The diagnosis information of the steering lock ECU is transmitted to the intelligent tester via the certification ECU (smart key ECU assembly) as the steering lock ECU is not connected to the CAN communication system.

DTC Code Detection Condition Trouble Area
B2782 IGE power supply circuit malfunction

  • Steering lock actuator assembly (steering lock ECU)

  • Main body ECU

  • Harness or connector

WIRING DIAGRAM

A0158GSE03

INSPECTION PROCEDURE

Tech Tips

When the engine switch is off, the main body ECU may occasionally go into a non-active state called sleep mode. Therefore, before proceeding with the inspection, it is necessary to perform the following steps to wake up the ECU:

With the engine switch off, open the driver door. Then (with the engine switch still off) open and close any door several times at 1.5 second intervals.

PROCEDURE


  1. CHECK DTC OUTPUT (B2785)


    1. Check for DTCs Click here.

      OK
      DTC B2782 is output, but DTC B2785 is not output.

    NG

    GO TO LIN COMMUNICATION SYSTEM (B2785) Click here

    OK

  2. INSPECT STEERING LOCK ECU

    A015AZZE08

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E26-3 (IGE) - E26-1 (GND)

      • Engine switch on (IG)

      • Steering lock motor is operating

      		 Below 1 V
      E26-3 (IGE) - E26-1 (GND)

      • Engine switch on (IG)

      • Steering lock motor is not operating

      		 11 to 14 V
      Result
      Result Proceed to
      Within specified range (for Power tilt and telescopic) A
      Outside specified range B
      Within specified range (for Manual tilt and telescopic) C

      Tech Tips

      When the steering lock is activated and the engine switch is turned on (IG), the steering lock motor activates to release the steering lock. The motor operation occurs for 2 to 15 seconds.


    B

    CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - MAIN BODY ECU AND BODY GROUND) Click here

    C

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

    A

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

  3. CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - MAIN BODY ECU AND BODY GROUND)

    A015DXHE12

    1. Disconnect the E26 steering lock ECU connector.

    2. Disconnect the E1 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E26-3 (IGE) - E1-19 (SLR+) Always Below 1 Ω
      E26-1 (GND) - Body ground Always Below 1 Ω
      E26-3 (IGE) or E1-19 (SLR+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU