B2782

STEERING COLUMN: STEERING LOCK SYSTEM: B2782: Power Source Control ECU Malfunction

DTC B2782 - Power Source Control ECU Malfunction

DESCRIPTION

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





WIRING DIAGRAM





INSPECTION PROCEDURE
HINT: After replacing the steering lock ECU (steering lock actuator assembly), confirm the Initialization of the steering lock Programming and Relearning.

PROCEDURE

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




(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:





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

Text in Illustration





NG -- CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - BODY GROUND)
OK -- REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)
2. CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - BODY GROUND)




(a) Disconnect the D17 connector from the steering lock actuator assembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - POWER MANAGEMENT CONTROL ECU)




(a) Disconnect the D43 connector from the power management control ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE POWER MANAGEMENT CONTROL ECU