C1555

POWER STEERING: POWER STEERING SYSTEM: C1521-C1524, C1532, C1555: Motor Circuit Malfunction


DESCRIPTION

The power steering ECU assembly supplies current to the power steering motor through this circuit.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - POWER STEERING MOTOR)

(a) Disconnect the C4 connector from the power steering ECU assembly.





(b) Disconnect the C3 connector from the power steering motor.

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

Resistance:





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

2. INSPECT POWER STEERING LINK ASSEMBLY (POWER STEERING MOTOR)

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





Resistance:





NOTICE:
- If replacing the power steering link assembly, clear the rotation angle sensor calibration value, initialize the rotation angle sensor, and calibrate the torque sensor zero point Power Steering System.
- If replacing the power steering ECU assembly, initialize the rotation angle sensor and calibrate the torque sensor zero point Power Steering System.
- If replacing the power steering link assembly, perform VGRS actuator angle initialization and VGRS actuator angle neutral calibration after wheel alignment adjustment Initialization for INITIALIZATION, Calibration for CALIBRATION).

NG -- REPLACE POWER STEERING LINK ASSEMBLY

OK -- REPLACE POWER STEERING ECU ASSEMBLY