C1524

POWER STEERING: ELECTRONIC POWER STEERING SYSTEM: C1521: Motor Circuit Malfunction

DTC C1521 - Motor Circuit Malfunction

DTC C1522 - Motor Circuit Malfunction

DTC C1523 - Motor Circuit Malfunction

DTC C1524 - Motor Circuit Malfunction

DTC C1532 - ECU Malfunction

DTC C1555 - Motor Relay Welding Failure

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 C5 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.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. INSPECT POWER STEERING GEAR ASSEMBLY (POWER STEERING MOTOR)





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





- If replacing the power steering gear assembly, clear the rotation angle sensor value calibration value, initialize the rotation angle sensor, and calibrate the torque sensor zero point Electronic Power Steering System.
NOTE: If replacing the power steering ECU assembly, initialize the rotation angle sensor value and calibrate the torque sensor zero point Electronic Power Steering System.

NG -- REPLACE POWER STEERING GEAR ASSEMBLY
OK -- REPLACE POWER STEERING ECU ASSEMBLY