C1521

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

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 (BETWEEN POWER STEERING ECU ASSEMBLY AND POWER STEERING MOTOR)





(a) Disconnect the P42 connector from the power steering ECU assembly.
(b) Disconnect the P43 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:





- If replacing the power steering link assembly, clear the rotation angle sensor calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point Programming and Relearning.
- If replacing the power steering ECU assembly, initialize the rotation angle sensor value and calibrate the torque sensor zero point Programming and Relearning.

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