C1523

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 CONNECTORS

(a) Check the connection of the power steering ECU assembly and power steering gear assembly connectors.

(b) Visually inspect the terminals of the power steering ECU assembly and power steering gear assembly connectors.

Result:





B -- CONNECT CONNECTORS CORRECTLY

C -- REPLACE POWER STEERING ECU ASSEMBLY

D -- REPLACE POWER STEERING GEAR ASSEMBLY
A -- Continue to next step.

2. 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.

3. INSPECT POWER STEERING GEAR ASSEMBLY (POWER STEERING MOTOR)

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





Standard resistance:





NOTICE:
- 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 Programming and Relearning.
* NOTICE:
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 GEAR ASSEMBLY

OK -- REPLACE POWER STEERING ECU ASSEMBLY