C1524

Power Steering: Electronic Power Steering System: C1521-C1524, C1532: Motor Circuit Malfunction (Camry HV)






Description

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

Wiring Diagram:

Inspection Procedure

1. Reconfirm DTC output
a. Check for DTC Reading and Clearing Diagnostic Trouble Codes

Result:

HINT:
If DTC C1555 is output, perform troubleshooting for C1555 first.

B > Go To Diagnostic Trouble Chart

A
V

2. Check Harness And Connector (Power Steering ECU Assembly - Power Steering Motor)






(a) Disconnect the A68 connector from the power steering ECU.
(b) Disconnect the A69 connector from the power steering motor.
(c) Measure the resistance according the the value(s) in the table below.

Standard Resistance:

NG > Repair Or Replace Harness Or Connector

OK
V

3. Inspect power steering link assembly (Power Steering Motor)

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

Standard Resistance:

*: Touch the negative probe to the power steering link assembly housing at the position shown in the illustration to perform the measurement.

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 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 The Power Steering Link Assembly

OK > Replace The Power Steering ECU Assembly