C1521

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for 2AR-FE with Wireless Door Lock): C1521-C1524, C1528, C1531-C1555: Motor Circuit Malfunction
C1555 - Motor Relay Welding Failure

DESCRIPTION

The power steering ECU assembly detects steering force using the signal received from the steering torque sensor, and also monitors the motor circuit for errors.





INSPECTION PROCEDURE

NOTICE:
If the power steering ECU assembly has been replaced with a new one, perform assist map writing and torque sensor zero point calibration 2AR-FE with Wireless Door Lock.

PROCEDURE

1. REPLACE POWER STEERING ECU ASSEMBLY

(a) Replace power steering ECU assembly Removal.

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