C1514

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1511/11-C1514/11, C1521/25, C1524/24, C1531/25-C1555/25: Torque Sensor 1 Malfunction
C1555/25 - Motor Relay Welding Failure

DESCRIPTION

The power steering ECU, power steering torque sensor and power steering motor are built into the steering column assembly.

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





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* When the steering column assembly is replaced, perform the assist map writing Programming and Relearning.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK CONNECTOR CONNECTION CONDITION (STEERING COLUMN ASSEMBLY)

(a) Check the installation condition of the torque sensor and motor connectors.

OK:

Torque sensor and motor connectors are securely connected to the power steering ECU.

NG -- CONNECT CONNECTOR

OK -- REPLACE STEERING COLUMN ASSEMBLY Removal