C1534

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1511-C1514, C1521, C1524, C1528, C1531-C1555: Torque Sensor Circuit Malfunction
C1555 - Motor Relay Welding Failure

DESCRIPTION

The torque sensor converts the rotation torque input to the steering wheel into an electrical signal and sends it to the power steering ECU. Based on this signal, the ECU detects steering effort.

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





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, power steering motor and rotation sensor connectors.

OK:

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

NG -- CONNECT CONNECTOR

OK -- REPLACE STEERING COLUMN ASSEMBLY Removal