C1524

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Brush Type Motor): C1524, C1555: Motor Circuit Malfunction
C1555 - Motor Relay Welding Failure

DESCRIPTION

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





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
If the power steering ECU has been replaced with a new one, perform the assist map writing and the torque sensor zero point calibration Power Steering System (For Brush Type Motor).

PROCEDURE

1. CHECK POWER STEERING ECU ASSEMBLY

(a) Turn the power switch on (READY).





(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:





Text in Illustration





NG -- REPLACE POWER STEERING ECU ASSEMBLY Removal
OK -- Continue to next step.

2. CHECK POWER STEERING MOTOR ASSEMBLY

(a) Disconnect the connector from the power steering ECU assembly.





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

Standard Resistance:





Text in Illustration





NG -- REPLACE POWER STEERING MOTOR ASSEMBLY Removal

OK -- REPLACE POWER STEERING ECU ASSEMBLY Removal