C1553

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for 2ZR-FE): C1553: PIG Power Supply Overvoltage
C1553 - PIG Power Supply Overvoltage

DESCRIPTION

If the power steering ECU determines that the motor power source voltage and the IG voltage are not within the specified range, it stops the power assist as a fail-safe function.





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 Programming and Relearning.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (IG, PIG)

(a) Disconnect the connectors from the power steering ECU.





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

Standard Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER STEERING ECU Removal