C1531

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1521, C1531-C1534, C1554; Motor Circuit Malfunction; 2013 MY FR-S [03/2012 -]
C1521 - Motor Circuit Malfunction
C1531 - ECU Malfunction
C1532 - ECU Malfunction
C1533 - ECU Malfunction
C1534 - ECU Malfunction
C1554 - Power Supply Relay Failure

DESCRIPTION

If the power steering ECU assembly stores these DTCs, it will shut off the power supply relay circuit (built into the power steering ECU assembly) and stop power assist. However, power assist continues if DTC C1533 or C1534 is stored.





INSPECTION PROCEDURE

NOTICE:
If the power steering ECU assembly is replaced with a new one, perform rotation angle sensor initialization and torque sensor zero point calibration Programming and Relearning.

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTC(s) Reading and Clearing Diagnostic Trouble Codes.

(b) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result





B -- REPLACE POWER STEERING ECU ASSEMBLY Removal

A -- USE SIMULATION METHOD TO CHECK