If the power steering ECU assembly determines that there is a malfunction in the IG circuit inside the ECU, it outputs this DTC. This DTC is not output when there is an open circuit in the wire harness connected to terminal IG or a battery voltage drop.
DTC No.
DTC Detection Condition
Trouble Area
C1551
IG power source circuit malfunction inside ECU
Power steering ECU assembly
INSPECTION PROCEDURE
1.REPLACE POWER STEERING ECU ASSEMBLY
NOTICE:
If replacing the power steering ECU assembly, initialize the rotation angle sensor and calibrate the torque sensor zero point (Click here).
