C1581

POWER STEERING: ELECTRONIC POWER STEERING SYSTEM: C1581: Assist Map Number Un-Writing

DTC C1581 - Assist Map Number Un-Writing

DESCRIPTION

The power steering ECU outputs this DTC when it determines that assist map is not written in the ECU. It is necessary to replace the power steering ECU when this code is output because this malfunction cannot be repaired.
HINT: The assist map is data written in the power steering ECU to control assisting power. The assist map is selected from four types based on the vehicle specification communication data (designation and grade package information).





INSPECTION PROCEDURE

PROCEDURE

1. RECONFIRM DTC
(a) Check for DTCs.
OK:
DTCs other than C1581 are not output.
NG -- REPAIR CIRCUIT INDICATED BY OUTPUT CODE
OK -- REPLACE POWER STEERING ECU