Power Assist System (Brush)

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Brush Type Motor): C1581: Assist Map Number Un-Writing
C1581 - Assist Map Number Un-Writing

DESCRIPTION

DTC C1581 will be stored if the power steering ECU determines that the assist map is not written in the ECU.





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. PERFORM ASSIST MAP WRITING

(a) Perform the assist map writing Power Steering System (For Brush Type Motor).

NEXT -- Continue to next step.

2. CHECK FOR DTC

(a) Check for DTCs Power Steering System (For Brush Type Motor).

Result:





HINT
*1: Perform the assist map writing again if DTC C1581 is still output even after the assist map writing is performed once or twice.

C -- END

B -- PERFORM ASSIST MAP WRITING AGAIN Power Steering System (For Brush Type Motor)
A -- Continue to next step.

3. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

(a) Check for DTCs Power Steering System (For Brush Type Motor).

OK:

DTC is not output.

HINT
If the CAN communication system DTC is output, first troubleshoot the CAN communication system malfunction, then perform the assist map writing again Power Steering System (For Brush Type Motor).

NG -- GO TO CAN COMMUNICATION SYSTEM Initial Inspection and Diagnostic Overview
OK -- Continue to next step.

4. CHECK FOR DTC (HYBRID CONTROL SYSTEM)

(a) Check for DTCs Hybrid Control System.

OK:

DTC is not output.

HINT
If the hybrid control system DTC is output, first troubleshoot the hybrid control system, then perform the assist map writing again Power Steering System (For Brush Type Motor).

NG -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Hybrid Control System

OK -- REPLACE POWER STEERING ECU Removal