C1581

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1581: Assist Map Number Un-Writing
C1581 - Assist Map Number Un-Writing

DESCRIPTION

When a map is not recorded in the steering column assembly (power steering ECU), then this DTC is stored.





INSPECTION PROCEDURE

NOTICE:
When the steering column assembly is replaced, perform the assist map writing Programming and Relearning.

PROCEDURE

1. PERFORM ASSIST MAP WRITING

(a) Perform the assist map writing Programming and Relearning.

NEXT -- Continue to next step.

2. CHECK DTC OUTPUT

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

Result





B -- CHECK CAN COMMUNICATION SYSTEM

A -- END

3. CHECK CAN COMMUNICATION SYSTEM

(a) Check for DTCs of the CAN communication system Diagnosis System.

Result





B -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

4. CHECK ECM

(a) Check that the correct ECM is installed.

OK:

The correct ECM is installed.

Result





C -- REPLACE ECM Removal

B -- REPLACE ECM Removal
A -- Continue to next step.

5. CHECK SFI SYSTEM

(a) Check for DTCs of the SFI system.

for 2GR-FE DTC Check / Clear.

for 1AR-FE DTC Check / Clear.

Result





C -- GO TO SFI SYSTEM How to Proceed with Troubleshooting

B -- GO TO SFI SYSTEM How to Proceed with Troubleshooting
A -- Continue to next step.

6. CHECK BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

(a) Check that the correct brake actuator assembly (skid control ECU) is installed.

OK:

The correct brake actuator assembly (skid control ECU) is installed.

NG -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal
OK -- Continue to next step.

7. CHECK VEHICLE STABILITY CONTROL SYSTEM

(a) Check the vehicle stability control system Reading and Clearing Diagnostic Trouble Codes.

Result





B -- GO TO VEHICLE STABILITY CONTROL SYSTEM Vehicle Stability Control System

A -- REPLACE STEERING COLUMN ASSEMBLY Removal