C1A71

CRUISE CONTROL: LANE-KEEPING ASSIST SYSTEM: C1A71: Power Steering Control Torque
C1A71 - Power Steering Control Torque

DESCRIPTION

When the lane keeping assist system operates, the driving support ECU sends a signal to the power steering ECU to operate the power steering motor.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC (POWER STEERING SYSTEM)

(a) Check for DTCs Power Steering System.

OK:

Power steering system DTCs are not output.

NG -- GO TO POWER STEERING SYSTEM How To Proceed With Troubleshooting
OK -- Continue to next step.

2. CHECK FOR DTC

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

HINT
If the detection conditions are not met, the system cannot detect the malfunction.

(1) Drive the vehicle at a 50 km/h (31 mph) or more, and operate lane-keeping assist system.

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

OK:

DTC C1A71 is not output.

NG -- REPLACE DRIVING SUPPORT ECU Removal

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting