C1A70

CRUISE CONTROL: LANE-KEEPING ASSIST SYSTEM: C1A70: Power Steering Control System
C1A70 - Power Steering Control System

DESCRIPTION

When the lane departure warning function operates, the driving support ECU sends a signal to the power steering control ECU to operate the steering motor.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC (POWER STEERING SYSTEM)

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

OK:

Power steering system DTC is not output.

HINT
If DTC C1A70 is output even after troubleshooting the power steering system, replace the driving support ECU.

NG -- GO TO POWER STEERING SYSTEM Power Steering System
OK -- Continue to next step.

2. REPLACE POWER STEERING CONTROL ECU

(a) Replace the power steering control ECU Removal.

NEXT -- Continue to next step.

3. CHECK DTC OUTPUT

(a) Using the Techstream, enter the following menus: All ECUs / Lane Keeping Assist / Trouble Codes.

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

(c) Turn the power switch off.

(d) Turn the power switch on (IG).

(e) Drive the vehicle at a speed of 50 km/h (31 mph) or more, and operate lane keeping assist control.

(f) Recheck for DTCs.

OK:

DTC C1A70 is not output.

NG -- REPLACE DRIVING SUPPORT ECU Removal

OK -- END