4WAS Warning Lamp

4WAS WARNING LAMP





Diagnosis Procedure
1.PERFORM UNIFIED METER AND A/C AMP. SELF-DIAGNOSIS
With CONSULT-III
Perform the self-diagnosis for "METER/M&A".
Is any error system detected?
YES - Check the error system. Testing and Inspection.
NO - GO TO 2.
2.PERFORM SELF-DIAGNOSIS (4WAS MAIN CONTROL UNIT)
With CONSULT-III
Perform self-diagnosis for "4WAS(MAIN)/RAS/HICAS".
Is DTC "U1000" or "U1010" detected?
YES - Check the error system. Steering Control System With 4WAS (U1000), Steering Control System With 4WAS (U1010).
NO - GO TO 3.
3.CHECK 4WAS WARNING LAMP SIGNAL
With CONSULT-III
1. Turn the ignition switch ON.

CAUTION:
Never start the engine.
2. Check "WARNING LAMP" item on DATA MONITOR for "4WAS(MAIN)/RAS/HICAS".
Does the item on "DATA MONITOR" indicate "On"?
YES - GO TO 4.
NO - Replace 4WAS main control unit. 4WAS Main Control Unit.
- Before replacing 4WAS main control unit, record the self-diagnosis results(history). SEE Special Repair Requirement.
4.CHECK COMBINATION METER
With CONSULT-III
Perform the trouble diagnosis of the combination meter. Power Supply And Ground Circuit.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace the combination meter. Removal And Installation.




Special Repair Requirement
Before replacing 4WAS main control unit, record the self-diagnosis results (history).

CAUTION:
- Never erase the memory (history) of self-diagnosis results when replacing 4WAS main control unit after diagnosis.
- Erase the memory of the self-diagnosis results (record) after printing out or recording all the values of "DATA MONITOR".