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 of the unified meter and A/C amp.
Is any error system detected?
YES - Check the error system.
NO - GO TO 2.
2.PERFORM SELF-DIAGNOSIS (4WAS MAIN CONTROL UNIT)
With CONSULT-III
Perform 4WAS main control unit self-diagnosis.
Is DTC "U1000" or "U1010" detected?
YES - Check the error system.
NO - GO TO 3.
3.PERFORM COMBINATION METER CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the unified meter and A/C amp. harness connector.
3. Disconnect the combination meter harness connector.
4. Check the continuity between the unified meter and A/C amp. harness connector and the combination meter harness connector terminal.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace the harnesses and connectors.
4.CHECK 4WAS WARNING LAMP SIGNAL
With CONSULT-III
1. Connect the unified meter and A/C amp. harness connector.
2. Connect the combination meter harness connector.
3. Disconnect 4WAS front control unit harness connector.
4. Turn the ignition switch ON.

CAUTION:
Never start the engine.
5. Check "WARNING LAMP" item on DATA MONITOR of 4WAS main control unit.
Does the item on "DATA MONITOR" indicate "On"?
YES - GO TO 5.
NO - Replace 4WAS main control unit. Refer to Exploded View.
5.CHECK COMBINATION METER
With CONSULT-III
Perform the trouble diagnosis of the combination meter. Refer to Combination Meter.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace the combination meter. Refer to Exploded View.