Diagnostic Procedure

STEP 1. Scan tool (M.U.T.-III) data list
Check the following data list (Refer to DATA LIST REFERENCE TABLE ).
- Item No. 408: Filler lid Open SW/ECO mode SW
Q: Is the check result normal?
1. YES: Go to Step 4.
2. NO: Go to Step 2.
STEP 2. Follow the ETACS-ECU trouble symptom procedure "The hazard indicator assembly (ECO mode switch) signal is not received."
Refer to TROUBLE SYMPTOM CHART FOR INPUT SIGNAL .

Q: Is the check result normal?
1. YES: Go to Step 4.
2. NO: Repair it. Then go to Step 3.
STEP 3. Retest the system.
Q: Does the malfunction occur again?
1. YES: Go to Step 4.
2. NO: This diagnosis is complete.
STEP 4. Scan tool (M.U.T.-III) DTC.
Check whether an ETACS-related DTC is stored in the AWC-ECU (Refer to SERVICE SPECIFICATIONS ).

Q: Is the DTC stored?
1. YES: Perform the relevant troubleshooting. Then go to Step 5.
2. NO: Go to Step 5.
STEP 5. Retest the system.
Q: Does the malfunction occur again?
1. YES: Diagnose again from Step 1.
2. NO: This diagnosis is complete.