How to Proceed With Troubleshooting

AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. CUSTOMER PROBLEM ANALYSIS
(a) Confirm problem symptoms.
NEXT -- Continue to next step.
3. CHECK AND CLEAR DTCS
NEXT -- Continue to next step.
4. PROBLEM SYMPTOM CONFIRMATION
-- SYMPTOM DOES NOT OCCUR (GO TO STEP 5)
-- SYMPTOM OCCURS (GO TO STEP 6)
5. SYMPTOM SIMULATION
NEXT -- Continue to next step.
6. DTC CHECK (OTHER THAN MULTIPLEX DTC)
-- TROUBLE CODE (GO TO STEP 7)
-- NORMAL SYSTEM CODE (GO TO STEP 8)
7. DTC CHART
-- GO TO STEP 10
8. PROBLEM SYMPTOMS TABLE
NEXT -- Continue to next step.
9. TERMINALS OF ECU
NEXT -- Continue to next step.
10. CIRCUIT INSPECTION
NEXT -- Continue to next step.
11. IDENTIFICATION OF PROBLEM
NEXT -- Continue to next step.
12. REPAIR OR REPLACE
NEXT -- Continue to next step.
13. CONFIRMATION TEST
NEXT -- END