How To Proceed With Troubleshooting

AIR CONDITIONING: AIR CONDITIONING SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING

Techstream can be used in steps 3, 6, 7, 8 and 11.
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 THE DTCS
NEXT -- Continue to next step.

4. PROBLEM SYMPTOM CONFIRMATION
-- SYMPTOM OCCURS (GO TO STEP6)
-- SYMPTOM DOES NOT OCCUR (GO TO STEP5)
5. SYMPTOM SIMULATION
NEXT -- Continue to next step.

6. CHECK BODY MULTIPLEX COMMUNICATION SYSTEM
(a) Check for the DTC output.
-- MULTIPLEX DTC OUTPUTS (PROCEED TO "BODY MULTIPLEX COMMUNICATION SYSTEM")
-- NO MULTIPLEX DTC (GO TO STEP 7)
7. CHECK CAN COMMUNICATION SYSTEM
(a) Check for the DTC output.
-- CAN DTC OUTPUTS (PROCEED TO "CAN COMMUNICATION SYSTEM")
-- NO CAN DTC (GO TO STEP 8)
8. DTC CHECK (OTHER THAN MULTIPLEX DTC)
-- MALFUNCTION CODE (GO TO STEP 9)
-- NORMAL CODE (GO TO STEP 10)
9. DTC CHART
-- GO TO STEP 12
10. PROBLEM SYMPTOMS TABLE
NEXT -- Continue to next step.

11. ACTUATOR CHECK
NEXT -- Continue to next step.

12. CIRCUIT INSPECTION
NEXT -- Continue to next step.

13. PROBLEM IDENTIFICATION
NEXT -- Continue to next step.

14. PARTS INSPECTION
NEXT -- Continue to next step.

15. REPAIR
NEXT -- Continue to next step.

16. CONFIRMATION TEST
NEXT -- END