How To Proceed With Troubleshooting

AIR CONDITIONING: AIR CONDITIONING SYSTEM: 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