How To Proceed With Troubleshooting

SUSPENSION CONTROL: AIR SUSPENSION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
*: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS

NEXT -- Continue to next step.

3. INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

NEXT -- Continue to next step.

4. CHECK AND CLEAR DTC*

(a) Check if any DTCs are output Air Suspension System.

HINT
The suspension control ECU of this system is connected to CAN communication system. Therefore, before starting troubleshooting, be sure to check that there is no trouble in CAN communication system.

Result





B -- GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) How to Proceed With Troubleshooting
A -- Continue to next step.

5. CHECK AND CLEAR DTC*

(a) Check for DTCs Air Suspension System.

NEXT -- Continue to next step.

6. PROBLEM SYMPTOM CONFIRMATION

Result





B -- Go to step 8
A -- Continue to next step.

7. SYMPTOM SIMULATION

NEXT -- Continue to next step.

8. CHECK DTC*

(a) Check for DTCs Air Suspension System.

Result





B -- Go to step 10
A -- Continue to next step.

9. PROBLEM SYMPTOMS TABLE

(a) Refer to the Problem Symptoms Table Air Suspension System.

NEXT -- Continue to next step.

10. DTC CHART

(a) Refer to the Diagnostic Trouble Code Chart Air Suspension System.

NEXT -- Continue to next step.

11. CIRCUIT INSPECTION*

NEXT -- Continue to next step.

12. IDENTIFICATION OF PROBLEM

NEXT -- Continue to next step.

13. REPAIR OR REPLACE

NEXT -- Continue to next step.

14. CONFIRMATION TEST

NEXT -- END