How To Proceed With Troubleshooting

LIGHTING: LIGHTING SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Use these procedures to troubleshoot the lighting system.
* *: Use the Techstream.
1. VEHICLE BROUGHT TO WORK SHOP

NEXT -- Continue to next step.

2. 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.

3. CHECK COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)*

(a) Use the Techstream to check if the multiplex communication system (MPX) is functioning normally.





B -- Go to MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.

4. CHECK FOR DTC*





B -- Go to DIAGNOSTIC TROUBLE CODE CHART
A -- Continue to next step.

5. PROBLEM SYMPTOMS TABLE





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

6. OVERALL ANALYSIS AND TROUBLESHOOTING

(a) Terminals of ECU Pinout Values and Diagnostic Parameters.

(b) DATA LIST / ACTIVE TEST Scan Tool Testing and Procedures.

(c) On-vehicle Inspection On-Vehicle Inspection.

NEXT -- Continue to next step.

7. REPAIR OR REPLACE

NEXT -- Continue to next step.

8. CONFIRMATION TEST

NEXT -- END