How To Proceed With Troubleshooting

LIGHTING: LIGHTING SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- Use these procedures to troubleshoot the lighting system.
- *: Use the intelligent tester or Techstream.

1. VEHICLE BROUGHT TO WORKSHOP
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 COMMUNICATION SYSTEM*
(a) Check for DTCs and make a note of any codes that are output Lighting System.
(b) Clear the DTC.
(c) Recheck for DTCs. Based on the DTCs output above, try to cause the output of the same CAN communication system DTC, LIN communication DTC or lighting system DTC by simulating the symptoms indicated by the DTC.

Result:





B -- Go to CAN COMMUNICATION SYSTEM
C -- Go to LIN COMMUNICATION SYSTEM
D -- Go to DIAGNOSTIC TROUBLE CODE CHART
A -- Continue to next step.
4. PROBLEM SYMPTOMS TABLE

Result:





B -- Go to step 6
A -- Continue to next step.
5. OVERALL ANALYSIS AND TROUBLESHOOTING*
(a) Operation Check Component Tests and General Diagnostics.
(b) Terminals of ECU Pinout Values and Diagnostic Parameters.
(c) Data List / Active Test Scan Tool Testing and Procedures.
NEXT -- Continue to next step.
6. ADJUST, REPAIR OR REPLACE
NEXT -- Continue to next step.
7. CONFIRMATION TEST
NEXT -- END