Diagnosis System

Fig 1: Waveform Graph

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1. Lighting system data and the Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use Techstream to check for malfunctions and perform repairs.

1. Check the DLC3 (See HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS ).

Standard voltage: 

11 to 14 V 

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