Diesel Data: Automotive Repair

Daytime Running Light No. 4 Relay Circuit

DAYTIME RUNNING LIGHT NO. 4 RELAY CIRCUIT

CIRCUIT DESCRIPTION
When the light control switch is set to OFF or TAIL after the following conditions are satisfied simultaneously with the ignition switch ON, the headlight comes on by control of the body ECU.
- The parking brake switch is OFF.
- The generator is ON (Engine running).

Wiring Diagram:




Wiring Diagram:






Step 1 - 2:




INSPECTION PROCEDURE