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The operation or the DRL is controlled by the DRL control module. The DRL control module receives battery positive voltage from the DRL 15 A fuse in the IP fuse block. The DRL module is grounded at G201.

The headlamp and park brake switches must be OFF and the ignition switch must be in the RUN position in order for the DRL to illuminate. To determine control to the DRL the DRL module uses the following inputs:
- Ignition 1 voltage circuit
- Headlamp high beam supply voltage circuit
- Headlamp low beam supply voltage circuit
- Park brake switch signal circuit
- Park lamp supply voltage circuit

The DRL module turns on the front DRL by suppling a specific voltage to the headlamp low beam supply circuit. The DRL control module turns on the rear DRL by grounding the DRL relay control circuit, and supplying voltage to the park lamp supply voltage circuit through the DRL rear park lamp relay to the rear park lamps. The DRL rear park lamp relay receives voltage on the coil side from the GAGES 10 A fuse 14 in the IP fuse block.

The DRL module also turns on the brake warning indicator by grounding the brake warning indicator control circuit.