Did you perform the DRL System Check?

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Go to Step 2

Go to Daytime Running Lights (DRL) System Check

Use the scan tool in order to read the current body control module (BCM) diagnostic trouble codes (DTCs).

Does the scan tool show any DTCs?

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Go to Diagnostic System Check - Body Control System in Body Control Systems

Go to Step 3

1. Disconnect the DRL relay.
2. Turn the ignition switch to the ON position. Do not start the engine.
3. Connect a fused jumper wire between the DRL relay terminals 3-5.

Do the DRLs illuminate?

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Go to Step 4

Go to Step 5

Replace the DRL relay.

Is the repair complete?

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Go to Daytime Running Lights (DRL) System Check

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Using the J 39200 DMM and the connector test adapter kit, test terminal 2 of the DRL relay socket in the underhood fuse block for voltage.

Is voltage present?

Battery Voltage

Go to Step 7

Go to Step 6

Replace the underhood fuse block.

Is the repair complete?

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Go to Daytime Running Lights (DRL) System Check

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1. Install the DRL relay.
2. Disconnect the headlamp grounding relay.
3. Disconnect the BCM connector C1.
4. Turn the ignition switch to the ON position. Do not start the engine.
5. Measure the voltage at connector C1 cavity A11.

Is voltage present?

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Go to Step 9

Go to Step 8

Locate and repair the open in CKT 592.

Is the repair complete?

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Go to Daytime Running Lights (DRL) System Check

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Replace the BCM. Refer to Body Control Module Replacement in Body Control System.

Is the repair complete?

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Go to Daytime Running Lights (DRL) System Check

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