Were you sent here from the Headlights: Daytime Running Lamps (DRL) Diagnostic System Check?

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Go to Step 2

Go to DRL Diagnostic System Check

1. Disconnect the inoperative (low/high) headlamp connector.
2. Connect a DMM between the headlamp connector terminal E and ground.
3. Measure the resistance to ground in CKT 150 from terminal E of the headlamp connector.

Is the resistance to ground within the specified values?

0-3ohms

Go to Step 4

Go to Step 3

Repair a poor connection or an open in CKT 150 between the headlamp connector terminal E and:

Is the repair completed?

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Go to DRL Diagnostic System Check

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1. Connect the DMM between the inoperative headlamp connector terminal:

•	Low Beam=terminal C

•	High Beam=terminal D

2. Turn the headlamp switch to the ON position (headlamps ON).
3. Position the headlamp dimmer switch to either high or low beam depending on which headlamp circuit is being tested.
4. Measure the voltage at the headlamp connector.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 5

Go to Step 6

Replace the inoperative headlamp bulb.

Is the repair complete?

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Go to DRL Diagnostic System Check

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Inspect the fuse at the underhood electrical center relative to the headlamp circuit being tested.

Is the related fuse open?

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Go to Step 7

Go to Step 8

Repair the short to ground in the circuit relative to the inoperative headlamp.

Is the repair complete?

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Go to DRL Diagnostic System Check

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1. Remove the fuse relative to the inoperative (low/high) headlamp.
2. Connect a DMM between the underhood electrical center terminal and ground.
3. Measure the voltage at terminal A.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 9

Go to Step 10

Repair the open in the circuit relative to the inoperative headlamp.

Is the repair complete?

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Go to DRL Diagnostic System Check

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Replace the underhood electrical center.

Is the repair complete?

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Go to DRL Diagnostic System Check

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