The DRL is usually a high beam run at about 80%. Do both high beam bulbs work? If not, replace the bad one. If they do work as high beams but not as DRLs, replace the DRL relay.
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Action
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Yes
No
DEFINITION: This diagnostic procedure should only be used if the high beam headlamps are operating properly and the low beams are inoperative.
1
Did you perform the Headlights System Check?
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Go to Step 2
Go to Headlight System Check
2
Does the test lamp light?
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Go to Step 3
Go to Step 5
3
Does the test lamp light?
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Go to Step 4
Go to Step 6
4
Does the test lamp light?
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Go to Step 7
Go to Step 8
5
Replace the headlamp dimmer switch.
Is the repair complete?
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Go to Headlight System Check
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6
Repair the open in CKT 359 (PPL) between the headlamp dimmer switch and the daytime running lamp relay.
Is the repair complete?
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Go to Headlight System Check
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7
Replace the high/low beam headlamps.
Is the repair complete?
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Go to Headlight System Check
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8
Is the repair complete?
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Go to Headlight System Check
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the drl is also the blinker...not the high beam
Light bulb is good.. both filaments are working. One strange thing..Sometimes the turn signal arrows on the dash illuminate when I release the parking brake. They stay on all the time and the drl works. The park lights in the rear are also on all the time. When this happens, the blinkers work fine. Sometimes when this is not happening, I lose the left drl, but blinker works. Rear park lights go off. What a mess.
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