Navigator 4WD V8-5.4L (2010)
Daytime Running Lamp: Pinpoint Tests
Daytime Running Lamps (DRL)
Pinpoint Tests
Pinpoint Test AF: The Daytime Running Lamps (DRL) Are Inoperative
Normal Operation
When the ignition switch is in the RUN position, the headlamps are not on (from the autolamp system or manual control from the headlamp switch), and
the transmission is not in PARK (P), the Smart Junction Box (SJB) illuminates the headlamps at a reduced intensity.
This pinpoint test is intended to diagnose the following:
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Exterior lighting system input/output
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SJB configuration
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Ignition switch input
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Transmission gear input
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SJB
PINPOINT TEST AF: THE DRL ARE INOPERATIVE
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AF1 VERIFY THE DRL OPERATION
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Ignition ON.
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Make sure the headlamp switch is in the OFF position.
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Place the gear selector lever in any gear other than PARK (P).
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Do the DRL illuminate?
Yes
The system is operating correctly. INFORM the customer of the conditions required for the DRL to operate correctly.
No
GO to AF2.
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AF2 CHECK THE OPERATION OF THE HEADLAMPS
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Place the headlamp switch in the HEADLAMPS ON position and observe the headlamps.
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Do the headlamps operate correctly?
Yes
GO to AF3.
No
REFER to Headlamps. See: Headlamp/Testing and Inspection
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AF3 CHECK THE IGNITION SWITCH INPUT
