Mariner 2WD L4-2.5L (2009)
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Is the concern still present?
Yes
INSTALL a new SJB. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the
self-test.
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Pinpoint Test P: One Or More Parking, Rear Or License Plate Lamps Are Inoperative
Parking, Rear and License Plate Lamps
Pinpoint Tests
Pinpoint Test P: One Or More Parking, Rear or License Plate Lamps Are Inoperative
Refer to Wiring Diagram Set 92 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Parking, Rear and License Lamps for schematic and connector
information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
When the headlamp switch is placed in the PARKING LAMPS ON position, the Smart Junction Box (SJB) energizes the parking lamp relay (integrated
into the SJB). When the parking lamp relay is energized, voltage is routed through circuit CLS30 (VT/WH) to the rear and front parking lamps. Ground
is provided to the rear parking and license plate lamps through circuit GD149 (BK/GY). Ground is provided to the front parking and side marker lamps
through circuit GD120 (BK/GN).
This pinpoint test is intended to diagnose the following:
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Fuse
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Wiring, terminals or connectors
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Bulb holder
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SJB
PINPOINT TEST P: ONE OR MORE PARKING, REAR OR LICENSE PLATE LAMPS ARE INOPERATIVE
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
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P1 DETERMINE IF ALL THE PARKING LAMPS ARE INOPERATIVE
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Ignition OFF.
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Place the headlamp switch to the PARKING LAMPS ON position.
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Are all the parking lamps inoperative?
Yes
PLACE the headlamp switch in the OFF position. VERIFY the SJB fuse 22 (15A) is OK. If OK, GO to P6. If not OK, REFER to the Wiring Diagrams
to identify the possible causes of the circuit short.
No
If all the front parking lamps are inoperative, GO to P2.
If all the rear parking and license plate lamps are inoperative, GO to P3.
For all others, GO to P4.
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P2 CHECK THE SJB FRONT PARKING LAMPS OUTPUT CIRCUIT FOR AN OPEN (REAR LAMPS)