Mountaineer 2WD V8-4.6L (2010)
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H5 CHECK FOR CORRECT SJB OPERATION
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Disconnect all the SJB connectors.
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Check for:
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corrosion
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damaged pins
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pushed-out pins
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Connect all the SJB connectors and make sure they seat correctly.
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Operate the system and verify the concern is still present.
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Is the concern still present?
Yes
INSTALL a new SJB. REFER to Body Control Systems. 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.
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Pinpoint Test I: One Or More Stoplamps Are Inoperative
Stoplamps
Pinpoint Tests
Pinpoint Test I: One Or More Stoplamps Are Inoperative
Refer to Wiring Diagram Set 90, Turn Signal/Stop/Hazard Lamps for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Normal Operation
When the brake pedal is applied, the stoplamp switch routes voltage to the Smart Junction Box (SJB). The voltage is then routed through the SJB to the
high mounted stoplamp.
For Explorer and Explorer Sport Trac, the SJB provides voltage on independent output circuits to the LH and RH stoplamps.
For Mountaineer, the SJB provides voltage to both rear stoplamps on a single output circuit.
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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High mounted stoplamp
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LED module
