Mountaineer AWD V8-4.6L (2010)
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Is the resistance greater than 10,000 ohms?
Yes
GO to I15.
No
VERIFY the SJB fuse 22 (15A) is OK. If OK, REPAIR the circuit in question for a short to ground. RUN the on-demand self-test (required to clear
certain DTCs). CORRECT any unresolved DTCs. CLEAR all DTCs. TEST the system for normal operation. If not OK, REFER to the Wiring Diagrams
to identify the possible causes of the circuit short. See: Diagrams/Electrical Diagrams/Diagrams By Number
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I7 DETERMINE THE INOPERATIVE STOPLAMP
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Ignition OFF.
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Apply the brake pedal.
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Verify the high mounted stoplamp operation.
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Is the high mounted stoplamp illuminated?
Yes
If one rear stoplamp is inoperative, GO to I11.
For Mountaineer, if both rear stoplamps are inoperative, GO to I13.
For Explorer Sport Trac, if both rear stoplamps are inoperative, GO to I14.
For Explorer, if both rear stoplamps are inoperative, GO to I15.
No
GO to I8.
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I8 CHECK FOR VOLTAGE TO THE HIGH MOUNTED STOPLAMP
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For Explorer or Mountaineer, while applying the brake pedal, measure the voltage between the high mounted stoplamp C475-1, circuit CCB08
(VT/WH), harness side and ground.
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For Explorer Sport Trac, while applying the brake pedal, measure the voltage between the high mounted stoplamp C927-3, circuit CCB08
(VT/WH), harness side and ground.
