Mountaineer AWD V8-4.6L (2010)
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Is the voltage greater than 10 volts?
Yes
GO to I9.
No
GO to I10.
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I9 CHECK THE HIGH MOUNTED STOPLAMP GROUND CIRCUIT FOR AN OPEN
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Disconnect: High Mounted Stoplamp C475 (Explorer, Mountaineer) or C927 (Explorer Sport Trac).
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For Explorer or Mountaineer, measure the voltage between the high mounted stoplamp C475-1, circuit CCB08 (VT/WH), harness side and the
high mounted stoplamp C475-2, circuit GD149 (BK/GY), harness side.
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For Explorer Sport Trac, measure the voltage between the high mounted stoplamp C927-3, circuit CCB08 (VT/WH), harness side and the high
mounted stoplamp C927-1, circuit GD133 (BK), harness side.
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Is the voltage greater than 10 volts?
Yes
INSTALL a new high mounted stoplamp. TEST the system for normal operation.
No
REPAIR circuit GD149 (BK/GY) or circuit GD133 (BK) for an open. TEST the system for normal operation.
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I10 CHECK THE HIGH MOUNTED STOPLAMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
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Disconnect: SJB C2280a.
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For Explorer or Mountaineer, measure the resistance between the high mounted stoplamp C475-1, circuit CCB08 (VT/WH), harness side and the
SJB C2280a-15, circuit CCB08 (VT/WH), harness side.
