Ranger 2WD V6-4.0L (2010)
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Do the stoplamps illuminate?
Yes
REMOVE the jumper wire. INSTALL a new stoplamp switch. REFER to Stoplamp Switch See: Brake Light Switch/Service and Repair. TEST the
system for normal operation.
No
REMOVE the jumper wire. REPAIR circuit CCB08 (VT/WH) for an open. TEST the system for normal operation.
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G5 CHECK FOR VOLTAGE TO THE HIGH MOUNTED STOPLAMP
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Disconnect: High Mounted Stoplamp C904.
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While applying the brake pedal, measure the voltage between the high mounted stoplamp C904-2, circuit CCB08 (VT/WH), harness side and
ground.
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Is the voltage greater than 10 volts?
Yes
GO to G6.
No
REPAIR the circuit. TEST the system for normal operation.
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G6 CHECK THE HIGH MOUNTED STOPLAMP GROUND CIRCUIT FOR AN OPEN
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Disconnect: Negative Battery Cable.
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Measure the resistance between the high mounted stoplamp C904-1, circuit GD161 (BK/YE), harness side and ground.
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Is the resistance less than 5 ohms?
Yes
INSTALL a new high mounted stoplamp. TEST the system for normal operation.
No
REPAIR circuit GD161 (BK/YE) for an open. TEST the system for normal operation.
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