Fusion AWD V6-3.0L (2009)
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
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Stoplamp switch
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SJB
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PCM
PINPOINT TEST L: THE STOPLAMPS ARE ON CONTINUOUSLY
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L1 DETERMINE IF ALL THE STOPLAMPS ARE ILLUMINATED
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Ignition OFF.
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Observe the stoplamps with the brake pedal released.
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Are all of the stoplamps illuminated?
Yes
GO to L2.
No
GO to L6.
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L2 CHECK THE STOPLAMP SWITCH
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Disconnect: Stoplamp Switch C278.
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Do the stoplamps continue to illuminate?
Yes
GO to L3.
No
INSTALL a new stoplamp switch. REFER to Stoplamp Switch See: Brake Light Switch/Service and Repair. CLEAR the DTCs. REPEAT the self-test.
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L3 CHECK THE PCM
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Disconnect: PCM C175b.
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Do the stoplamps continue to illuminate?
Yes
GO to L4.
No
GO to L8.
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L4 CHECK CIRCUIT CCB08 (VT/WH) FOR A SHORT TO VOLTAGE
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Disconnect: SJB C2280a.
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Do the stoplamps continue to illuminate?
Yes
For Fusion, GO to L5.
For Milan or MKZ, GO to L7.
No
