Milan FWD L4-2.5L (2010)
Brake Lamp: Pinpoint Tests
Pinpoint Test I: All The Stoplamps Are Inoperative
Stoplamps
Pinpoint Tests
Pinpoint Test I: All The Stoplamps Are Inoperative
Refer to Wiring Diagram Set 90 (Fusion/Milan/MKZ, Fusion Hybrid/Milan Hybrid), Turn Signal/Stop/Hazard Lamps for schematic and connector
information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
The stoplamp switch is supplied voltage from the Smart Junction Box (SJB) fuse 2 (15A). When the brake pedal is applied, the stoplamp switch routes
voltage to the stoplamps and the SJB.
This pinpoint test is intended to diagnose the following:
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Fuse
-
Wiring, terminals or connectors
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Stoplamp switch
-
SJB
PINPOINT TEST I: ALL THE STOPLAMPS ARE INOPERATIVE
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
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I1 CHECK FOR VOLTAGE TO THE STOPLAMP SWITCH
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Ignition OFF.
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Disconnect: Stoplamp Switch C278.
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Measure the voltage between the stoplamp switch C278-1, circuit SBP02 (YE/RD), harness side and ground.
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Is the voltage greater than 10 volts?
Yes
GO to I2.
No
VERIFY the SJB fuse 2 (15A) is OK. If OK, GO to I3. 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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I2 BYPASS THE STOPLAMP SWITCH