Explorer Sport Trac 2WD V6-4.0L (2009)
Yes
INSTALL a new SJB. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the
self-test.
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Pinpoint Test H: All The Stoplamps Are Inoperative
Stoplamps
Pinpoint Tests
Pinpoint Test H: All The Stoplamps Are Inoperative
Refer to Wiring Diagram Set 90, 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 through circuit SBP22 (BN/RD) from the Smart Junction Box (SJB). When the brake pedal is applied, the
stoplamp switch routes voltage to the SJB through circuit CCB08 (VT/WH) which then supplies voltage to all the stoplamps.
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
-
Stoplamp switch
-
SJB
PINPOINT TEST H: 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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H1 CHECK CIRCUIT SBP22 (BN/RD) FOR VOLTAGE
-
Ignition OFF.
-
Disconnect: Stoplamp Switch C278.
-
Measure the voltage between the stoplamp switch C278-1, circuit SBP22 (BN/RD), harness side and ground.
-
Is the voltage greater than 10 volts?
Yes
GO to H3.
No
VERIFY the SJB fuse 22 (15A) is OK. If OK, GO to H2. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short.
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H2 CHECK CIRCUIT SBP22 (BN/RD) FOR AN OPEN