F 150 4WD V8-4.6L VIN 8 (2010)
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Ignition ON.
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Measure the voltage between the FCIM C2402-1, circuit SBP26 (YE/RD), harness side and ground.
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Is the voltage greater than 10 volts?
Yes
GO to M2.
No
VERIFY the Smart Junction Box (SJB) fuse 26 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams to
identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool. See: Diagrams/Electrical
Diagrams/Diagrams By Number
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M2 CHECK THE FCIM GROUND CIRCUIT FOR AN OPEN
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Ignition OFF.
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Disconnect: Negative Battery Cable.
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Measure the resistance between the FCIM C2402-4, circuit GD133 (BK), harness side and ground.
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Is the resistance less than 5 ohms?
Yes
For vehicles without a navigation ACM, GO to M3.
For vehicles with a navigation ACM, GO to M4.
