Explorer AWD V8-4.6L (2010)
Number
Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Normal Operation
The Smart Junction Box (SJB) communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN).
This pinpoint test is intended to diagnose the following:
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Fuse
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Wiring, terminals or connectors
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SJB
PINPOINT TEST H: THE SJB DOES NOT RESPOND TO THE SCAN TOOL
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 THE SJB FUSE FOR VOLTAGE
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Ignition OFF.
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NOTE: Measurements are taken with the fuses installed.
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Measure the voltage between the SJB fuse 2 (5A) and ground.
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Are the voltages greater than 10 volts?
Yes
GO to H3.
No
VERIFY the Smart Junction Box (SJB) fuse 2 (5A) is OK. If OK, GO to H2. 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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H2 CHECK THE SJB VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
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Disconnect: SJB C2280e.
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Measure the voltage between the SJB C2280e-1, circuit SBB03 (BU/RD), harness side and ground.
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Is the voltage greater than 10 volts?
Yes
GO to H5.
