Explorer 4WD V6-4.0L (2009)
Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Normal Operation
The scan tool is connected to the Data Link Connector (DLC) to communicate with the High Speed Controller Area Network (HS-CAN) and the
Medium Speed Controller Area Network (MS-CAN). Voltage for the scan tool is provided by circuit SBP04 (GN/RD). Ground is provided by circuits
GD108 (BK/VT) and GD138 (BK/WH).
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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DLC
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Scan tool
PINPOINT TEST U: NO POWER TO THE SCAN TOOL
NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint
test. See: Initial Inspection and Diagnostic Overview/Communications Network/Inspection And Verification
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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U1 CHECK THE DLC PINS FOR DAMAGE
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Disconnect the scan tool cable from the DLC.
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Inspect DLC pins 4, 5 and 16 for damage.
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Are DLC pins 4, 5 and 16 OK?
Yes
GO to U2.
No
REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
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U2 CHECK THE DLC VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
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Measure the voltage between the DLC C251-16, circuit SBP04 (GN/RD), harness side and ground.
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Is the voltage greater than 10 volts?
Yes
GO to U3.
No
VERIFY the Smart Junction Box (SJB) fuse 4 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to identify the
