Explorer Sport Trac 2WD V6-4.0L (2009)
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Is the concern still present?
Yes
INSTALL a new HVAC module. CLEAR the DTCs. REPEAT the network test with the scan tool.
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
network test with the scan tool.
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Pinpoint Test J: The Audio Control Module (ACM) Does Not Respond To The Scan Tool
Communications Network
Pinpoint Tests
Pinpoint Test J: The Audio Control Module (ACM) Does Not Respond To The Scan Tool
Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 130, Audio System/Navigation for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By
Number
Normal Operation
Circuits VDB06 (GY/OG) (MS-CAN +) and VDB07 (VT/OG) (MS-CAN -) provide the network connection to the Audio Control Module (ACM).
Voltage for the ACM is provided by circuits CBP12 (GN/WH) and SBP03 (BU/RD). Circuit GD114 (BK/BU) provides ground.
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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ACM
PINPOINT TEST J: THE ACM 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.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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J1 CHECK THE ACM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
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Ignition OFF.
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Disconnect: ACM C290a.
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Ignition ON.
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Measure the voltage between the ACM C290a-1, circuit SBP03 (BU/RD), harness side and ground; and between the ACM C290a-2, circuit
CBP12 (GN/WH), harness side and ground.
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Are the voltages greater than 10 volts?
Yes
