MKS AWD V6-3.7L (2009)
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Connect all the DDM connectors and make sure they seat correctly.
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Operate the system and verify the concern is still present.
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Is the concern still present?
Yes
INSTALL a new DDM. 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 S: The Headlamp Control Module 2 (HCM-2) Does Not Respond To The Scan Tool
Communications Network
Pinpoint Tests
Pinpoint Test S: The Headlamp Control Module 2 (HCM-2) 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
Normal Operation
The Headlamp Control Module 2 (HCM-2) communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN)) and
circuits VDB06 (GY/OG) (MS-CAN +) and VDB07 (VT/OG) (MS-CAN -) provide the MS-CAN) connection to the HCM-2. Voltage for the HCM-2 is
provided by circuit CBP31 (BU/OG). Circuit GD133 (BK) 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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HCM-2
PINPOINT TEST S: THE HCM-2 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: The steps in this pinpoint test are carried out from the headlamp jumper harness connection, not the module itself.
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S1 CHECK THE HCM-2 VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
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Ignition OFF.
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Disconnect: Inline HCM-2 C913.
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Ignition ON.
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Measure the voltage between the inline HCM-2 C913-A, circuit CBP31 (BU/OG), harness (female) side and ground.
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Is the voltage greater than 10 volts?
Yes
GO to S2.
