MKS AWD V6-3.7L (2009)
Communications Network
Pinpoint Tests
Pinpoint Test N: The Front Display Interface Module (FDIM) 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
NOTE: Vehicles equipped with a navigation Audio Control Module (ACM) have a non-networked Front Display Interface Module (FDIM), which does
not communicate with the scan tool.
Normal Operation
The FDIM communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN). Circuits VDB06 (GY/OG) (MS-CAN +)
and VDB07 (VT/OG) (MS-CAN -) provide the network connection to the FDIM. Voltage to the FDIM is provided by circuit SBP16 (VT/RD). Ground
is provided by circuit GD114 (BK/BU).
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
-
FDIM
PINPOINT TEST N: THE FDIM 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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N1 CHECK THE FDIM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
-
Ignition OFF.
-
Disconnect: FDIM C2123.
-
Ignition ON.
-
Measure the voltage between the FDIM C2123-12, circuit SBP16 (VT/RD), harness side and ground.
-
Is the voltage greater than 10 volts?
Yes
GO to N2.
No
VERIFY the Smart Junction Box (SJB) fuse 14 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to identify the
possible causes of the short circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
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N2 CHECK THE FDIM GROUND CIRCUIT FOR AN OPEN
-
Ignition OFF.
-
Measure the resistance between the FDIM C2123-8, circuit GD114 (BK/BU), harness side and ground.
