F 550 4WD Super Duty V10-6.8L (2009)
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Are the resistances greater than 5,000 ohms?
Yes
CONNECT all modules. CONNECT the negative battery cable. GO to V37.
No
If the vehicle is equipped with an RETM, GO to V28.
If the vehicle is not equipped with an RETM, GO to V29.
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V28 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE RETM DISCONNECTED
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Disconnect: RETM C949.
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Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-11, circuit
VDB07 (VT/OG), harness side and ground.
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Are the resistances greater than 5,000 ohms?
Yes
CONNECT all modules. CONNECT the negative battery cable. GO to V38.
No
GO to V29.
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V29 VERIFY VEHICLE OPTION CONTENT - CDIM
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Verify the vehicle for a CDIM. This module is present on some diesel engine vehicles.
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Is the vehicle equipped with a CDIM?
Yes
GO to V30.
No
REPAIR the circuits. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
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V30 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE CDIM DISCONNECTED
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Disconnect: CDIM C2500.
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Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-11, circuit
VDB07 (VT/OG), harness side and ground.
