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Home >> Mercury >> 2006 >> Mountaineer 2WD V6-4.0L VIN E >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Pinpoint Tests >> Pinpoint Tests >> Test B: The Transmission Control Module (TCM) Does Not Respond To The Diagnostic Tool
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Test B: The Transmission Control Module (TCM) Does Not Respond To The Diagnostic Tool

PINPOINT TEST B: THE TRANSMISSION CONTROL MODULE (TCM) DOES NOT RESPOND TO THE DIAGNOSTIC TOOL


B1-B2:






B2-B3:






Normal Operation
The 6R60 transmission uses an internal TCM which is part of the metachromatic assembly. The TCM communicates with the diagnostic tool through the high speed controller area network (CAN), circuits VDB04 (WH/BU) and VDB05 (WH). Check the high speed CAN circuits between the TCM C199 and the data link connector (DLC) C251. The total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms there is an open in one of the high speed CAN circuits, damage to the DLC C251, damage to the TCM C199, or a problem in an in-line connector.

Possible Causes
- high speed CAN data plus circuit VDB04 (WH/BU) open
- high speed CAN data minus circuit VDB05 (WH) open
- TCM C199
- TCM
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