Checking wiring

Check the signal cables between engine control module (ECM) terminals 57 and 27 and transmission control module (TCM) terminals 14 and 27. Check for a short-circuit to ground according to Short-circuit to ground, permanent faults . Check for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults . Check for a short-circuit to each other and for open-circuits according to Open-circuit, permanent faults . Remedy if necessary.

If no problem is found in above troubleshooting, try changing Transmission control module (TCM).

Fig 1: Identifying EMS2000

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Transmission Control Module (TCM) Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.