Checking Power Supply And Ground Terminals

Check the power supply cable for the transmission control module (TCM). Check for an intermittent open-circuit.

Check the transmission control module (TCM) connector. Check for damaged terminal pins. Check for contact resistance and oxidation.

Check the ground terminal between the transmission control module (TCM) and ground terminal. Check for an intermittent open-circuit. Check for contact resistance and oxidation.

Other information 

• see CHECKING WIRING AND TERMINALS

Fig 1: Identifying Ohms Display

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Transmission Control Module (TCM)

Courtesy of VOLVO CARS CORPORATION