Checking wiring and sensors

Check the transmission connector. Check for contact resistance and oxidation according to Contact resistance and oxidation .

Check the power supply cable between transmission control module (TCM) terminal #11 and terminal #2 on the black 2-pin transmission connector (control module side). Check for an intermittent open-circuit according to Open-circuit, permanent faults .

Check the signal cable between transmission control module (TCM) terminal #12 and terminal #1 on the black 2-pin transmission connector. Check for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

Other information: 

• To connect the breakout box, see Connecting the breakout box 
• To disconnect the transmission control module (TCM), see Replacing The Transmission Control Module (TCM)
• To disconnect the transmission connectors, see Transmission connectors
• To replace the transmission input speed sensor, see Replacing the engine speed (RPM) sensor
• For information about signals, see Signal description. Transmission control module (TCM) .

Fig 2: Identifying Breakout Box

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohms Display

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying Transmission Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Refer to Verification