Checking wiring and sensors

Check the power supply cable between transmission control module (TCM) terminal #A57 (#A57)and transmission output speed sensor terminal #A4. Check for an open-circuit according to Open-circuit, permanent faults .

Check the signal cable between transmission control module (TCM) terminal #A39 (#A39) and transmission output speed sensor terminal #A3. Check for an open-circuit according to Open-circuit, permanent faults .

HINT: With the control module connected, the ignition on and a voltmeter connected between transmission output speed sensor terminals #A3 and #A4 (control module side), the voltage must be approximately 1-3 V below Ubat. 

Remedy as necessary.

Other information: 

• To connect the breakout box, see Connecting the breakout box
• To disconnect the transmission control module (TCM), see Transmission control module (TCM), replacing
• To check or replace the transmission output speed sensor, see Replacing the transmission input speed sensor and the transmission output speed sensor
• For information about signals, see Signal description. Transmission control module (TCM) .

Fig 2: Identifying Transmission Speed Sensor Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Refer to Verification