Checking wiring and sensors

Check the voltage supply cable between the transmission control module (TCM) #A57 (#A57) and the speed sensor's connector #1 for open circuit. Checking wiring and terminals. Permanent fault

Check the signal cable between the transmission control module (TCM) #39 (#A39) and the speed sensor's connector #2 for open circuit. Checking wiring and terminals. Permanent fault

HINT: With the control module connected, the ignition on and a voltmeter connected between transmission output speed sensor connector terminals #1 and #2 (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:
  • For AW50-42 1999-, see Transmission output speed sensor, replacing .
  • For AW55-50 1999, see Transmission output speed sensor, replacing .
  • For 4T65 1999-, see Transmission output speed sensor, replacing .
• For information about signals, see Signal specification .

Fig 2: Identifying Vehicle Speed Sensor (VSS) Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohms Display

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying Automatic Transmission Control Module (TCM)

Courtesy of VOLVO CARS OF NORTH AMERICA.

Refer to Verification