Checking the wiring

Check if there are any external sources of interference near the communication cable (LIN) between the transmission control module (TCM) terminal #A7 and gear selector module (GSM) terminal #2 which can disturb communication.

Check the communication cable (LIN) between the transmission control module (TCM) terminal #A7 and gear selector module (GSM) terminal #2. Check for intermittent short circuits. Check for intermittent open-circuits.

Other information 

• See Connecting the breakout box
• See Signal description
• See Printed circuit board gear selector assembly/top panel, replacing
• See Checking wiring and terminals

Fig 1: Transmission Control Module Connector Terminal Identification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Automatic Transmission Gear Shifter With Manual Gear Change

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Verification