Checking the components and wiring

Check the communication cable (LIN) between transmission control module (TCM) #A7 and gear selector module (GSM) #2 for open circuit and short-circuit to ground or voltage.

If no fault can be found in the cable and the fault remains try replacing the printed circuit board (gear selector module (GSM)

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 Changer

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Verification