Checking wiring and components

Fig 1: Identifying Ignition Off Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.

  Check the cable between control module #A52 and transmission connector (control module side) #24 for an open-circuit according to Open-circuit, permanent faults .

  Check cable between control module #A70 (#B10) and transmission connector (control module side) #25 for a short-circuit to an open circuit according to Open-circuit, permanent faults .

  Check the wiring between solenoid STH connector and transmission connectors #24 and #25 for a short-circuit to ground according to Open-circuit, permanent faults .

  HINT: With the ignition on, the control module connected and the transmission connector disconnected, the voltage between transmission connector #24 and ground should be battery voltage. The voltage between transmission connector #25 and ground should be 0 V. 

  Remedy as necessary.

  Other information: 

  • To connect the breakout box, see Connecting breakout box, Transmission control module (TCM) .
  • To disconnect transmission connector, see Inspecting/cable harness to solenoids .
  • To check/replace line pressure solenoid STH, see Inspecting/replacing solenoids .
  • For information about signals, see Signal specification, Transmission control module (TCM) .
  Fig 2: Identifying Control Module

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Identifying Ohmmeter

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected? 

• YES 

  Refer to Resetting the adaptation 

• NO 

  FAULT NOT FOUND:  Troubleshooting has been completed.