Checking The Control Module

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Connector(s) Disconnected

Courtesy of VOLVO CARS CORPORATION

• Ignition off
• Breakout box connected to the control module
• Transmission connector disconnected
• Connect adapter see 9511505 and breakout box see 9813190 to the transmission connector (transmission side)
• Ignition on
• Read off the status for the inputs to the gear-shift position sensor (A, B, C, PA).

  Check that the status is HIGH for all inputs to the gear-shift position sensor (A, B, C, PA).

  Ignition off.

  Temporarily connect a cable between the connector for the transmission (transmission side) terminal #A53 (#A53) and the transmission connector (control module side), see terminals according to the table.

  Input	Control module connection
  A	#A46 (#A46)
  B	#A64 (#B4)
  C	#A45 (#A45)
  PA	#A63 (#B3)

  CAUTION:

  Carefully check that the correct terminals are connected.

  Also check that there is no risk of short-circuits.

  Ignition on.

  Check that the status of the inputs for the gear-shift position sensor change to LOW when reading off the status.

  Read off the status after every new connection.

  The control module is defective if the status does not change. If this is the case replace the control module.

  Other information 

  • To connect the breakout box to the control module, see CONNECTING THE BREAKOUT BOX
  • To connect the breakout box to the transmission connector, see CONNECTING THE BREAKOUT BOX, GM AUTOMATIC TRANSMISSIONS
  • For information about signals, see SIGNAL SPECIFICATION
  • To access or replace the control module, see TRANSMISSION CONTROL MODULE (TCM), REPLACING .
  Fig 3: Identifying Breakout Box

  Courtesy of VOLVO CARS CORPORATION
  Fig 4: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS CORPORATION

Was the control module defective? 

• YES 

  Refer to VERIFICATION 

• NO 

  Refer to CHECKING THE WIRING AND COMPONENT