Checking the wiring

Fig 1: Identifying Ignition OFF

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Fig 2: Identifying Connectors

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Fig 3: Identifying Control Module Disconnected

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• Ignition off
• Connect the breakout box to the transmission
• Disconnect the control module
• Disconnect the transmission connector
• Connect adapter 9511505 and breakout box 9813190 to the transmission connector (control module side).

  Check the cable between control module terminal #A50 (#A50) and transmission connector terminal #A (#A1). Check for an open-circuit. See Open-circuit, permanent faults .

  Check the cable between control module terminal #A53 and transmission connector terminal #E (#A5). Check for an open-circuit. See Open-circuit, permanent faults .

  Remedy as necessary.

  Other information: 

  • To connect the breakout box, 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 .
  Fig 4: Identifying Breakout Box

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 5: Identifying Ohms Display

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Was a fault detected? 

• YES 

  Refer to Verification 

• NO 

  Refer to Checking the control module