Checking ground terminals

Fig 1: Identifying Ignition Off Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Control Module Disconnected

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Control module disconnected.
• Turn of all equipment in the car that takes power from the battery (the interior lighting and radio etc).

  Connect an ohmmeter between the battery negative terminal and:

  #20 (#A20) on the breakout box

  #29 (#A29) on the breakout box.

  Fig 3: Breakout Box

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 4: Ohmmeter

  Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should read approximately 0Ω for all readings 

• OK 

  Refer to Checking signal cable, continuously in P or N 

• NOT OK 

  Refer to Checking for an open-circuit, contact resistance and oxidation 

Fig 1: Identifying Ignition Off Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Control Module Disconnected

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Control module disconnected.
• Turn of all equipment in the car that takes power from the battery (the interior lighting and radio etc).

  Connect an ohmmeter between the battery negative terminal and:

  #20 (#A20) on the breakout box

  #29 (#A29) on the breakout box.

  Fig 3: Breakout Box

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 4: Ohmmeter

  Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should read approximately 0Ω for all readings 

• OK 

  Refer to Checking signal cable, continuously in R/D/3/L 

• NOT OK 

  Refer to Checking for an open-circuit, contact resistance and oxidation