Checking components and wiring

• Check the water pump and combustion preheater module (CPM) connectors. Check for contact resistance and oxidation. Check for damage in particular
• Check the cable between combustion preheater module (CPM) terminal #12 and water pump terminal 1. Check for an open-circuit. Check for a short-circuit to ground
• Check the cable between combustion preheater module (CPM) terminal #11 and water pump terminal 2. Check for an open-circuit.

The water pump must be replaced if no faults are found in the wiring.

Remedy as necessary.

Other information 

• See Connecting the breakout box
• See Signal specification
• See Water pump engine coolant heater, replacing
• See Checking wiring and terminals

Fig 1: Brake Pedal Position Sensor Connector Terminal Identification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Verification 

• Check the water pump and combustion preheater module (CPM) connectors. Check for contact resistance and oxidation
• Check the cable between combustion preheater module (CPM) terminal #12 and water pump terminal 1. Check for an intermittent open-circuit. Check for an intermittent short-circuit to ground
• Check the cable between combustion preheater module (CPM) terminal #11 and water pump terminal 2. Check for an intermittent open-circuit.

Remedy as necessary.

Other information 

• See Connecting the breakout box
• See Signal specification
• See Water pump engine coolant heater, replacing
• See Checking wiring and terminals

Fig 1: Brake Pedal Position Sensor Connector Terminal Identification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Verification