Checking components and wiring

Check the cable between control module terminal #12 and water pump terminal 1. Check for an open-circuit. Check for a short-circuit to ground.

Check the cable between control module #11 and water pump terminal 2. Check for an open-circuit.

The water pump must be changed if no fault is found on the cable.

Remedy as necessary.

Other information: 

• To access the control module or connect the breakout box, see Connecting the breakout box
• To access or replace the water pump, see Replacing the water pump for the engine coolant heater
• For other values, see Signal specification
• See Checking wiring and terminals .

Fig 1: Identifying 2-Bit Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

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  Refer to Verification