Intermittent fault

Check the cable between control module terminal #16 and the signal terminal for the engine coolant temperature sensor. Check for an intermittent short-circuit to ground.

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 engine coolant temperature sensor. For cars manufactured up to w38 2001 inclusive, see Overheat protection thermostat / flame sensor / engine coolant temperature sensor, replacing
• For cars manufactured from w39 2001 inclusive, see Replacing the overheat protection thermostat, the flame sensor and the engine coolant temperature sensor .
• For other values, see Signal specification
• See Checking wiring and terminals .

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Coolant Temperature Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Information