Checking components and wiring

Check the resistance of the outside temperature sensor.

Check the signal cable between control module terminal #B29 (#B39) and outside temperature sensor terminal #2. Check for a short-circuit to supply voltage. Check for an open-circuit.

HINT: With the ignition on and the outside temperature sensor connector disconnected, the voltage between #2 and ground must be approximately 5 V. 

Check the ground lead between control module terminal #B4 (#B14) and outside temperature sensor terminal #3. Check for an open-circuit.

Remedy as necessary.

Other information 

• To connect the breakout box / access the control module, see Connecting the breakout box
• To access and replace the outside temperature sensor, see Outside temperature sensor door mirror, replacing
• For resistance values, see Component specifications
• For information about signals, see ELECTRICAL SYSTEM

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Voltage Display

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Locating Outside Temperature Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Verification