Checking the wiring

Check the power supply cable between rear electronic module connector #B20 (#D20) and tilt sensor connector terminal #1. Check for an open-circuit.

Check the ground lead between rear electronic module, ground terminal 31/72 and tilt sensor connector terminal #5. Check for an open-circuit.

In particular check the connector in the tilt sensor for contact resistance and oxidation.

If no fault was found, try a new sensor.

Other information

For further information about signals and other values, see Signal specification
To connect the breakout box, see Connecting the breakout box
To access the rear electronic module, see Central electronic module (CEM), replacing
To access and replace the tilt sensor, see Tilt sensor alarm, replacing
See Checking wiring and terminals. Permanent fault .

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.