Checking the wiring

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

HINT: The wiring between the upper electronic module (UEM) and the rain sensor consists of two cables.
Windshield wiper stalk in position "0".
Check the cable between upper electronic module (UEM) terminal #13 (#A13) and rain sensor terminal #1. Check for a short-circuit to ground.

HINT: The upper electronic module (UEM) terminal #20 (#A20) is signal ground.

Remedy as necessary.

Other information:
- See Interior lighting and upper electronic module (UEM), replacing
- See Rain sensor
- See Signal specification
- See Connecting the breakout box
- See Contents .
Fig 2: Identifying 10-CD Changer Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohmmeter
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.