Checking Wiring / Back-Up (Reversing) Light Switch

Check the cable between the central electronic module (CEM) terminal #1A and the back-up (reversing) lamp switch terminal #2 (3/10). Check for an intermittent short-circuit to ground.

Also check the back-up (reversing) lamp switch. Check for an intermittent short-circuit to ground.

Remedy as necessary.

Other information: 

• For information about the central electronic module (CEM), see Central electronic module (CEM), replacing
• To access the back-up (reversing) lamp switch, see
  • Back-up lamp switch, replacing
  • For M56 and M58 2001- see Back-up lamp switch, replacing
  • For M66AWD 2004-, see Back-up lamp switch, replacing .
  .

Fig 1: Identifying Back-Up Lamp Switch

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ground Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

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