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Home >> Volvo >> 2012 >> XC90 R-Design, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Electrical - Symptom Related Diagnostic Procedures - 2 Of 2 >> Checking The Back-Up (Reversing) Lamp (1) (2003-04) >> Checking The Back-Up (Reversing) Lamp (1) >> Checking Components And Wiring

Checking Components And Wiring

Check that fuse 11D/4 is intact.

Check that the back-up (reversing) lamp bulbs are intact.

Check the cable between fuse 11D/4 terminal #2 and relay 2/80 terminal #5. Check the cable between relay 2/80 terminal #3 and the left and right upper lamp housing switches terminal #3. Check these cables for an open-circuit according to OPEN-CIRCUIT, PERMANENT FAULTS . Check these cables for a short-circuit to ground according to SHORT-CIRCUIT TO GROUND, PERMANENT FAULTS .

Check the cable between the left and right upper lamp housing switch terminal #1 and the ground terminal for an open-circuit according to OPEN-CIRCUIT, PERMANENT FAULTS .

Remedy as necessary.

Other information: 

Fig 1: Identifying Terminals
GLL104023Courtesy of VOLVO CARS CORPORATION
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS CORPORATION
Fig 3: Identifying Relays
GLL104090Courtesy of VOLVO CARS CORPORATION