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Home >> Volvo >> 2007 >> S60 Base, AWD >> Repair and Diagnosis >> Electrical >> Body Electrical >> Central Electronic Module (CEM), Rear Electronic Module (Rem), Upper Electronics Module (UEM) - Diagnostic Trouble Codes - 8 Of 13 >> CEM-8D02: Stop Lamps. Faulty Signal (2005) >> Faulty signal >> Checking Status, Components And Wiring >> Checking Components And Wiring

Checking Components And Wiring

Check the voltage between the left and right-hand stop lamps and the output on the rear electronic module (REM). The voltage must be approximately 12 V when the stop lamp is activated.

Check the control signal cable. Check for an open-circuit. Check for a short-circuit to supply voltage.

Take readings between:

S60 

Check the cable between central electronic module (CEM) terminal #A15 (15) and rear electronic module (REM) terminal #A18 (18). Check for a short-circuit to supply voltage. Check for an open-circuit.

Remedy as necessary.

Other information 

Fig 1: Identifying 4-Bit Connector
GLL140618Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Tail Lamps
GLL140569Courtesy of VOLVO CARS OF NORTH AMERICA.