V70 2.4 L5-2.4L VIN 61 B5244S (2001)
Backup Lamp Switch: Testing and Inspection
Checking Reverse Light Contact
Reverse Light Does Not Work
Checking reverse light contact
Checking wire and replacement of component
Check the wire between the central electronic module (CEM) 1A and reverse light contact 2 (3/10) for a short circuit to ground as described in Checking
wiring and terminals. Permanent fault See: Testing and Inspection/Component Tests and General Diagnostics/Checking Wiring and Terminals/Checking
Wiring and Terminals. Permanent Fault.
Also check the connector for a short circuit to ground as described in Checking wiring and terminals. Permanent fault See: Testing and
Inspection/Component Tests and General Diagnostics/Checking Wiring and Terminals/Checking Wiring and Terminals. Permanent Fault.
If no fault is found on the wire, check the function of the reversing lamp switch.
Hint: If brake light contact is closed, the voltage between 1 and 2 on the contact is 0 V.
Do the necessary corrective action.
Additional information
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To access/replace the CEM connector, see Central electronic module (CEM), replacing See: Body and Frame/Body Control Systems/Body Control
Module/Service and Repair/Central Electronic Module (CEM), Replacing
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For information on signals and additional values, see Signal specification See: Body and Frame/Body Control Systems/Testing and
Inspection/Pinout Values and Diagnostic Parameters
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To connect a test box, see Connecting the breakout box See: Body and Frame/Body Control Systems/Testing and Inspection/Pinout Values and
Diagnostic Parameters/Connecting the Breakout Box/Connecting the Breakout Box, Central Electronic Module (CEM).
