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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Lighting System) >> Diagnostic Information and Procedures >> Backup Lamps Malfunction (Manual Transmission) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine ON.
  2. Verify the scan tool Reverse Position Switch parameter changes between ON and OFF while shifting the vehicle between the neutral and reverse gears.
    • If the parameter does not change 

      Refer to Backup Lamp Switch Malfunction.

    • If the parameter changes 
  3. Verify the backup lamps turn ON and OFF when commanding the Backup Lamps ON and OFF with a scan tool.
    • If the backup lamps do not turn ON and OFF 

      Refer to Backup Lamps Malfunction.

    • If the backup lamps turn ON and OFF 
  4. All OK.
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