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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Manual Transmission - Y4A/Y4M (MR7)) >> Diagnostic Information and Procedures >> DTC P0812: Reverse Position Switch Circuit >> Component Testing

Component Testing

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. Ignition OFF, disconnect the harness connector at the B16 Backup Lamp Switch.
  2. Place the transmission in Reverse position.
  3. Test for less then 5 Ω between the signal terminal 1 and the ground terminal 2 at the B16 Backup Lamp Switch.
    • If 5 Ω or greater 

      Replace the B16 Backup Lamp Switch.

    • If less than 5 Ω 
  4. All OK.
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