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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 >> 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. Ignition ON.
  2. Verify the scan tool Reverse Position Switch parameter should be Off and change to On when the transmission is shifted into reverse.
    • If the parameter does not change from Off to On 

      Refer to Circuit/System Testing.

    • If the parameter changes from Off to On 
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  4. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  5. All OK.
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