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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Automatic Transmission - JATCO CVT) >> Diagnostic Information and Procedures >> DTC P0885: Transmission Control Module (TCM) Power Relay Control 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. Verify that the Ignition Voltage parameter displays greater than 8.4 V.
    • If the Ignition Voltage parameter does NOT display greater than 8.4 V 

      Refer to Circuit/System Testing.

    • If the Ignition Voltage parameter does display greater than 8.4 V 
  2. Verify DTC P0885 is only set as a history DTC.
    • If DTC P0885 is set as current 

      Refer to Circuit/System Testing.

  3. Clear DTC P0885 from history.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observe from the Freeze Frame/Failure Records data. The DTC should not set.
    • If any of the DTCs set 

      Refer to Circuit/System Testing.

    • If none of the DTCs set 
  5. All OK.
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