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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Vehicle Will Not Change Power Mode >> 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.

Without Push Button Start

  1. Ignition ON.
  2. Verify the scan tool power mode parameters change when cycling the S39 Ignition Switch between OFF, ACCESSORY, ON, and CRANK.
    • If the parameters do not change 

      Refer to Circuit/System Testing - Without Push Button Start.

    • If the parameters change 
  3. All OK.

With Push Button Start

  1. Verify DTC B097B 61 is not set.
    • If DTC B097B 61 is set 

      Test or replace the S38 Ignition Mode Switch.

    • If DTC B097B 61 is not set 
  2. Verify the green LED illuminates when the S38 Ignition Mode Switch is pressed and held for up to 10 s, with the brake pedal released.
    • If the green LED does not illuminate 

      Refer to Circuit/System Testing - With Push Button Start.

    • If the green LED illuminates 
  3. All OK.
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