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Home >> Chevrolet >> 2017 >> Volt Premier >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid/EV Control System >> Diagnostic Information and Procedures >> DTC P16F4: Control Module Transmission Range Switch Input Circuitry Performance (Hybrid/EV Powertrain Control Module 1) >> Circuit/System Verification
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Circuit/System Verification

  1. Verify DTC P1824, P182A - P182F, P1838 - P1841, P18B5 - P18BA, P18BC, P18BF, P18C0, P18C2, or P18C3 is not set.
    • If none of the DTCs are set 
  2. Verify that DTC P16F4 is not set.
    • If the DTC is set 
    1. Verify the T6 Power Inverter Module has the latest calibration in Calibration Information.
      • If the T6 Power Inverter Module does not have the latest calibration, program the T6 power inverter module.
      • If the T6 Power Inverter Module has the latest calibration, replace the T6 Power Inverter Module.
    2. 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.
    3. Verify the DTC does not set.
      • If the DTC sets, replace the T6 Power Inverter Module.
      • If the DTC does not set
    4. All OK
    • If the DTC is not set 
  3. All OK
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