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Home >> Chevrolet >> 2017 >> Bolt EV Premier >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC P0AF7: 14V Power Module High Temperature >> Circuit/System Verification
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Circuit/System Verification

  1. Inspect for proper coolant level in the radiator surge tank.
    • If coolant level is OK 
  2. Inspect the hybrid/EV cooling system for leaks.
    • If a leak is found 

      Repair or replace the leaking component. Refer to the appropriate repair.

    • If a leak is not found 
  3. Inspect the hybrid/EV cooling hoses for pinches or obstructions.
    • If a concern is found 

      Repair or replace hoses as necessary.

    • If a concern is not found 
  4. Inspect the hybrid/EV electronics cooling system radiator for debris or obstruction.
    • If a concern is found 

      Repair or replace the restricted or damaged components as necessary.

    • If a concern is not found 
  5. Inspect for proper operation of the hybrid/EV system coolant pump.
    • If a concern is found 

      Repair or replace the coolant pump as necessary.

    • If a concern is not found 
  6. If the DTC sets: Replace - 14V Power Module