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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 53 (Hybrid/EV Controls) >> Diagnostic Information and Procedures >> DTC P150D or P150E >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Vehicle ON.
  2. Verify DTC P0562 or P0563 is not set.
    • Go to next step: If none of the DTCs are set 
  3. Verify DTC P150D or P150E is not set.
    • If DTC P150D is set 
    1. Vehicle OFF, disconnect the X1 harness connector at the T6 Power Inverter Module.
    2. Verify a test lamp illuminates between the B+ circuit terminal 50 and ground.
      • If the test lamp does not illuminate and the circuit fuse is good 
      1. Remove the test lamp.
      2. Test for less than 2 Ω in the B+ circuit end to end.
        • If 2 Ω or greater, repair the open/high resistance in the circuit.
        • If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse.
      • If the test lamp does not illuminate and the circuit fuse is open 
      1. Remove the test lamp.
      2. Test for infinite resistance between the B+ circuit and ground.
        • If less than infinite resistance, repair the short to ground on the circuit.
        • If infinite resistance, replace the T6 Power Inverter Module.
      • Go to next step: If the test lamp illuminates 
    3. 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.
    4. Verify the DTC does not set.
      • If the DTC sets, replace the T6 Power Inverter Module.
      • Go to next step: If the DTC does not set
    5. All OK.
    • If DTC P150E is set 
    1. Vehicle OFF, disconnect the X1 harness connector at the T6 Power Inverter Module.
    2. Verify a test lamp illuminates between the B+ circuit terminal 2 and ground.
      • If the test lamp does not illuminate and the circuit fuse is good 
      1. Remove the test lamp.
      2. Test for less than 2 Ω in the B+ circuit end to end.
        • If 2 Ω or greater, repair the open/high resistance in the circuit.
        • If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse.
      • If the test lamp does not illuminate and the circuit fuse is open 
      1. Remove the test lamp.
      2. Test for infinite resistance between the B+ circuit and ground.
        • If less than infinite resistance, repair the short to ground on the circuit.
        • If infinite resistance, replace the T6 Power Inverter Module.
        • Go to next step: If the test lamp illuminates 
      3. 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.
      4. Verify the DTC does not set.
        • If the DTC sets, replace the T6 Power Inverter Module.
        • Go to next step: If the DTC does not set
      5. All OK.
    • Go to next step: If none of the DTCs are set 
  4. All OK.
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