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Circuit/System Testing

  1. Vehicle OFF, disconnect the harness connector at the S58B Rear Compartment Lid Unlatch Switch-Interior. Vehicle in Service Mode.
  2. Verify a test lamp illuminates between the B+ circuit terminal 8 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Vehicle OFF.
    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. Vehicle OFF.
    2. Test for infinite resistance between the B+ circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    3. Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
    4. Test for infinite resistance between the signal circuit terminal 2 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K114B Hybrid/EV Powertrain Control Module 2.
    • Go to next step: If the test lamp illuminates 
  3. Vehicle OFF, connect the harness connector at the S58B Rear Compartment Lid Unlatch Switch-Interior. Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
  4. Connect a test lamp between the signal circuit terminal 7 and ground.
  5. Verify the test lamp turns ON and OFF by pressing the S58B Rear Compartment Lid Unlatch Switch-Interior.
    • If the test lamp is always OFF 
    1. Vehicle OFF, remove the test lamp, disconnect the harness connector at the S58B Rear Compartment Lid Unlatch Switch-Interior.
    2. Test for infinite resistance between the signal circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    3. Test for less than 2 Ω in the control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, test or replace the S58B Rear Compartment Lid Unlatch Switch-Interior.
    • If the test lamp is always ON 
    1. Vehicle OFF, disconnect the harness connector at the S58B Rear Compartment Lid Unlatch Switch-Interior, Vehicle in Service Mode.
    2. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, test or replace the S58B Rear Compartment Lid Unlatch Switch-Interior.
    • Go to next step: If the test lamp turns ON and OFF 
  6. Replace the K114B Hybrid/EV Powertrain Control Module 2.
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