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Circuit/System Testing

  1. Ignition/Vehicle - Off
  2. Remove the component: KR95A Liftgate Unlatch Relay
  3. Connect a test lamp between the test points: Control circuit terminal R2-2 & Ground
  4. Ignition - On/Vehicle - In Service Mode
  5. Perform the scan tool control function: Liftgate Unlatch - Unlatch

    Verify the test lamp turns On and Off.

    • If the test lamp is always Off 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: X5 @ K9 Body Control Module
    3. Test for infinite resistance between the test points: Control circuit terminal R2-2 @ Relay Socket & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    4. Test for less than 2 ohms between the test points: Control circuit terminal R2-2 @ Relay Socket & Terminal 11 X5 @ Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K9 Body Control Module
    • If the test lamp is always On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: X5 @ K9 Body Control Module
    3. Ignition - On/Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Control circuit terminal R2-2 @ Relay Socket & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • If less than 1 V - Replace the component: K9 Body Control Module
    • Go to next step: If the test lamp turns On and Off 
  6. Connect a test lamp between the test points: B+ circuit terminal R2-3 & Control circuit terminal R2-1
  7. Perform the scan tool control function: Liftgate Unlatch - Unlatch

    Verify the test lamp turns On and Off.

    • If the test lamp is always Off 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: X5 @ K9 Body Control Module
    3. Ignition - On/Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Control circuit terminal R2-1 @ Relay Socket & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    5. Ignition/Vehicle - Off
    6. Test for less than 2 ohms between the test points: Control circuit terminal R2-1 @ Relay Socket & Terminal 20 X5 @ Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K9 Body Control Module
    • If the test lamp is always On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: X5 @ K9 Body Control Module
    3. Test for infinite resistance between the test points: Control circuit terminal R2-1 @ Relay Socket & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: K9 Body Control Module
    • Go to next step: If the test lamp turns On and Off 
  8. Test or replace the component: KR95A Liftgate Unlatch Relay
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