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Circuit/System Testing

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector:M97 Fuel Fill Door Lock Actuator
  3. Connect a test lamp between the test points:Control circuit terminal 1 & Control circuit terminal 2
  4. Ignition - On / Vehicle - In Service Mode
  5. Operate the component:S13D Door Lock Switch - Driver - Lock Switch & Unlock Switch

    Verify the test lamp does not turn On and Off.

    • If the test lamp turns On and Off 

      Test or replace the component:M97 Fuel Fill Door Lock Actuator

    • Go to next step: If the test lamp does not turn On and Off 
  6. Disconnect the electrical connector:X6@K9 Body Control Module
  7. Disconnect the electrical connector:X3@X53A Fuse Block - Rear Body
  8. Test for less than 2 ohms between the test points:
    • Control circuit terminal 1@Component harness & Terminal 4 X6@Control module harness
    • Control circuit terminal 2@Component harness & Terminal 19 X3@Fuse Block Harness
    • If 2 ohms or greater 
    • Repair the open/high resistance in the circuit.
    • Go to next step: If less than 2 ohms 
    9. NOTE:

    It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.

  9. Ignition/Vehicle & All vehicle systems - Off
  10. Connect the electrical connector:X6@K9 Body Control Module
  11. Connect the electrical connector:X3@X53A Fuse Block - Rear Body
  12. Disconnect the electrical connector:X2@X53A Fuse Block - Rear Body
  13. Test for less than 10 ohms between the test points:Ground circuit terminal 27 & Ground
    • If 10 ohms or greater 
    1. Ground Connection - Disconnect
    2. Test for less than 2 ohms between the test points:Ground circuit terminal 27 & Ground Connection
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 ohms 
  14. Connect the electrical connector:X2@X53A Fuse Block - Rear Body
  15. Disconnect the electrical connector:X7@K9 Body Control Module
  16. Ignition - On / Vehicle - In Service Mode
  17. Momentarily connect a 3 A fused jumper wire between the test points:Control circuit terminal 4 X7 & B+

    Verify the component produces a clicking sound:KR132 Fuel Fill Door Lock Relay

    • If the component does not produce a sound 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the electrical connector:X2@X53A Fuse Block - Rear Body
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points:Control circuit terminal 4 X7@Control module harness & 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 infinite resistance between the test points:Control circuit terminal 4 X7@Control module harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    7. Test for less than 2 ohms between the test points:Control circuit terminal 4 X7@Control module harness & Control circuit terminal 31 X2@Fuse Block Harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Test or replace the component:X53A Fuse Block - Rear Body
    • Go to next step: If the component turns On and Off 
  18. Replace the component:K9 Body Control Module
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