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Circuit/System Testing

  1. Ignition OFF and all vehicle systems OFF, disconnect the X5 harness connector at the K9 body control module.
  2. Ignition ON.
  3. Test for greater than 10 V between the control circuit terminal 19 and ground.
    • If 10 V or less 
    1. Ignition OFF, disconnect the harness connector at the X50A fuse block-underhood.
    2. Test for infinite resistance between the control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • 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, replace the X50A fuse block-underhood.
    • If greater than 10 V 
  4. Replace the K9 body control module.
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