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Circuit/System Testing

  1. Ignition OFF, disconnect the X5 harness connector at the K9 body Control Module, ignition ON.
  2. Verify a test lamp illuminates between the control circuit terminal 18 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the X2 harness connector at the X50A Fuse Block - Underhood.
    2. Test for infinite resistance between the control circuit terminal and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2Ω in the control circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, replace the X50A Fuse Block - Underhood.
    • If the test lamp illuminates 
  3. Ignition OFF, connect a 3A fused jumper between the control circuit terminal 18 and ground.
  4. Remove the F38UA fuse at the X50A Fuse Block - Underhood, ignition ON.
  5. Verify a test lamp illuminates between the F38UA fuse B+ switch control terminal and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the X2 harness connector at the X50A Fuse Block - Underhood, ignition ON.
    2. Test for less than 1V between the control circuit terminal 18 and ground.
      • If 1V or greater, repair the short to voltage on the circuit.
      • If less than 1V, replace the X50A Fuse Block - Underhood.
    • If the test lamp illuminates 
  6. Test or replace the K9 body Control Module.
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