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Circuit/System Testing

Driver Window Inoperative

  1. Ignition OFF and all vehicle systems OFF, disconnect the X1 and X2 harness connectors at the K9 Body Control Module. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 10 Ω between the ground circuit terminal 15 X2 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 Ω 
  3. Ignition ON.
  4. Verify a test lamp illuminates between the B+ circuit terminal listed below and ground:
    • B+ circuit terminal 11 X1
    • B+ circuit terminal 38 X1
    • B+ circuit terminal 42 X2
    • B+ circuit terminal 50 X2
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition 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. Ignition 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. Replace the K9 Body Control Module.
    • Go to next step: If the test lamp illuminates 
  5. Ignition OFF, connect the X1 and X2 harness connectors at the K9 Body Control Module.
  6. Disconnect the harness connector at the S101D Door Lock/Window Switch-Driver. It may take up to 2 minutes for all vehicle systems to power down.
  7. Test for less than 10 Ω between the ground circuit terminal 15 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 Ω 
  8. Ignition ON.
  9. Verify a test lamp illuminates between the B+ circuit terminal 1 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the X2 harness connector at the K9 Body Control Module.
    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 harness connector at the K9 Body Control Module.
    4. 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, replace the K9 Body Control Module.
    • Go to next step: If the test lamp illuminates 
  10. Verify a test lamp illuminates between the ignition circuit terminal 10 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the X2 harness connector at the K9 Body Control Module.
    2. Test for infinite resistance between the ignition 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 harness connector at the K9 Body Control Module.
    4. Test for less than 2 Ω in the ignition circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K9 Body Control Module.
    • Go to next step: If the test lamp illuminates 
  11. Ignition OFF, connect the harness connector at the S101D Door Lock/Window Switch-Driver.
  12. Disconnect the harness connector at the M74D Window Motor - Driver.
  13. Test for less than 10 Ω between the control circuit terminal 1 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF, disconnect the harness connector at the S101D Door Lock/Window Switch-Driver.
    2. 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 S101D Door Lock/Window Switch-Driver.
    • Go to next step: If less than 10 Ω 
  14. Test for less than 10 Ω between the control circuit terminal 3 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF, disconnect the harness connector at the S101D Door Lock/Window Switch-Driver.
    2. 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 S101D Door Lock/Window Switch-Driver.
    • Go to next step: If less than 10 Ω 
  15. Connect a test lamp between the control circuit terminal 1 and control circuit terminal 3, ignition ON.
  16. Verify the test lamp turns ON when commanding the UP and DOWN states with the S101D Door Lock/Window Switch-Driver.
    • If the test lamp remains OFF during either of the commands 
    1. Ignition OFF, disconnect the harness connector at the S101D Door Lock/Window Switch-Driver.
    2. Test for infinite resistance between each control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the S101D Door Lock/Window Switch-Driver.
    • Go to next step: If the test lamp turns ON during each of the commands 
  17. Test or replace the M74D Window Motor - Driver.

Driver Window Express Malfunction

  1. Ignition OFF, disconnect the harness connector at the M74D Window Motor - Driver, ignition ON
  2. Test for less than 10 Ω between the low reference circuit terminal 4 and ground
    • If 10 Ω or greater 
    1. Ignition OFF, disconnect the harness connector at the S101D Door Lock/Window Switch-Driver.
    2. Test for less than 2 Ω in the low reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the S101D Door Lock/Window Switch-Driver
    • Go to next step: If less than 10 Ω 
  3. Ignition ON.
  4. Verify a test lamp illuminates between the 12 V reference circuit terminal 1 and ground
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the harness connector at the S101D Door Lock/Window Switch-Driver.
    2. Test for infinite resistance between the 12 V reference 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 harness connector at the S101D Door Lock/Window Switch-Driver.
    4. Test for less than 2 Ω in the 12 V reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the S101D Door Lock/Window Switch-Driver.
    • Go to next step: If the test lamp illuminates 
  5. Test for 4.8 - 5.2 V between the position sensor 1 signal circuit terminal 5 and ground.
    • If less than 4.8 V 
    1. Ignition OFF, disconnect the harness connector at the S101D Door Lock/Window Switch-Driver.
    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 signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the S101D Door Lock/Window Switch-Driver.
    • If greater than 5.2 V 
    1. Ignition OFF, disconnect the harness connector at the S101D Door Lock/Window Switch-Driver, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the S101D Door Lock/Window Switch-Driver.
    • Go to next step: If between 4.8 - 5.2 V 
  6. Test for 4.8 - 5.2 V between the position sensor 2 signal circuit terminal 6 and ground.
    • If less than 4.8 V 
    1. Ignition OFF, disconnect the harness connector at the S101D Door Lock/Window Switch-Driver.
    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 signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the S101D Door Lock/Window Switch-Driver.
    • If greater than 5.2 V 
    1. Ignition OFF, disconnect the harness connector at the S101D Door Lock/Window Switch-Driver, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the S101D Door Lock/Window Switch-Driver.
    • Go to next step: If between 4.8 - 5.2 V 
  7. Test or replace the M74D Window Motor - Driver.

Passenger Window Inoperative From Both Switches

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S101P Door Lock/Window Switch-Passenger. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 10 Ω between the ground circuit terminal 11 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 Ω 
  3. Ignition ON.
  4. Verify a test lamp illuminates between the B+ circuit terminal 1 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the X2 harness connector at the K9 Body Control Module.
    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 harness connector at the K9 Body Control Module.
    4. 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, replace the K9 Body Control Module.
    • Go to next step: If the test lamp illuminates 
  5. Test for 10.5 - 11.5 V between the serial data circuit terminal 12 and ground.
    • If less than 10.5 V 
    1. Ignition OFF, disconnect the harness connector at the S101D Door Lock/Window Switch-Driver.
    2. Test for infinite resistance between the serial data 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 serial data circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the S101D Door Lock/Window Switch-Driver.
    • If greater than 11.5 V 
    1. Ignition OFF, disconnect the harness connector at the S101D Door Lock/Window Switch-Driver, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the S101D Door Lock/Window Switch-Driver.
    • Go to next step: If between 10.5 - 11.5 V 
  6. Ignition OFF, connect the harness connector at the S101P Door Lock/Window Switch-Passenger.
  7. Disconnect the harness connector at the M74P Window Motor - Passenger.
  8. Test for less than 10 Ω between the control circuit terminal 1 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF, disconnect the harness connector at the S101P Door Lock/Window Switch-Passenger.
    2. 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 S101P Door Lock/Window Switch-Passenger.
    • Go to next step: If less than 10 Ω 
  9. Test for less than 10 Ω between the control circuit terminal 3 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF, disconnect the harness connector at the S101P Door Lock/Window Switch-Passenger.
    2. 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 S101P Door Lock/Window Switch-Passenger.
    • Go to next step: If less than 10 Ω 
  10. Connect a test lamp between the control circuit terminal 1 and control circuit terminal 3, ignition ON.
  11. Verify the test lamp turns ON when commanding the UP and DOWN states with the S101P Door Lock/Window Switch-Passenger.
    • If the test lamp remains OFF during either of the commands 
    1. Ignition OFF, disconnect the harness connector at the S101P Door Lock/Window Switch-Passenger.
    2. Test for infinite resistance between each control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the S101P Door Lock/Window Switch-Passenger.
    • Go to next step: If the test lamp turns ON during each of the commands 
  12. Test or replace the M74P Window Motor - Passenger.

Passenger Window Express Malfunction

  1. Ignition OFF, disconnect the harness connector at the M74P Window Motor - Passenger, ignition ON.
  2. Test for less than 10 Ω between the low reference circuit terminal 4 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF, disconnect the harness connector at the S101P Door Lock/Window Switch-Passenger.
    2. Test for less than 2 Ω in the low reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the S101P Door Lock/Window Switch-Passenger
    • Go to next step: If less than 10 Ω 
  3. Ignition ON.
  4. Verify a test lamp illuminates between the 12 V reference circuit terminal 1 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the harness connector at the S101P Door Lock/Window Switch-Passenger.
    2. Test for infinite resistance between the 12 V reference 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 harness connector at the S101P Door Lock/Window Switch-Passenger.
    4. Test for less than 2 Ω in the 12 V reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the S101P Door Lock/Window Switch-Passenger.
    • Go to next step: If the test lamp illuminates 
  5. Test for 4.8 - 5.2 V between the position sensor 1 signal circuit terminal 5 and ground.
    • If less than 4.8 V 
    1. Ignition OFF, disconnect the harness connector at the S101P Door Lock/Window Switch-Passenger.
    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 signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the S101P Door Lock/Window Switch-Passenger.
    • If greater than 5.2 V 
    1. Ignition OFF, disconnect the harness connector at the S101P Door Lock/Window Switch-Passenger, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the S101P Door Lock/Window Switch-Passenger.
    • Go to next step: If between 4.8 - 5.2 V 
  6. Test for 4.8 - 5.2 V between the position sensor 2 signal circuit terminal 6 and ground.
    • If less than 4.8 V 
    1. Ignition OFF, disconnect the harness connector at the S101P Door Lock/Window Switch-Passenger.
    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 signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the S101P Door Lock/Window Switch-Passenger.
    • If greater than 5.2 V 
    1. Ignition OFF, disconnect the harness connector at the S101P Door Lock/Window Switch-Passenger, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the S101P Door Lock/Window Switch-Passenger.
    • Go to next step: If between 4.8 - 5.2 V 
  7. Test or replace the M74P Window Motor - Passenger.
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