Circuit/System Testing

Test 1

1. Ignition/Vehicle & All vehicle systems - Off
2. Disconnect the electrical connector: S79D Front Side Door Window Control Switch-Driver
3. Verify a test lamp illuminates between ground circuit terminal 11 and B+.
   • If the test lamp does not illuminate 
   1. Repair the open/high resistance on circuit 1150 or the ground connection.
   • Go to next step: If the test lamp illuminates 
4. Ignition - On / Vehicle - In Service Mode
5. Verify a test lamp Illuminates between B+ circuit terminal 24 and ground.
   • If the test lamp does not illuminate and the circuit fuse is good 
   1. Test the B+ circuit 1940 for an open/high resistance.
      • if an open/high resistance is found, repair the fault on the circuit.
      • Go to next step: If an open or high resistance is not found
   2. 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. Test the B+ circuit 1940 for a short to ground
      • If a short to ground is found, repair the fault on the circuit.
      • Go to next step: If a short to ground is not found
   2. Replace the S79D Front Side Door Window Control Switch-Driver
   • Go to next step: If the test lamp illuminates 
6. Ignition OFF, Connect the electrical connector: S79D Front Side Door Window Control Switch-Driver
7. Disconnect the electrical connector: M74D Front Side Door Window Regulator Motor-Driver
8. Connect a test lamp between the test points: Signal circuit terminal 3 & B+
9. Ignition - On / Vehicle - In Service Mode
10. Operate the component: Driver Left Front Window Switch @ S79D Front Side Door Window Control Switch-Driver - Pulled

    Verify the test lamp state:

    Driver Left Front Window Switch - Not Used = Test lamp Off

    Driver Left Front Window Switch - Pulled = Test lamp On

    • If the test lamp is always OFF 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79D Front Side Door Window Control Switch-Driver
    2. Test for infinite resistance between the circuit 2763 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 circuit 2763 end to end.
       • If 2 Ω or greater, repair the open/high resistance in the circuit.
       • If less than 2 Ω, replace the S79D Front Side Door Window Control Switch-Driver
    • If the test lamp is always ON 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79D Front Side Door Window Control Switch-Driver, ignition ON.
    2. Test for less than 1 V between the circuit 2763 and ground.
       • If 1 V or greater, repair the short to voltage on the circuit.
       • If less than 1 V, replace the S79D Front Side Door Window Control Switch-Driver
    • Go to next step: If the test lamp turns ON and OFF 
11. Connect a test lamp between the test points: Signal circuit terminal 7 & B+
12. Ignition - On / Vehicle - In Service Mode
13. Operate the component: Driver Left Front Window Switch @ S79D Front Side Door Window Control Switch-Driver - Pressed

    Verify the test lamp state:

    Driver Left Front Window Switch - Not Used = Test lamp Off

    Driver Left Front Window Switch - Pressed = Test lamp On

    • If the test lamp is always OFF 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79D Front Side Door Window Control Switch-Driver
    2. Test for infinite resistance between the circuit 2764 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 circuit 2764 end to end.
       • If 2 Ω or greater, repair the open/high resistance in the circuit.
       • If less than 2 Ω, replace the S79D Front Side Door Window Control Switch-Driver
    • If the test lamp is always ON 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79D Front Side Door Window Control Switch-Driver, ignition ON.
    2. Test for less than 1 V between the circuit 2764 and ground.
       • If 1 V or greater, repair the short to voltage on the circuit.
       • If less than 1 V, replace the S79D Front Side Door Window Control Switch-Driver.
    • Go to next step: If the test lamp turns ON and OFF 
14. Connect a test lamp between the test points: Signal circuit terminal 5 & B+
15. Ignition - On / Vehicle - In Service Mode
16. Operate the component: Driver Left Front Window Switch @ S79D Front Side Door Window Control Switch-Driver - Pressed & Pulled

    Verify the test lamp state:

    Driver Left Front Window Switch - Not Used = Test lamp Off

    Driver Left Front Window Switch - Pressed = Test lamp On

    Driver Left Front Window Switch - Pulled = Test lamp On

    • If the test lamp is always OFF 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79D Front Side Door Window Control Switch-Driver
    2. Test for infinite resistance between the circuit 2766 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 circuit 2766 end to end.
       • If 2 Ω or greater, repair the open/high resistance in the circuit.
       • If less than 2 Ω, replace the S79D Front Side Door Window Control Switch-Driver
    • If the test lamp is always ON 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79D Front Side Door Window Control Switch-Driver, ignition ON.
    2. Test for less than 1 V between the circuit 2766 and ground.
       • If 1 V or greater, repair the short to voltage on the circuit.
       • If less than 1 V, replace the S79D Front Side Door Window Control Switch-Driver.
    • Go to next step: If the test lamp turns ON and OFF 
17. Test or replace the component: M74D Front Side Door Window Regulator Motor-Driver

Test 2

1. Ignition/Vehicle & All vehicle systems - Off
2. Disconnect the electrical connector: S79P Front Side Door Window Switch - Passenger
3. Verify a test lamp illuminates between ground circuit terminal 1 and B+.
   • If the test lamp does not illuminate 
   1. Repair the open/high resistance on circuit 1250 or the ground connection.
   • Go to next step: If the test lamp illuminates 
4. Connect the electrical connector: S79P Front Side Door Window Switch - Passenger
5. Disconnect the electrical connector: M74P Front Side Door Window Regulator Motor-Passenger
6. Connect a test lamp between the test points: Signal circuit terminal 3 & B+
7. Ignition - On / Vehicle - In Service Mode
8. Operate the component: S79P Front Side Door Window Switch - Passenger - Pulled

   Verify the test lamp state:

   S79P Front Side Door Window Switch - Passenger - Not Used = Test lamp Off

   S79P Front Side Door Window Switch - Passenger - Pulled = Test lamp On

   • If the test lamp is always OFF 
   1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79P Front Side Door Window Switch-Passenger
   2. Test for infinite resistance between the circuit 1184 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 circuit 1184 end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the S79P Front Side Door Window Switch-Passenger
   • If the test lamp is always ON 
   1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79P Front Side Door Window Switch-Passenger ignition ON.
   2. Test for less than 1 V between the circuit 1184 and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the S79P Front Side Door Window Switch-Passenger
   • Go to next step: If the test lamp turns ON and OFF 
9. Connect a test lamp between the test points: Signal circuit terminal 7 & B+
10. Ignition - On / Vehicle - In Service Mode
11. Operate the component: S79P Front Side Door Window Switch - Passenger - Pressed

    Verify the test lamp state:

    S79P Front Side Door Window Switch - Passenger - Not Used = Test lamp Off

    S79P Front Side Door Window Switch - Passenger - Pressed = Test lamp On

    • If the test lamp is always OFF 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79P Front Side Door Window Switch-Passenger
    2. Test for infinite resistance between the circuit 5295 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 circuit 5295 end to end.
       • If 2 Ω or greater, repair the open/high resistance in the circuit.
       • If less than 2 Ω, replace the S79P Front Side Door Window Switch-Passenger
    • If the test lamp is always ON 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79P Front Side Door Window Switch-Passenger, ignition ON.
    2. Test for less than 1 V between the circuit 5295 and ground.
       • If 1 V or greater, repair the short to voltage on the circuit.
       • If less than 1 V, replace the S79P Front Side Door Window Switch-Passenger.
    • Go to next step: If the test lamp turns ON and OFF 
12. Connect a test lamp between the test points: Signal circuit terminal 5 & B+
13. Ignition - On / Vehicle - In Service Mode
14. Operate the component: S79P Front Side Door Window Switch - Passenger - Pressed & Pulled

    Verify the test lamp state:

    S79P Front Side Door Window Switch - Passenger - Not Used = Test lamp Off

    S79P Front Side Door Window Switch - Passenger - Pressed = Test lamp On

    S79P Front Side Door Window Switch - Passenger - Pulled = Test lamp On

    • If the test lamp is always OFF 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79P Front Side Door Window Switch-Passenger
    2. Test for infinite resistance between the circuit 2765 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 circuit 2765 end to end.
       • If 2 Ω or greater, repair the open/high resistance in the circuit.
       • If less than 2 Ω, replace the S79P Front Side Door Window Switch-Passenger
    • If the test lamp is always ON 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79P Front Side Door Window Switch-Passenger, ignition ON.
    2. Test for less than 1 V between the circuit 2765 and ground.
       • If 1 V or greater, repair the short to voltage on the circuit.
       • If less than 1 V, replace the S79P Front Side Door Window Switch-Passenger.
    • Go to next step: If the test lamp turns ON and OFF 
15. Test or replace the component: M74P Front Side Door Window Regulator Motor-Passenger

Test 3

1. Ignition/Vehicle & All vehicle systems - Off
2. Disconnect the electrical connector: S79LR Rear Side Door Window Switch - Left
3. Verify a test lamp illuminates between ground circuit terminal 7 and B+.
   • If the test lamp does not illuminate 
   1. Repair the open/high resistance on circuit 1150 or the ground connection.
   • Go to next step: If the test lamp illuminates 
4. Ignition - On / Vehicle - In Service Mode
5. Verify a test lamp Illuminates between B+ circuit terminal 8 and ground.
   • If the test lamp does not illuminate and the circuit fuse is good 
   1. Test the B+ circuit 3540 for an open/high resistance.
      • if an open/high resistance is found, repair the fault on the circuit.
      • Go to next step: If an open or high resistance is not found
   2. 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. Test the B+ circuit 3540 for a short to ground
      • If a short to ground is found, repair the fault on the circuit.
      • Go to next step: If a short to ground is not found
   2. Replace the S79LR Rear Side Door Window Switch - Left
   • Go to next step: If the test lamp illuminates 
6. Ignition/Vehicle - Off
7. Connect the electrical connector: S79LR Rear Side Door Window Switch - Left
8. Disconnect the electrical connector: M74LR Rear Side Door Window Regulator Motor - Left
9. Connect a test lamp between the test points: Control circuit terminal 1 & Ground
10. Ignition - On / Vehicle - In Service Mode
11. Operate the component: S79LR Rear Side Door Window Switch - Left Pulled

    Verify the test lamp state:

    S79LR Rear Side Door Window Switch - Left - Not Used = Test lamp Off

    S79LR Rear Side Door Window Switch - Left - Pulled = Test lamp On

    • If the test lamp is always OFF 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79LR Rear Side Door Window Switch - Left
    2. Test for infinite resistance between the circuit 668 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 circuit 668 end to end.
       • If 2 Ω or greater, repair the open/high resistance in the circuit.
       • If less than 2 Ω, replace the S79LR Rear Side Door Window Switch - Left
    • If the test lamp is always ON 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79LR Rear Side Door Window Switch - Left ignition ON.
    2. Test for less than 1 V between the circuit 668 and ground.
       • If 1 V or greater, repair the short to voltage on the circuit.
       • If less than 1 V, replace the S79LR Rear Side Door Window Switch - Left
    • Go to next step: If the test lamp turns ON and OFF 
12. Connect a test lamp between the test points: Control circuit terminal 2 & Ground
13. Ignition - On / Vehicle - In Service Mode
14. Operate the component: S79LR Rear Side Door Window Switch - Left Pulled

    Verify the test lamp state:

    S79LR Rear Side Door Window Switch - Left - Not Used = Test lamp Off

    S79LR Rear Side Door Window Switch - Left - Pressed = Test lamp On

    • If the test lamp is always OFF 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79LR Rear Side Door Window Switch - Left
    2. Test for infinite resistance between the circuit 669 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 circuit 669 end to end.
       • If 2 Ω or greater, repair the open/high resistance in the circuit.
       • If less than 2 Ω, replace the S79LR Rear Side Door Window Switch - Left
    • If the test lamp is always ON 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79LR Rear Side Door Window Switch - Left ignition ON.
    2. Test for less than 1 V between the circuit 669 and ground.
       • If 1 V or greater, repair the short to voltage on the circuit.
       • If less than 1 V, replace the S79LR Rear Side Door Window Switch - Left
    • Go to next step: If the test lamp turns ON and OFF 
15. Test or replace the component: M74LR Rear Side Door Window Regulator Motor - Left

Test 4

1. Ignition/Vehicle & All vehicle systems - Off
2. Disconnect the electrical connector: S79RR Rear Side Door Window Switch - Right
3. Verify a test lamp illuminates between ground circuit terminal 7 and B+.
   • If the test lamp does not illuminate 
   1. Repair the open/high resistance on circuit 1250 or the ground connection.
   • Go to next step: If the test lamp illuminates 
4. Ignition - On / Vehicle - In Service Mode
5. Verify a test lamp Illuminates between B+ circuit terminal 8 and ground.
   • If the test lamp does not illuminate and the circuit fuse is good 
   1. Test the B+ circuit 4240 for an open/high resistance.
      • if an open/high resistance is found, repair the fault on the circuit.
      • Go to next step: If an open or high resistance is not found
   2. 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. Test the B+ circuit 4240 for a short to ground
      • If a short to ground is found, repair the fault on the circuit.
      • Go to next step: If a short to ground is not found
   2. Replace the S79RR Rear Side Door Window Switch - Right
   • Go to next step: If the test lamp illuminates 
6. Ignition/Vehicle - Off
7. Connect the electrical connector: S79RR Rear Side Door Window Switch - Right
8. Disconnect the electrical connector: M74RR Rear Side Door Window Regulator Motor - Right
9. Connect a test lamp between the test points: Control circuit terminal 1 & Ground
10. Ignition - On / Vehicle - In Service Mode
11. Operate the component: S79RR Rear Side Door Window Switch - Right Pulled

    Verify the test lamp state:

    S79RR Rear Side Door Window Switch - Right - Not Used = Test lamp Off

    S79RR Rear Side Door Window Switch - Right - Pulled = Test lamp On

    • If the test lamp is always OFF 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79RR Rear Side Door Window Switch - Right
    2. Test for infinite resistance between the circuit 670 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 circuit 670 end to end.
       • If 2 Ω or greater, repair the open/high resistance in the circuit.
       • If less than 2 Ω, replace the S79RR Rear Side Door Window Switch - Right
    • If the test lamp is always ON 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79RR Rear Side Door Window Switch - Right ignition ON.
    2. Test for less than 1 V between the circuit 670 and ground.
       • If 1 V or greater, repair the short to voltage on the circuit.
       • If less than 1 V, replace the S79RR Rear Side Door Window Switch - Right
    • Go to next step: If the test lamp turns ON and OFF 
12. Connect a test lamp between the test points: Control circuit terminal 2 & Ground
13. Ignition - On / Vehicle - In Service Mode
14. Operate the component: S79RR Rear Side Door Window Switch - Right Pulled

    Verify the test lamp state:

    S79RR Rear Side Door Window Switch - Right - Not Used = Test lamp Off

    S79RR Rear Side Door Window Switch - Right - Pressed = Test lamp On

    • If the test lamp is always OFF 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79RR Rear Side Door Window Switch - Right
    2. Test for infinite resistance between the circuit 671 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 circuit 671 end to end.
       • If 2 Ω or greater, repair the open/high resistance in the circuit.
       • If less than 2 Ω, replace the S79RR Rear Side Door Window Switch - Right
    • If the test lamp is always ON 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S79RR Rear Side Door Window Switch - Right ignition ON.
    2. Test for less than 1 V between the circuit 671 and ground.
       • If 1 V or greater, repair the short to voltage on the circuit.
       • If less than 1 V, replace the S79RR Rear Side Door Window Switch - Right
    • Go to next step: If the test lamp turns ON and OFF 
15. Test or replace the component: M74RR Rear Side Door Window Regulator Motor - Right