Circuit/System Testing

Test 1

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.

1. Ignition/Vehicle & All vehicle systems - Off
2. Disconnect the electrical connector: S79D Window Switch - Driver
3. Test for less than 10 ohms between the test points: Ground circuit terminal 1 & Ground
   • If 10 ohms or greater 
   1. Ground Connection - Disconnect
   2. Test for less than 2 ohms between the test points: Ground circuit terminal 1 @ Component harness & 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 
4. Ignition - On / Vehicle - In Service Mode
5. Verify a test lamp turns On between the test points: B+ circuit terminal 4 & Ground
   • If the test lamp does not turn On and the circuit fuse is OK 
   1. Ignition/Vehicle - Off & Remove - Test lamp
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Verify the fuse is OK and there is voltage at the fuse.
   • If the test lamp does not turn On and the circuit fuse is open 
   1. Ignition/Vehicle - Off & Remove - Test lamp
   2. Test for infinite resistance between the test points: B+ circuit terminal 4 & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: S79D Window Switch - Driver
   • Go to next step: If the test lamp turns On 
6. Connect the electrical connector: S79D Window Switch - Driver
7. Disconnect the electrical connector: M74D Window 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: S79D Window Switch - Driver - Pulled

    Verify the test lamp state:

    S79D Window Switch - Driver - Not Used = Test lamp Off

    S79D Window Switch - Driver - Pulled = Test lamp On

    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: S79D Window Switch - Driver
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Signal circuit terminal 3 @ Component 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: Signal circuit terminal 3 @ Component 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: Signal circuit terminal 3 @ Component harness & Signal circuit terminal 6 @ S79D Window Switch - Driver
       • If 2 ohms or greater - Repair the open/high resistance in the circuit.
       • If less than 2 ohms - Replace the component: S79D Window Switch - Driver
    • Go to next step: If the specified state 
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: S79D Window Switch - Driver - Pressed

    Verify the test lamp state:

    S79D Window Switch - Driver - Not Used = Test lamp Off

    S79D Window Switch - Driver - Pressed = Test lamp On

    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: S79D Window Switch - Driver
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Signal circuit terminal 7 @ Component 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: Signal circuit terminal 7 @ Component 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: Signal circuit terminal 7 @ Component harness & Signal circuit terminal 3 @ S79D Window Switch - Driver
       • If 2 ohms or greater - Repair the open/high resistance in the circuit.
       • If less than 2 ohms - Replace the component: S79D Window Switch - Driver
    • Go to next step: If the specified state 
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: S79D Window Switch - Driver - Pressed & Pulled

    Verify the test lamp state:

    S79D Window Switch - Driver - Not Used = Test lamp Off

    S79D Window Switch - Driver - Pressed = Test lamp On

    S79D Window Switch - Driver - Pulled = Test lamp On

    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: S79D Window Switch - Driver
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Signal circuit terminal 5 @ Component 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: Signal circuit terminal 5 @ Component 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: Signal circuit terminal 5 @ Component harness & Signal circuit terminal 2 @ S79D Window Switch - Driver
       • If 2 ohms or greater - Repair the open/high resistance in the circuit.
       • If less than 2 ohms - Replace the component: S79D Window Switch - Driver
    • Go to next step: If the specified state 
17. Test or replace the component: M74D Window Motor - Driver

Test 2

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.

1. Ignition/Vehicle & All vehicle systems - Off
2. Disconnect the electrical connector: S79P Window Switch - Passenger
3. Test for less than 10 ohms between the test points: Ground circuit terminal 1 & Ground
   • If 10 ohms or greater 
   1. Ground Connection - Disconnect
   2. Test for less than 2 ohms between the test points: Ground circuit terminal 1 @ Component harness & 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 
4. Ignition - On / Vehicle - In Service Mode
5. Verify a test lamp turns On between the test points: B+ circuit terminal 4 & Ground
   • If the test lamp does not turn On and the circuit fuse is OK 
   1. Ignition/Vehicle - Off & Remove - Test lamp
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Verify the fuse is OK and there is voltage at the fuse.
   • If the test lamp does not turn On and the circuit fuse is open 
   1. Ignition/Vehicle - Off & Remove - Test lamp
   2. Test for infinite resistance between the test points: B+ circuit terminal 4 & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: S79P Window Switch - Passenger
   • Go to next step: If the test lamp turns On 
6. Ignition/Vehicle - Off
7. Connect the electrical connector: S79P Window Switch - Passenger
8. Disconnect the electrical connector: M74P Window Motor - Passenger
9. Connect a test lamp between the test points: Control circuit terminal 1 & Control circuit terminal 2
10. Ignition - On / Vehicle - In Service Mode
11. Perform the scan tool control function: Passenger Window Motor

    Verify the test lamp state:

    Passenger Window Motor - Stop = Test lamp Off

    Passenger Window Motor - Up = Test lamp On

    Passenger Window Motor - Down = Test lamp On

    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: S79P Window Switch - Passenger
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points:
       • Control circuit terminal 1 @ Component harness & Ground
       • Control circuit terminal 2 @ Component 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 1 @ Component harness & Ground
       • Control circuit terminal 2 @ Component 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 1 @ Component harness & Control circuit terminal 3 @ S79P Window Switch - Passenger
       • Control circuit terminal 2 @ Component harness & Control circuit terminal 2 @ S79P Window Switch - Passenger
         • If 2 ohms or greater - Repair the open/high resistance in the circuit.
         • If less than 2 ohms - Replace the component: S79P Window Switch - Passenger
    • Go to next step: If the specified state 
12. Test or replace the component: M74P Window Motor - Passenger

Test 3

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.

1. Ignition/Vehicle & All vehicle systems - Off
2. Disconnect the electrical connector: S79LR Window Switch - Left Rear
3. Test for less than 10 ohms between the test points: Ground circuit terminal 5 & Ground
   • If 10 ohms or greater 
   1. Ground Connection - Disconnect
   2. Test for less than 2 ohms between the test points: Ground circuit terminal 5 @ Component harness & 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 
4. Ignition - On / Vehicle - In Service Mode
5. Verify a test lamp turns On between the test points: B+ circuit terminal 8 & Ground
   • If the test lamp does not turn On and the circuit fuse is OK 
   1. Ignition/Vehicle - Off & Remove - Test lamp
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Verify the fuse is OK and there is voltage at the fuse.
   • If the test lamp does not turn On and the circuit fuse is open 
   1. Ignition/Vehicle - Off & Remove - Test lamp
   2. Test for infinite resistance between the test points: B+ circuit terminal 8 & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: S79LR Window Switch - Left Rear
   • Go to next step: If the test lamp turns On 
6. Ignition/Vehicle - Off
7. Connect the electrical connector: S79LR Window Switch - Left Rear
8. Disconnect the electrical connector: M74LR Window Motor - Left Rear
9. Connect a test lamp between the test points: Control circuit terminal 1 & Control circuit terminal 2
10. Ignition - On / Vehicle - In Service Mode
11. Perform the scan tool control function: Left Rear Window Motor

    Verify the test lamp state:

    Left Rear Window Motor - Stop = Test lamp Off

    Left Rear Window Motor - Up = Test lamp On

    Left Rear Window Motor - Down = Test lamp On

    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: S79LR Window Switch - Left Rear
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points:
       • Control circuit terminal 1 @ Component harness & Ground
       • Control circuit terminal 2 @ Component 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 1 @ Component harness & Ground
       • Control circuit terminal 2 @ Component 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 1 @ Component harness & Control circuit terminal 7 @ S79LR Window Switch - Left Rear
       • Control circuit terminal 2 @ Component harness & Control circuit terminal 6 @ S79LR Window Switch - Left Rear
         • If 2 ohms or greater - Repair the open/high resistance in the circuit.
         • If less than 2 ohms - Replace the component: S79LR Window Switch - Left Rear
    • Go to next step: If the specified state 
12. Test or replace the component: M74LR Window Motor - Left Rear

Test 4

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.

1. Ignition/Vehicle & All vehicle systems - Off
2. Disconnect the electrical connector: S79RR Window Switch - Right Rear
3. Test for less than 10 ohms between the test points: Ground circuit terminal 5 & Ground
   • If 10 ohms or greater 
   1. Ground Connection - Disconnect
   2. Test for less than 2 ohms between the test points: Ground circuit terminal 5 @ Component harness & 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 
4. Ignition - On / Vehicle - In Service Mode
5. Verify a test lamp turns On between the test points: B+ circuit terminal 8 & Ground
   • If the test lamp does not turn On and the circuit fuse is OK 
   1. Ignition/Vehicle - Off & Remove - Test lamp
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Verify the fuse is OK and there is voltage at the fuse.
   • If the test lamp does not turn On and the circuit fuse is open 
   1. Ignition/Vehicle - Off & Remove - Test lamp
   2. Test for infinite resistance between the test points: B+ circuit terminal 8 & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: S79RR Window Switch - Right Rear
   • Go to next step: If the test lamp turns On 
6. Ignition/Vehicle - Off
7. Connect the electrical connector: S79RR Window Switch - Right Rear
8. Disconnect the electrical connector: M74RR Window Motor - Right Rear
9. Connect a test lamp between the test points: Control circuit terminal 1 & Control circuit terminal 2
10. Ignition - On / Vehicle - In Service Mode
11. Perform the scan tool control function: Right Rear Window Motor

    Verify the test lamp state:

    Right Rear Window Motor - Stop = Test lamp Off

    Right Rear Window Motor - Up = Test lamp On

    Right Rear Window Motor - Down = Test lamp On

    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: S79RR Window Switch - Right Rear
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points:
       • Control circuit terminal 1 @ Component harness & Ground
       • Control circuit terminal 2 @ Component 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 1 @ Component harness & Ground
       • Control circuit terminal 2 @ Component 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 1 @ Component harness & Control circuit terminal 7 @ S79RR Window Switch - Right Rear
       • Control circuit terminal 2 @ Component harness & Control circuit terminal 6 @ S79RR Window Switch - Right Rear
         • If 2 ohms or greater - Repair the open/high resistance in the circuit.
         • If less than 2 ohms - Replace the component: S79RR Window Switch - Right Rear
    • Go to next step: If the specified state 
12. Test or replace the component: M74RR Window Motor - Right Rear