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.

Ignition/Vehicle & All vehicle systems - Off
Disconnect the appropriate electrical connector: S79LR Window Switch - Left Rear/S79RR Window Switch - Right Rear
Test for less than 10 ohms between the test points: Ground circuit terminal 5 and 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 and 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.
- If less than 10 ohms : Go to nexr step.
Ignition - On / Vehicle - In Service Mode
Verify a test lamp turns On between the test points: B+ circuit terminal 8 and 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 and 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/S79RR Window Switch - Right Rear
- If the test lamp turns On : Go to next step.
Ignition/Vehicle - Off
Connect the electrical connector.S79LR Window Switch - Left Rear/S79RR Window Switch - Right Rear
Disconnect the appropriate electrical connector: M74LR Window Motor - Left Rear/M74RR Window Motor - Right Rear
Connect a test lamp between the test points: Control circuit terminal 1 & Control circuit terminal 2
Ignition - On / Vehicle - In Service Mode
Perform the scan tool control function: Window Motor
Verify the test lamp state:

Window Motor - Stop = Test lamp Off

Window Motor - Up = Test lamp On

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/S79RR Window Switch - Right Rear
3. Ignition - On / Vehicle - In Service Mode
4. Test for less than 1V between the test points:
  - Control circuit terminal 1 at Component harness and Ground
  - Control circuit terminal 2 at Component harness and Ground
  - If 1V or greater - Repair the short to voltage on the circuit.
  - If less than 1V: Continue to 5.
5. Ignition/Vehicle - Off
6. Test for infinite resistance between the test points:
  - Control circuit terminal 1 at Component harness and Ground
  - Control circuit terminal 2 at Component harness and Ground
  - If less than infinite resistance - Repair the short to ground on the circuit.
  - If infinite resistance
7. Test for less than 2 ohms between the test points:
  - Control circuit terminal 1 at Component harness & Control circuit terminal 7 at M74LR Window Motor - Left Rear
  - Control circuit terminal 2 at Component harness & Control circuit terminal 6 at M74LR Window Motor - Left Rear
  - Control circuit terminal 1 at Component harness & Control circuit terminal 7 at M74RR Window Motor - Right Rear
  - Control circuit terminal 2 at Component harness & Control circuit terminal 6 at M74RR Window Motor - Right Rear
    - If 2 ohms or greater - Repair the open/high resistance in the circuit.
    - If less than 2 ohms - Replace the component: M74LR Window Motor - Left Rear/M74RR Window Motor - Right Rear.
- If the specified state : Go to next step.
Test or replace the component: M74LR Window Motor - Left Rear/M74RR Window Motor - Right Rear