4C

4C-DRIVER WINDOW HALL EFFECT FAILURE





For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
Whenever the driver window is operating.

- Set Condition:
The hall effect sensor, in the window motor, sends an alternating signal (open/closed) to the BCM whenever the motor is running. When there is no hall effect signal to the BCM from the window motor, this code will set.





Diagnostic Test

1. DTC PRESENT

NOTE: If there are any other Driver Power Window DTC's present, diagnose those DTC's before proceeding with this code.

Turn the ignition on.
With the scan tool, erase DTCs.
Cycle the ignition switch from Off to Run.
Try to operate the Driver Window Motor several times.
With the scan tool, read DTCs.
Does the scan tool display 4C-DRIVER WINDOW HALL EFFECT FAILURE?

Yes

- Go To 2

No

- The condition that caused the code to set is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. MOTOR OPERATIONAL
Turn the ignition on.
With the scan tool, actuate the Driver Window Down and Up.
Does the Driver Window go Up and Down?

Yes

- Go To 3

No

- Go To 8

3. WINDOW HALL EFFECT GROUND WIRE OPEN




Turn the ignition off.
Disconnect the Window Motor connector.
Measure the resistance between ground and the (Z912) Ground circuit.
Is the resistance below 5.0 ohms?

Yes

- Go To 4

No

- Repair the (Z912) Window Hall Effect Ground circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

4. (M1) IOD - B(+) WIRE OPEN




Turn the ignition on.
Measure the voltage between the (M1) IOD - B(+) circuit and ground.
Is the voltage above 10.0 volts?

Yes

- Go To 5

No

- Repair the (M1) IOD - B(+) circuit for an open from the BCM.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

5. HALL EFFECT SWITCH OPEN




With the scan tool in Inputs/Outputs, read the DRV WINDOW HALL state.
While observing the scan tool, momentarily connect and disconnect a jumper wire between the (Q301) Driver Window Hall Signal circuit and the (Z912) Ground circuit.
Does the scan tool display a toggle between OPEN and CLOSED?

Yes

- Replace the Window Motor.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 6

6. DRIVER WINDOW HALL SIGNAL WIRE OPEN




Turn the ignition off.
Disconnect the BCM C3 harness connector.
Measure the resistance of the (Q301) Driver Window Hall Signal circuit between the Motor connector and the BCM C3 connector.
Is the resistance below 5.0 ohms?

Yes

- Go To 7

No

- Repair the (Q301) Driver Window Hall Signal circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

7. (Q301) DRIVER WINDOW HALL SIGNAL WIRE SHORT TO GROUND




Turn the ignition off.
Measure the resistance between ground and the (Q301) Driver Window Hall Signal circuit.
Is the resistance below 1000.0 ohms?

Yes

- Replace the Body Control Module.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Repair the (Q301) Driver Window Hall Signal circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

8. DRIVER WINDOW MOTOR OPEN




Turn the ignition off.
Disconnect the Driver Window Motor connector.
Turn the ignition on.
Connect a 12-volt test light between the (Q11) Driver Window Up Driver and the (Q21) Driver Window Down Driver circuits in the motor connector.
Press the Driver Window Switch UP and DOWN.
Does the test light illuminate brightly when the switch is in either position?

Yes

- Replace the Driver Power Window Motor.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 9

9. (Q21) DRIVER WINDOW DOWN DRIVER WIRE OPEN




Turn the ignition off.
Disconnect the BCM C4 connector.
Measure the resistance of the (Q21) Driver Window Down Driver circuit between the BCM C4 connector and the Motor connector.
Is the resistance below 5.0 ohms?

Yes

- Go To 10

No

- Repair the Driver Window Down Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

10. (Q11) DRIVER WINDOW UP DRIVER WIRE OPEN




Measure the resistance of the (Q11) Driver Window Up Driver circuit between the BCM C4 connector and the Motor connector.
Is the resistance below 5.0 ohms?

Yes

- Replace the Body Control Module.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Repair the (Q11) Driver Window Up Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test