B1883

B1883-POWER LIFTGATE POSITION SENSOR 1 CIRCUIT PERFORMANCE

B1883 - Power Liftgate Position Sensor 1 Circuit Performance:

WHEN MONITORED
Whenever the Power Liftgate Module is power opening or closing.

SET CONDITION
When the Power Liftgate Module senses the (Q204) Position Sensor Signal 1 circuit not pulsing during motor operation, this code will set.

POSSIBLE CAUSES
- (Q204) Position sensor signal 1 circuit short to ground
- (Q204) Position sensor signal 1 circuit open
- Q204) Position sensor signal 1 circuit short to voltage
- Q204) Position sensor signal circuit shorted to (Q205) position sensor signal 2 circuit
- (Q901) Logic ground open
- (Q203) Position sensor supply circuit open
- (Q203) Position sensor supply circuit short to ground
- Power liftgate drive unit
- Power liftgate module

Diagnostic Test

1. DTC PRESENT

With the scan tool, record DTC's.
Erase DTC's
Turn the ignition off, wait 10 seconds, then turn the ignition on.
If possible, operate the liftgate several times.
With the scan tool, read DTCs.

Q: Does the scan tool display B1883-POWER LIFTGATE POSITION SENSOR 1 CIRCUIT PERFORMANCE?

YES: Go To 2
NO: Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. (Q901) LOGIC GROUND OPEN




Turn the ignition off.
Disconnect the Power Liftgate Drive Unit connector.
Measure the resistance between the (Z918) Ground and the (Q901) Logic Ground circuit in the Power Liftgate Drive Unit connector.

Q: Is the resistance below 9.5 ohms?

YES: Go To 3
NO: Repair the (Q901) Logic Ground circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

3. (Q204) POSITION SENSOR SIGNAL 1 CIRCUIT SHORT TO GROUND




Disconnect the Power Liftgate Module C1 connector.
Measure the resistance between ground and the (Q204) Position Sensor Signal 1 circuit

Q: Is the resistance below 10000.0 ohms?

YES: Repair the (Q204) Position Sensor Signal 1 circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 4

4. (Q204) POSITION SENSOR SIGNAL 1 CIRCUIT SHORT TO VOLTAGE




Turn the ignition on.
Measure the voltage between ground and the (Q204) Position Sensor Signal 1 circuit

Q: Is there any voltage present?

YES: Repair the (204) Position Sensor Signal 1 circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 5

5. (Q204) POSITION SENSOR SIGNAL 1 CIRCUIT OPEN




Turn the ignition off.

Measure the resistance of the (Q204) Position Sensor Signal 1 circuit between the PLG C1 connector and the Drive Unit connector.

Q: Is the resistance below 5.0 ohms?

NO: Repair the (Q204) Position Sensor Signal 1 circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
YES: Go To 6

6. (Q203) POSITION SENSOR SUPPLY CIRCUIT OPEN




Disconnect the Power Liftgate Module C1 connector.

Measure the resistance of the (Q203) Position Sensor Supply circuit between the Power Liftgate Module C1 connector and the Power Lift-gate Drive Unit connector.

Q: Is the resistance below 5.0 ohms?

YES: Go To 7
NO: Repair the (Q203) Position Sensor Supply circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

7. (Q203) POSITION SENSOR SUPPLY CIRCUIT SHORT TO GROUND




Disconnect the Power Liftgate Module C1 connector.
Measure the resistance between ground and the (Q203 Position Sensor Supply circuit.

Q: Is the resistance below 10000.0 ohms?

NO: Go To 8
YES: Repair the (Q203) Position Sensor Supply circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

8. Q204) POSITION SENSOR SIGNAL CIRCUIT SHORTED TO (Q205) POSITION SENSOR SIGNAL 2 CIRCUIT




Measure the resistance between the (Q204) Position Sensor Signal 1 circuit and the (Q205) Position Sensor Signal 2 circuit

Q: Is the resistance below 10000.0 ohms?

YES: Repair the (Q204) Position Sensor Signal 1 circuit for a short to the (Q205) Position Sensor Signal 2 circuit. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 9

9. POWER LIFTGATE MODULE




Reconnect the Power Liftgate Module C1 connector.
Turn the ignition on.
Measure the voltage between the (Q204) Position Sensor Signal 1 circuit and ground in the Drive Unit connector.

Q: Is the voltage approximately 5.0 volts?

YES: Replace the Power Liftgate Drive Unit. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Power Liftgate Module. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test