B1883-POWER LIFTGATE POSITION SENSOR 1 CIRCUIT PERFORMANCE
For a complete wiring diagram Refer to Section 8W
- 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 1 CIRCUIT SHORTED TO (Q205) POSITION SENSOR SIGNAL 2 CIRCUIT |
| (Q901) LOGIC GROUND CIRCUIT OPEN |
| (Q203) POSITION SENSOR SUPPLY CIRCUIT OPEN |
| (Q203) POSITION SENSOR SUPPLY CIRCUIT SHORT TO GROUND |
| (Q203) POSITION SENSOR SUPPLY CIRCUIT SHORT TO VOLTAGE |
| POWER LIFTGATE DRIVE UNIT |
| POWER LIFTGATE MODULE |
Diagnostic Test
1. CHECK FOR DTCSWith the scan tool, record DTCs.
Erase DTCs.
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.
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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2. (Q901) LOGIC GROUND OPEN
Turn the ignition off.
Disconnect the Power Liftgate Drive Unit connector.
Measure the resistance between the (Z800) Ground and the (Q901) Logic Ground circuit in the Power Liftgate Drive Unit connector.
Is the resistance below 9.5 ohms?
Yes
- Go To 3
No
NOTE: The (Q901) Logic Ground circuit is grounded through the Power Liftgate Module and the (Z800) Ground circuit.
Repair the (Q901) Logic Ground circuit for an open.- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
3. (Q204) POSITION SENSOR SIGNAL 1 CIRCUIT SHORT TO GROUND
Disconnect the Power Liftgate Module C1 harness connector.
Measure the resistance between ground and the (Q204) Position Sensor Signal 1 circuit.
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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
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 .
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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
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 Power Liftgate Module C1 harness connector and the Power Liftgate Drive Unit harness connector.
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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
Yes
- Go To 6
6. (Q203) POSITION SENSOR SUPPLY CIRCUIT OPEN
Measure the resistance of the (Q203) Position Sensor Supply circuit between the Power Liftgate Module C1 connector and the Power Liftgate Drive Unit connector.
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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
7. (Q203) POSITION SENSOR SUPPLY CIRCUIT SHORT TO GROUND
Measure the resistance between ground and the (Q203) Position Sensor Supply circuit.
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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
8. (Q203) POSITION SENSOR SUPPLY CIRCUIT SHORT TO VOLTAGE
Turn the ignition on.
Measure the voltage between the (Q901) Logic Ground circuit and the (Q203) Position Sensor Supply circuit in the Power Liftgate Drive Unit connector.
Is the voltage above 5.5 volts?
Yes
- Repair the (Q203) Position Sensor Supply circuit for a short to voltage. If the power liftgate is inoperative after repairing the (Q203) Position Sensor Supply circuit, replace the Power Liftgate Drive Unit in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Go to 9
9. (Q204) POSITION SENSOR SIGNAL 1 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.
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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Go To 10.
10. POWER LIFTGATE MODULE
Reconnect the Power Liftgate Module C1 harness connector.
Reconnect the Power Liftgate Module C2 harness connector.
Turn the ignition on.
Measure the voltage of the (Q204) Position Sensor Signal 1 circuit and the (Q203) Position Sensor Supply circuit ground in the Power Liftgate Drive Unit harness connector.
Is the voltage approximately 5.0 volts for both measurements?
Yes
- Replace the Power Liftgate Drive Unit in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Replace the Power Liftgate Module in accordance with service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).