B1948
B1948-POWER LIFTGATE PINCH SENSOR 2 CIRCUIT HIGHB1948 - Power Liftgate Pinch Sensor 2 Circuit High:
WHEN MONITORED
Whenever the Power Liftgate Module is awake.
SET CONDITION
The power liftgate module has detected the right pinch sensor circuit voltage is above 4.7 volts for over 10 seconds.
POSSIBLE CAUSES
- (Q901) Logic ground open
- (Q78) Right pinch sensor signal wire open
- (Q78) Right pinch sensor signal short to voltage
- Right pinch sensor
- Power liftgate module
Diagnostic Test
1.
NOTE: The vehicle should be at room temperature when this test is performed DTC PRESENT
With the scan tool, record DTC's and any liftgate inhibitors.
Erase DTC's
Turn the ignition off, wait 10 seconds, then turn the ignition on.
Operate the liftgate several times.
With the scan tool, read DTCs.
Q: Does the scan tool display B1948-POWER LIFTGATE PINCH SENSOR 2 CIRCUIT HIGH?
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.
Remove the Liftgate trim panel.
Disconnect the Liftgate Right Pinch Sensor connector.
Measure the resistance between ground and the (Q901) Logic Ground circuit in the Liftgate Right Pinch Sensor connector.
Q: Is the resistance below 5.0 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. (Q78) RIGHT PINCH SENSOR SIGNAL CIRCUIT OPEN
Turn the ignition on.
Measure the voltage between the (Q901) Logic Ground circuit and the (Q78) Right Pinch Sensor Signal circuit in the Right Pinch Sensor connector.
Q: Is the voltage below 5.3 volts?
YES: Go To 4
NO: Go To 5
4. (Q78) RIGHT PINCH SENSOR SIGNAL WIRE OPEN
Turn the ignition off.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance of the (Q78) Right Pinch Sensor Signal circuit between the Power Liftgate Module C2 connector and the Right Pinch Sensor connector.
Q: Is the resistance below 5.0 ohms?
YES: Replace the Power Liftgate Module. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Repair the (Q78) Right Pinch Sensor Signal wire for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
5. (Q78) RIGHT PINCH SENSOR SIGNAL SHORT TO VOLTAGE
Measure the voltage between the (Q901) Logic Ground circuit and the (Q78 ) Right Pinch Sensor Signal circuit in the Right Pinch Sensor connector.
Q: Is the voltage above 5.2 volts?
NO: Replace the Right Pinch Sensor. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
YES: Repair the Right Pinch Sensor Signal wire for a short to battery. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test