B197B

B197B - POWER LIFTGATE OPEN DIRECTION - PAWL SWITCH PERFORMANCE

B197B - Power Liftgate Open Direction - Pawl Switch Performance:

WHEN MONITORED
Whenever the power liftgate in performing an open operation.

SET CONDITION
The pawl switch was not detected as returning to ground after a latch release operation.

POSSIBLE CAUSES
- Binding liftgate
- (Q901) Logic ground circuit open
- (Q60) Liftgate pawl switch sense wire open
- (Q60) liftgate pawl switch sense wire short to voltage
- Power liftgate latch

Diagnostic Test

1. DTC PRESENT

With the scan tool, record and erase DTC's.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
Operate the power liftgate several times if possible.
With the scan tool, read ACTIVE DTCs.

Q: Does the scan tool display B197B-POWER LIFTGATE OPEN DIRECTION - PAWL SWITCH PERFORMANCE?

YES: Go To 2
NO: Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition. Operate the door several times and check for any binding or other obstructions. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. BINDING LIFTGATE

Examine the liftgate for proper fit and alignment, loose/hard or torn seals, misaligned latch striker or anything that would cause an obstruction to proper operation.

Manually operate the liftgate of a known good vehicle and notice the effort needed to open and close.
Compare the effort needed on the disabled liftgate.
Especially notice the effort needed to unlatch and close the liftgate.

Q: Does it take more effort to operate the liftgate than it should?

YES: Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3

3. (Q60) LIFTGATE PAWL SWITCH SENSE SHORT TO VOLTAGE




Disconnect the Power Liftgate Latch connector.
Measure the voltage between the (Q901) Logic Ground circuit and the (Q60) Liftgate Pawl Switch Sense circuit in the Liftgate Latch connector.
Wiggle the harness while observing the voltmeter.

Q: Is there any voltage present?

NO: Go To 4
YES: Repair the (Q60) Liftgate Pawl Switch Sense circuit for a short to. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

4. (Q901) LOGIC GROUND WIRE OPEN




Turn the ignition off.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance of the (Q901) Logic Ground circuit between the PLG C2 connector and the Liftgate Latch connector.
Wiggle the harness while observing the ohmmeter.

Q: Is the resistance below 2.0 ohms?

YES: Go To 5
NO: Repair the (Q901) Logic Ground wire for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

5. (Q60) LIFTGATE PAWL SWITCH SENSE WIRE OPEN




Measure the resistance of the (Q60) Liftgate Pawl Switch Sense wire between the PLG C2 connector and the Liftgate Latch connector.
Wiggle the harness while observing the ohmmeter.

Q: Is the resistance below 2.0 ohms?

YES: Replace the Power Liftgate Latch. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Repair the (Q60) Liftgate Pawl Switch Sense wire for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test