B197D

B197D - POWER LIFTGATE LATCH CINCH - PAWL SWITCH PERFORMANCE

B197D - Power Liftgate Latch Cinch - Pawl Switch Performance:

WHEN MONITORED
Whenever the power liftgate in performing a cinching operation.

SET CONDITION
The pawl switch was not detected as returning to ground during the transition between secondary and primary cinch operation. The liftgate may not be fully cinched during this condition. The liftgate may cinch to primary but not be fully seated and may pop off back to secondary.

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

Diagnostic Test

1. DTC PRESENT

NOTE: This DTC will only set after the cinching operation. This may make it difficult to reproduce.

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 B197D-POWER LIFTGATE LATCH CINCH - 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. Pay particular attention to the cinch and latch operations.
Compare the effort needed on the disabled 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. (Q901) LOGIC GROUND WIRE OPEN




Turn the ignition off.
Disconnect the Power Liftgate C2 connector.
Disconnect the Power Liftgate Latch 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 4
NO: Repair the (Q901) Logic Ground wire for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

4. (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: Go To 5
NO: Repair the (Q60) Liftgate Pawl Switch Sense wire for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

5. (Q60) LIFTGATE PAWL SWITCH SENSE WIRE SHORT TO GROUND




Reconnect all Power Liftgate Module connectors before proceeding.
Measure the resistance between the (Q901) Logic Ground and the (Q60) Liftgate Pawl Switch Sense circuit in the latch connector.
Wiggle the harness while observing the ohmmeter.

Q: Is the resistance below 1000.0 ohms?

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