B197C

B197C-POWER LIFTGATE CLOSE DIRECTION- PAWL SWITCH PERFORMANCE





For a complete wiring diagram refer to Diagrams/Electrical

- When Monitored:

Whenever the power liftgate in performing a closing operation.

- Set Condition:

The pawl switch was detected as open when the Power Liftgate Drive Unit Position Sensor count is greater than 40.





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.

Does the scan tool display B197C-POWER LIFTGATE CLOSE 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.

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 harness connector.

Measure the voltage between the (Q901) Logic Ground circuit and the (Q60) Liftgate Pawl Switch Sense circuit in the Liftgate Latch harness connector.

Wiggle the harness while observing the voltmeter.

Is there any voltage present?

No

- Go To 4

Yes

- Repair the (Q60) Liftgate Pawl Switch Sense circuit for a short to voltage.
- 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 harness connector.

Measure the resistance of the (Q901) Logic Ground circuit between the PLG Module C2 harness connector and the Liftgate Latch harness connector.

Wiggle the harness while observing the ohmmeter.

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 Module C2 harness connector and the Liftgate Latch harness connector.

Wiggle the harness while observing the ohmmeter.

Is the resistance below 2.0 ohms?

Yes

- Go To 6

No

- Repair the (Q60) Liftgate Pawl Switch Sense wire for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

6.POWER LIFTGATE MODULE

With the scan tool under PLGM, monitor the PAWL SWITCH STATUS.

Using a screwdriver, click the latch to the first detent while observing the scan tool.

Unlatch the latch by pressing the handle switch and observe the scan tool for a change of state.

Repeat this step several times while moving the liftgate in different positions and wiggling the harness to check for an intermittent open circuit.

Did the scan tool show the switch state changing correctly every time?

Yes

- Check the Power Liftgate Module and Power Liftgate Latch harness and connectors for damage, and repair as necessary. If the Power Liftgate Module and Power Liftgate Latch harness and connectors are OK, replace the Power Liftgate Module.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the Power Liftgate Latch.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test