Pinpoint Test E : The Power Liftgate Reverses During A Power Close Operation

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

E1 CHECK THE RGTM (REAR GATE TRUNK MODULE) LATCH AND PAWL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

Using a diagnostic scan tool, view RGTM Parameter Identifications (PIDs).

Using a diagnostic scan tool, monitor the following RGTM Parameter Identifications (PIDs):
- Latch_Primary_Switch (Ltch_Prim_Sw)
- Latch_Secondary_Switch (Ltch_Sec_Sw)
- Latch_Pawl_Switch (Ltch_Pwl_Sw)

NOTE: The liftgate is in the primary position when the liftgate is in the full closed position. The liftgate is in the unlatch position when the liftgate is open and completely out of the striker.

Begin with the liftgate in the open position, then slowly close the liftgate to the secondary latch (first click) and then primary latch (second click) positions.

Liftgate Latch Position	Ltch_Prim_Sw	Ltch_Sec_Sw	Ltch_Pwl_Sw
Fully unlatched	Active	Active	Active
Secondary (first click)	Active	Inactive	Active
Primary (second click)	Inactive	Inactive	Inactive

Do the switch states agree with the table?

Yes

GO to E2

No	GO to Pinpoint Test K

E2 CHECK THE MANUAL OPERATION OF THE LIFTGATE
- Ignition ON.
- Turn the power liftgate off (disable) from the message center.
- While manually opening and closing the liftgate, check the liftgate for:
  - Liftgate/wedge alignment
  - Liftgate strut operation (strut should hold or push liftgate open)
  - Power liftgate motor (should move freely while manually opening and closing liftgate and be securely mounted to the liftgate and bracket)
  - Power liftgate latch (should latch completely)
Does the liftgate open and close correctly?

Yes GO to Pinpoint Test K

No REPAIR as necessary.