Test G: The Liftgate Latch Release Is Inoperative/Does Not Operate Correctly

PINPOINT TEST G: THE LIFTGATE LATCH RELEASE IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Normal Operation
The smart junction box (SJB) does not release the liftgate unless the doors have been unlocked electronically or the request is initiated from a remote keyless entry (RKE) transmitter.

The SJB sends a voltage signal to the liftgate release switch through circuit CPL45 (BN). When the switch is activated, the signal is routed to ground through circuit GD150 (BK/WH). When the SJB detects a request from the liftgate release switch, the SJB provides voltage through circuit CPL10 (BN/BU) to the liftgate latch release motor (integral to the liftgate latch) (vehicles with a manual liftgate) or the liftgate/trunk module (LTM) (vehicles equipped with a power liftgate). For vehicles with a manual liftgate, ground for the liftgate latch is provided through circuit GD150 (BK/WH).

- DTC B2666 (Liftgate Release Switch Circuit Failure) - is a continuous and on-demand DTC that sets when the SJB detects a short to ground on the liftgate release switch input circuit. This DTC may also set if the liftgate release switch is pressed for longer than 2 minutes.
- DTC B273A (Liftgate Release Output Circuit Shorted to Ground) - is a continuous DTC that sets when the SJB detects a short to ground on the liftgate latch release output circuit.
- DTC B273B (Liftgate Release Output Circuit Open or Shorted to Battery Voltage) - is a continuous and on-demand DTC that sets when the SJB detects an open or short to voltage on the liftgate latch release output circuit.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Liftgate release switch
- Liftgate release motor (integral to the liftgate latch)
- LTM
- SJB

G1-G3:

G4-G6:

G6-G8:

G8-G10:

G10-G12:

G12-G15: