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

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

I1-I2:

I3-I6:

I6-I8:

I8-I10:

I10-I11:

I11-I13:

I14:

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 GD149 (BK/GY). When the SJB detects a request from the liftgate release switch, the SJB provides voltage through circuit CPL10 (BN/BU) to the liftgate latch (vehicles equipped with a manual liftgate) or the power liftgate module (vehicles equipped with a power liftgate). For vehicles with a manual liftgate, ground for the liftgate latch is provided through circuit GD149 (BK/GY).

DTC B2666 Liftgate Release Switch Circuit Failure - is a continuous or on-demand DTC that sets when the SJB detects a short to ground on the liftgate release switch input circuit CPL45 (BN). The DTC is also set if the liftgate release switch is actuated 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 CPL10 (GN/WH).

DTC B273B Liftgate Release Output Circuit Open or Shorted to Battery Voltage - is a continuous or on-demand DTC that sets when the SJB detects an open or short to voltage on the liftgate latch release output circuit CPL10 (GN/WH).

This pinpoint test is intended to diagnose the following:
- Wiring, terminals and connectors
- Liftgate release switch
- Liftgate latch
- Power liftgate module
- SJB