Test B: The Power Liftgate Is Inoperative From an Individual Switch

PINPOINT TEST B: THE POWER LIFTGATE IS INOPERATIVE FROM AN INDIVIDUAL SWITCH

B1-B4:

B4-B5:

B6-B9:

B10-B13:

B13-B14:

B15-B16:

Normal Operation
If the power liftgate (PLG) is operated from the PLG control switch (instrument panel), circuit CPR63 (GY/YE) is grounded by the open/close switch, which signals the PLG module of the open/close request. If the PLG is operated from the rear switch (quarter trim panel), circuit CPR70 (GN) is grounded by the rear switch through circuit GD149 (BK/GY). If the PLG is operated from the liftgate handle, the smart junction box (SJB) sends a voltage signal to the PLG module through circuit CPL10 (GN/WH).

Possible Causes
- SJB module diagnostic trouble code (DTC) B2666 liftgate release switch circuit failure
- SJB module DTC B273A liftgate release output circuit short to ground
- SJB module DTC B273B liftgate release output circuit open or short to battery
- PLG module DTC B1105 rear open/close switch active during self-test
- PLG module DTC B2703 open/close switch active during self-test
- Open, short to power or short to ground in circuit CPL10 (GN/WH)
- Open in circuit GD138 (BK/WH) or GD149 (BK/GY)
- Open or short to ground in circuit CPR70 (GN) or CPR63 (GY/YE)
- PLG control switch (instrument panel)
- PLG rear control switch (quarter trim panel)
- PLG module
- SJB