Test 11A - Repairing Liftgate Latch Sense Circuit
NOTE:
For connector terminal identification, refer to CONNECTOR IDENTIFICATION
. For appropriate wiring diagram, see appropriate chassis wiring diagram in the WIRING DIAGRAMS
article.
- Ensure all doors, hood and liftgate are properly closed and aligned. VTA system should still be diagnostic mode.
- Using DRB-II, read DOOR AJAR status screen. If screen displays closed (CLSD), go to TEST 9A . If status screen does not display closed (CLSD), open liftgate and turn on cargo light. If horn sounds, system is functioning properly. Cargo light switch must be in ON position to fully arm VTA system. Return back to TEST 1A .
- If horn does not sound, disconnect liftgate latch switch connectors. Using DRB-II, check resistance of latch switch ground wire. If resistance is more than 5 ohms, repair open latch switch ground wire. Perform TEST VER-1 . If resistance is less than 5 ohms, connect jumper wire between liftgate latch switch connectors.
- Using DRB-II, read DOOR AJAR status. If status screen displays closed (CLSD), replace liftgate latch switch. Perform TEST VER-1 . If status screen does not display closed (CLSD), connect jumper wire between ground (Black wire) and latch switch sense (Violet/Yellow wire).
- Using DRB-II, read DOOR AJAR status. If screen does not display closed (CLSD), replace VTA module. If status screen does display closed (CLSD), disconnect VTA module. Using DRB-II, check liftgate latch sense circuit voltage at terminal No. 1 (Violet/Yellow wire) of VTA module connector. If voltage is more than 10 volts, replace cargo light switch. Perform TEST VER-1 . If voltage is less than 10 volts, repair open liftgate latch sense wire. Perform TEST VER-1 .