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Home >> Jeep >> 1994 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft System >> Testing >> Test 16A - Repairing Liftgate Key Cylinder Circuit

Test 16A - Repairing Liftgate Key Cylinder Circuit

NOTE: For connector terminal identification, refer to CONNECTOR IDENTIFICATION  . For wiring diagrams, see WIRING DIAGRAM  .
NOTE: Perform TEST 1A  before proceeding with TEST 16A.
  1. Using DRB, read door key cylinder switch status. If DRB displays CIRCUIT CLOSED, go to TEST 15B  . If DRB does not display CIRCUIT CLOSED, disconnect liftgate key cylinder switch connector. Inspect connector, clean and repair as needed and go to next step.
  2. Connect jumper wire across liftgate key cylinder switch connector terminals No. 1 and 2. Using DRB, read door key cylinder switch status. If DRB does not display CIRCUIT CLOSED, go to next step. If DRB displays CIRCUIT CLOSED, replace liftgate key cylinder switch. Perform TEST VER-1  .
  3. Connect jumper wire between liftgate key cylinder switch connector terminal No. 2 (Violet/Yellow wire) and ground. Using DRB, read door key cylinder switch status. If DRB displays CIRCUIT CLOSED, repair open in liftgate key cylinder switch ground circuit (Black wire). Perform TEST VER-1  . If DRB does not display CIRCUIT CLOSED, go to next step.
  4. Without disconnecting VTA module connector, using a jumper wire backprobe VTA module connector terminal No. 7 (Violet/Yellow wire) to ground. Using DRB, read door key cylinder switch status. If DRB displays CIRCUIT CLOSED, repair VTA module open disarm sense circuit (Dark Green/Orange wire). Perform TEST VER-1  . If DRB does not display CIRCUIT CLOSED, replace VTA module. See VEHICLE THEFT ALARM MODULE  under REMOVAL & INSTALLATION. Perform TEST VER-1  .