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Home >> Dodge and Ram >> 1993 >> Caravan C/V, Van Cargo Extended >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Body Control Computer >> Connector Identification >> Test 43A - Diagnosing Door Ajar Circuit (Liftgate)

Test 43A - Diagnosing Door Ajar Circuit (Liftgate)

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION. For wiring diagrams, see WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section. Perform TEST VER 1A after each repair.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
  1. Ensure liftgate is aligned properly. Close liftgate. Turn ignition switch to ON position. Using DRB-II, read liftgate ajar switch status. If DRB-II does not display GATE AJAR:OPEN, go to step 5). If DRB-II displays GATE AJAR:OPEN, open liftgate. Using DRB-II, read gate ajar switch status. If DRB-II displays GATE AJAR:CLOSED, retest system.
  2. If DRB-II does not display GATE AJAR:CLOSED, disconnect liftgate ajar switch connector. Connector is located at bottom of liftgate behind trim panel. Check connector, and clean or repair connector as necessary. Connect a jumper wire between liftgate ajar sense circuit at liftgate ajar switch connector (Tan/Black wire) and ground.
  3. If DRB-II displays GATE AJAR:CLOSED, replace liftgate ajar switch. If DRB-II does not display GATE AJAR:CLOSED, gain access to body controller. Body controller is located under left side of instrument panel.
  4. Connect a jumper wire between liftgate ajar sense circuit at Natural body controller connector terminal No. 4 (Tan/Black wire) and ground. If DRB-II displays GATE AJAR:CLOSED, repair open in Tan/Black wire. If DRB-II does not display GATE AJAR:CLOSED, replace body controller.
  5. Disconnect liftgate ajar switch connector. Connector is located at bottom of liftgate behind trim panel. Check connector, and clean or repair connector as necessary. If DRB-II displays GATE AJAR:OPEN, replace liftgate ajar switch.
  6. If DRB-II does not display GATE AJAR:OPEN, turn ignition switch to OFF position. Disconnect Natural body controller connector. Body controller is located under left side of instrument panel. Check connector, and clean or repair connector as necessary.
  7. Using DRB-II in ohmmeter mode, check resistance of liftgate ajar sense circuit at Natural body controller connector terminal No. 4 (Tan/Black wire). If resistance is less than 5 ohms, repair short to ground in Tan/Black wire. If resistance is more than 5 ohms, replace body controller.
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