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Home >> Jeep >> 1996 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> External Pages >> Different car >> Section 32 (A/C-Heater System - Automatic) >> Trouble Shooting >> Test 23A - Aspirator Motor Circuit

Test 23A - Aspirator Motor Circuit

WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Perform TEST 17A before proceeding with this test.
  1. Turn off courtesy light switch. Remove trim plate over glove box. If both seals between motor and air duct, and between motor and trim plate are intact, go to next step. Replace seals if missing or damaged. Perform VERIFICATION TEST.
  2. Turn ignition off. Close all doors. Wait 2 minutes. Open driver's door. Observe aspirator motor for at least one minute. If motor does not run for about 30 seconds, then stop, go to next step. If motor operation is as specified, system is okay. Perform VERIFICATION TEST.
  3. If courtesy lights operate properly, go to next step. If courtesy lights do not operate properly, repair as necessary. Perform VERIFICATION TEST.
  4. If aspirator motor runs at all times, go to next step. If motor does not run all the time, go to step 6).
  5. Unplug Black connector from BCM, located above right kick panel. If aspirator motor stops running, replace BCM. Perform VERIFICATION TEST. If aspirator does not stop running, repair short to ground on Yellow/Dark Green wire between aspirator motor and BCM. Perform VERIFICATION TEST.
  6. Unplug Black connector from BCM, located above right kick panel. Unplug aspirator motor. With DRB in voltmeter mode, probe cavity. 1 (Pink wire) at in-car temperature sensor connector. If battery voltage exists, go to next step. If battery voltage does not exist, repair open Pink wire to junction block.
  7. With DRB in voltmeter mode, probe cavity No. 2 (Yellow/Dark Green wire) at in-car temperature sensor connector. If battery voltage does not exist, go to next step. If battery voltage exists, go to step 10).
  8. Using external ohmmeter, measure resistance of Yellow/Dark Green wire between Black BCM connector and in-car temperature sensor connector. If resistance is less than 5 ohms, go to next step. If resistance is not less than 5 ohms, repair open Yellow/Dark Green wire. Perform VERIFICATION TEST.
  9. Reconnect wiring to aspirator motor. Connect jumper wire between Yellow/Dark Green wire at BCM Black connector and ground. Inspect aspirator motor fan. If motor runs, replace BCM. Perform VERIFICATION TEST. Replace motor if it does not run. Perform VERIFICATION TEST.
  10. Using DRB, read BCM information. If display is BODY COMPUTER VERSION 1993, repair short to voltage on Yellow/Dark Green wire and replace BCM. Perform VERIFICATION TEST. If display is anything else, repair short to voltage on Yellow/Dark Green wire. Perform VERIFICATION TEST.
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