LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 1994 >> Wrangler Renegade, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Body Control Computer >> Self-Diagnostic Tests >> Test 49A - Repairing Body Control Module (BCM) No Response
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test 49A - Repairing Body Control Module (BCM) No Response

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagram, see WIRING DIAGRAMS article in this section.
CAUTION: Always turn ignition off prior to disconnecting or connecting any module connector.
  1. Turn ignition off. Disconnect Blue Body Control Module (BCM) connector. BCM is located behind center console. Check connector, and clean or repair connector as necessary. Perform TEST VER-1B  . If connector is okay, go to next step.
  2. Leave Data Link Connector (DLC) connected in following steps. Using an external ohmmeter, check resistance of CCD BUS positive circuit (Violet/Brown wire) between Blue BCM connector terminal No. 14 and DLC terminal No. 4. If resistance is more than 5 ohms, repair open Violet/Brown wire. Perform TEST VER-1B  . If resistance is less than 5 ohms, go to next step.
  3. Check resistance on CCD BUS negative circuit (White/Black wire) between Blue BCM connector terminal No. 15 and DLC terminal No. 3. If resistance is more than 5 ohms, repair open White/Black wire. Perform TEST VER-1B  . If resistance is less than 5 ohms, go to next step.
  4. Using DRB in ohmmeter mode, check resistance of signal ground circuit (Black/Light Green wire) at Blue BCM connector terminal No. 13. If resistance is more than 5 ohms, repair open Black/Light Green wire. Perform TEST VER-1B  . If resistance is less than 5 ohms, go to next step.
  5. Using DRB in voltmeter mode, check voltage on fused ignition feed circuit (Dark Blue/White wire) at Blue BCM connector terminal No. 12. If voltage is less than 10 volts, go to TEST 49B  . If voltage is more than 10 volts, go to next step.
  6. Check voltage of fused battery feed circuit (Pink wire) at Blue BCM connector terminal No. 16. If voltage is more than 10 volts, replace BCM. Perform TEST VER-1B  . If voltage is less than 10 volts, go to next step.
  7. Remove and inspect IOD fuse. If fuse is blown, go to TEST 49C  . If fuse is okay, reinstall IOD fuse and go to next step.
  8. Check voltage of battery feed circuit (Black/Red wire) at IOD fuse. If voltage is more than 10 volts, repair open Pink wire. Perform TEST VER-1B  . If voltage is less than 10 volts, repair open Black/Red wire. Perform TEST VER-1B  .
scientia non olet · About LEMON Manuals