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Home › Dodge and Ram › 1993 › Grand Caravan Base › Repair and Diagnosis › Engine Performance › System › Engine Controls - Tests W/Codes - Body Control Computer › Connector Identification › Test 48B - Electronic Instrument Cluster No Response

Test 48B - Electronic Instrument Cluster No Response

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. Remove and inspect fuse No. 15 (ignition feed circuit). If fuse is open, go to step 5). If fuse is okay, install fuse. Turn ignition switch to ON position. Using DRB-II in voltmeter mode, check voltage of ignition feed circuit (Dark Blue wire) at fuse No 15.
  2. If voltage is more than 10 volts, repair open in fused ignition feed circuit (Dark Blue/White wire) between fuse panel and electronic instrument cluster. If voltage is less than 10 volts, gain access to ignition switch connector.
  3. Using DRB-II in voltmeter mode, check voltage of ignition feed circuit at ignition switch connector terminal No. 2 (Dark Blue wire). If voltage is more than 10 volts, repair open in Dark Blue wire between ignition switch and fuse No. 15. If voltage is less than 10 volts, check voltage of battery feed circuit at ignition switch connector terminal No. 7 (Red wire).
  4. If voltage is more than 10 volts, replace ignition switch. If voltage is less than 10 volts, repair open in Red wire between battery and ignition switch.
  5. Turn ignition switch to OFF position. Disconnect body controller connectors. Body controller is located under left side of instrument panel. Using DRB-II in ohmmeter mode, check resistance of fused ignition feed circuit (Dark Blue/White wire) at fuse No. 15. If resistance is less than 5 ohms, repair short to ground in Dark Blue/White wire and replace fuse No. 15.
  6. If resistance is more than 5 ohms, reconnect body controller connectors. Check resistance of fused ignition feed circuit (Dark Blue/White wire) at fuse No. 15. If resistance is less than 5 ohms, replace body controller and fuse No. 15. If resistance is more than 5 ohms, reconnect instrument cluster connector.
  7. Using DRB-II in ohmmeter mode, check resistance of fused ignition feed circuit (Dark Blue wire) at fuse No. 15. If resistance is less than 5 ohms, replace electronic instrument cluster and fuse No. 15. If resistance is more than 5 ohms, replace fuse No. 15.
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