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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 48A - Electronic Instrument Cluster No Response

Test 48A - 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. Turn ignition switch to OFF position. Disconnect electronic instrument cluster. Check connector, and clean or repair connector as necessary. Turn ignition switch to ON position. Using DRB-II in voltmeter mode, check voltage of CCD bus positive circuit at electronic instrument cluster connector (Violet/Brown wire) terminal No. 10.
  2. If voltage is less than one volt, repair open in Violet/Brown wire between data link connector and instrument cluster. If voltage is more than one volt, check voltage of CCD bus negative circuit at electronic instrument cluster connector terminal No. 9 (White/Black wire).
  3. If voltage is less than one volt, repair open in White/Black wire between data link connector and instrument cluster. If voltage is more than one volt, turn ignition switch to OFF position.
  4. Using DRB-II in ohmmeter mode, check resistance of signal ground circuit at electronic instrument cluster connector terminal No. 7 (Black/Light Green wire). If resistance is more than 100 ohms, repair open in Black/Light Green wire.
  5. If resistance is less than 100 ohms, turn ignition switch to ON position. Using DRB-II in voltmeter mode, check voltage of fused ignition feed circuit at electronic instrument cluster connector terminal No. 11 (Dark Blue/White wire).
  6. If voltage is less than 10 volts, go to TEST 48B. If voltage is more than 10 volts, check voltage of fused battery feed circuit at electronic instrument cluster connector terminal No. 2 (Pink wire).
  7. If voltage is more than 10 volts, replace electronic instrument cluster. If voltage is less than 10 volts, remove and inspect fuse No. 3 in fuse panel. If fuse is open, go to TEST 48C. If fuse is okay, install fuse and go to next step.
  8. Using DRB-II in voltmeter mode, check voltage of battery feed circuit side of fuse No. 3 (Black/Red wire). If voltage is more than 10 volts, repair open in Pink wire between fuse panel and instrument cluster. If voltage is less than 10 volts, repair open in Black/Red wire from back of fuse panel to battery.
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