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Test 14A - Not Receiving Bus Messages Correctly

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION. For wiring diagrams, see WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
  1. Using DRB-II, indicate whether vehicle is equipped with specific module. Turn ignition off. Disconnect Transmission Control Module (TCM), if equipped. TCM is located on left side of engine compartment, near cowl. Turn ignition on. If DRB-II does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace TCM. Perform TEST VER-1.
  2. If DRB-II displays NOT RECEIVING BUS MESSAGES CORRECTLY, turn ignition off and disconnect Powertrain Control Module (PCM). PCM is located between data link connector and battery, on fenderwell. Turn ignition on. If DRB-II does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace PCM. Perform TEST VER-1.
  3. If DRB-II displays NOT RECEIVING BUS MESSAGES CORRECTLY, turn ignition off and disconnect Controller Anti-Lock Brake (CAB) module, if equipped. Turn ignition on. If DRB-II does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace CAB module. Perform TEST VER-1.
  4. If DRB-II displays NOT RECEIVING BUS MESSAGES CORRECTLY, turn ignition off and disconnect Mechanical Instrument Cluster (MIC) or Electronic Instrument Cluster (EIC). Turn ignition on. If DRB-II does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace MIC or EIC. Perform TEST VER-1.
  5. If DRB-II displays NOT RECEIVING BUS MESSAGES CORRECTLY, turn ignition off and disconnect Vehicle Theft Alarm (VTA) module, if equipped. Turn ignition on. If DRB-II does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace VTA module. Perform TEST VER-1.
  6. If DRB-II displays NOT RECEIVING BUS MESSAGES CORRECTLY, turn ignition off and disconnect compass/mini-trip module, if equipped. Compass/mini-trip module is located at center of roof, above visors. Turn ignition on. If DRB-II does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace compass/mini-trip module. Perform TEST VER-1.
  7. If DRB-II displays NOT RECEIVING BUS MESSAGES CORRECTLY, turn ignition off. Disconnect auto temperature control head, if equipped. Turn ignition on. If DRB-II does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace auto temperature control head. Perform TEST VER-1.
  8. If DRB-II displays NOT RECEIVING BUS MESSAGES CORRECTLY, turn ignition off and disconnect Body Control Module (BCM), if equipped. BCM is located behind right knee panel below dashboard.
  9. Turn ignition on. If DRB-II does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace BCM. Perform TEST VER-1. If DRB-II displays NOT RECEIVING BUS MESSAGES CORRECTLY, replace DRB-II cable or cartridge as necessary. Perform TEST VER-1.
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