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Not Receiving Bus Messages Correctly

NOTE: For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST VER-1  after each repair.
CAUTION: Always turn ignition off prior to disconnecting any module connector.
  1. Turn ignition off. Disconnect Transmission Control Module (TCM), if equipped. TCM is located in left front corner of engine compartment, next to power distribution center. Turn ignition on. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace TCM. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, go to next step.
  2. Turn ignition off and reconnect TCM. Disconnect Powertrain Control Module (PCM). PCM is located next to air cleaner. Turn ignition on. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace PCM. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, go to next step.
  3. Turn ignition off and reconnect PCM. Disconnect instrument cluster. Turn ignition on. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace instrument cluster. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, go to next step.
  4. Turn ignition off and wait 5 minutes. Reconnect instrument cluster. Disconnect Air Bag Control Module (ACM) 13-pin connector. ACM is located under center console. Turn ignition on. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace ACM. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, go to next step.
  5. Turn ignition off and reconnect ACM. Disconnect Smart Key Immobilizer Module (SKIM), if equipped. SKIM is located at ignition lock cylinder. Turn ignition on. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace SKIM. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, go to next step.
  6. Turn ignition off and reconnect SKIM. Disconnect anti-lock brake controller module. Anti-lock brake controller module is mounted on right inner fender panel of engine compartment. Turn ignition on. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace anti-lock brake controller module. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, go to next step.
  7. Disconnect Body Control Module (BCM) 14-pin and 22-pin connectors. BCM is connected to junction block. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace BCM. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, replace scan tool cable or scan tool.
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