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Not Receiving BUS Messages Properly

NOTE: Perform body verification test after each repair. See BODY VERIFICATION TEST  under VERIFICATION TESTS.
  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. See COMPONENT LOCATIONS . Turn ignition on. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, go to next step. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace TCM. See TRANSMISSION CONTROL MODULE (TCM)  under REMOVAL & INSTALLATION.
  2. Turn ignition off and reconnect TCM. Disconnect Powertrain Control Module (PCM). PCM is located next to air filter housing. See COMPONENT LOCATIONS . Turn ignition on. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, go to next step. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace PCM. See POWERTRAIN CONTROL MODULE (PCM)  under REMOVAL & INSTALLATION.
  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. See appropriate ANALOG INSTRUMENT PANELS article. 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. See COMPONENT LOCATIONS . Turn ignition on. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, go to next step. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace ACM. See AIR BAG CONTROL MODULE (ACM)  under REMOVAL & INSTALLATION.
  5. Turn ignition off and reconnect ACM. Disconnect Sentry Key Immobilizer Module (SKIM), if equipped. SKIM is located at ignition lock cylinder. See COMPONENT LOCATIONS . Turn ignition on. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, go to next step. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace SKIM. See SENTRY KEY IMMOBILIZER MODULE (SKIM)  under REMOVAL & INSTALLATION.
  6. Turn ignition off and reconnect SKIM. Disconnect CAB. Anti-lock brake controller module is mounted on right inner fender panel of engine compartment. Turn ignition on. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, go to next step. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace CAB. See CONTROLLER ANTI-LOCK BRAKE (CAB)  under REMOVAL & INSTALLATION.
  7. Disconnect Body Control Module (BCM) connectors C1 and C3. BCM is connected to junction block. If scan tool does not display NOT RECEIVING BUS MESSAGES CORRECTLY, replace BCM. See BODY CONTROL MODULE (BCM)  under REMOVAL & INSTALLATION. If scan tool displays NOT RECEIVING BUS MESSAGES CORRECTLY, replace scan tool communication cable or scan tool.
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