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Symptom: NO OCM MESSAGE When Monitored and Set Condition: NO OCM MESSAGE When Monitored: At ignition on, the ACM monitors the PCI Bus for a PCI Bus message from the Occupant Classification Module. Set Condition: The DTC will set if the ACM does not receive a valid OCM bus message, if expected by vehicle configuration. POSSIBLE CAUSES ACTIVE LOSS OF IGN RUN-START DTC OCM, COMMUNICATION FAILURE ACM, NO OCCUPANT CLASSIFICATION MODULE MESSAGES STORED CODE OR INTERMITTENT CONDITION ACTIVE CODE PRESENT TEST ACTION APPLICABILITY 1 Turn the ignition on. All ACM - ACTIVE DTC ACM - STORED DTC NOTE: When reconnecting Airbag system components, the ignition must be 2 With the DRBIII t, read the active ACM DTCs.. Is the Run-Start trouble code active? All Yes → Refer to symptom list for problems related to the Airbag Control Module. Then perform the symptom LOSS OF IGNITION RUN- No → Go To 3 157 AIRBAG |