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Home >> Oldsmobile >> 1991 >> Toronado Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Pcm/BCM >> Manual Operation Of Service Mode >> BCM Snapshot (CRT Equipped Vehicles)

BCM Snapshot (CRT Equipped Vehicles)

NOTE: If directed here from TEST TYPE SELECTION, go to step 2).
  1. SNAPSHOT allows the recall of system operating specifications present at the exact time a BCM malfunction code was set. Up to 3 snapshots may be recalled. In addition, one snapshot may be triggered on demand by touching YES key when TAKE BCM SNAPSHOT is displayed. To enter snapshot complete the following:
    • Enter self-diagnostics. See ENTERING SELF-DIAGNOSTICS.
    • Display trouble codes stored in memory. See DISPLAYING TROUBLE CODES.
    • Select BCM system for testing. See SYSTEM SELECTION under MANUAL OPERATION OF SERVICE MODE.
    • Select SNAPSHOT test type. See TEST TYPE SELECTION under MANUAL OPERATION OF SERVICE MODE.
      NOTE: To cancel snapshot test type selection and activate a repeat of specific test type selection process, touch LEVL key on CRT monitor.
  2. Immediately following selection of SNAPSHOT?, system will display BXXX SNAPSHOT. "B" stands for BCM. XXX is used here to represent 3-digit code stored in BCM snapshot.
  3. With BXXX SNAPSHOT displayed, touching NO key on CRT monitor will permit scrolling through list of BCM diagnostic codes for which BCM has stored a snapshot. See DISPLAYING TROUBLE CODES for list of BCM trouble codes which may be present in snapshot.
    NOTE: A trouble code displayed during trouble code display cycle may not be present as a snapshot trouble code. If this is the case, exit SNAPSHOT by touching LEVL key on CRT monitor. This will return display to the next available system selection.
  4. After display of last BCM trouble code for which a snapshot does exist, touching NO key on CRT monitor will result in TAKE BCM SNAPSHOT? display. Responding to this display by again touching NO key will return display to first BXXX SNAPSHOT? display.
  5. Responding to TAKE BCM SNAPSHOT? display by touching YES key on CRT monitor with SNAP DATA? or SNAP INPUTS? displayed will select that test type.
  6. At this point, display is controlled as it would be for non snapshot data and inputs displays; however all values and status information represent memorized vehicle conditions. See EXPLANATION OF SPECIFIC TEST SELECTION and MAKING SPECIFIC TEST SELECTION under MANUAL OPERATION OF SERVICE MODE. 7)Touching YES key again with TAKE BCM SNAPSHOT? displayed will change DIC to display SNAP DONE message to indicate new information has been stored in memory.