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SYSTEM SELECTION Buick Regal III

Diagnosis - A/t ~206 words

SYSTEM SELECTION

  1. After all trouble codes have been displayed, the SERVICE MODE system can be directed to perform specific system diagnostic tests. See «DISPLAYING TROUBLE CODES»(/buick/regal/iii-1988-1997/remont/automatic-trans/#diagnosis-at__displaying-trouble-codes). Following the trouble code display, the first system available for testing will automatically be displayed. For example, ECM? may now be present on the display.
  2. To select the desired system, (ECM or BCM), advance and stop the DIC display as follows: On non-CRT equipped vehicles, depressing the FAN DOWN button on the ECCP will cycle the system selection list. When the desired diagnostic system is displayed, depress FAN UP button on ECCP and the displayed system will be selected for testing.
  3. On CRT equipped vehicles, touching NO key on CRT monitor panel will cycle system selection list. When desired diagnostic system is displayed on DIC display panel, touch YES key on CRT monitor panel and displayed system will be selected for testing. (Scheme 4)
  4. On non-CRT vehicles, depressing BI-LEVEL button on ECCP will exit diagnostics and return to normal IPC and ECCP operation.

Note. To cancel a system selection and repeat the system selection process, depress the OFF button on the ECCP for non-CRT equipped vehicles or touch LEVL key on CRT monitor panel for CRT equipped vehicles.