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Home >> Cadillac >> 1992 >> Seville Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Self-Diagnostic System >> Entering Self-Diagnostics
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Entering Self-Diagnostics

  1. Turn ignition on. Simultaneously push OFF and WARMER buttons on ECC panel. Continue pushing OFF and WARMER buttons until segment check appears (approximately 3 seconds).
  2. When segment check appears (all segments glow), system has entered into self-diagnostic mode. Release both buttons. Diagnostic code level displays PCM codes first, followed by IPC, ACP and SIR codes (if so prompted).
    NOTE: Failure of any segment to glow may result in inaccurate test results. Replace any inoperative segment display before proceeding with self-diagnostic process.
  3. To proceed to desired level, press and release ECC panel HI (fan up) button for "yes" or LO (fan down) button for "no". Depress LO button to go to next test level (i.e., IPC?, ACP? or SIR?) or depress OFF button to return to next selection in previous test level, displaying PCM trouble codes.
  4. To exit diagnostics, press AUTO or DEFOG button on ECC panel.
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