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Home >> Cadillac >> 1990 >> Seville Base, 4T60/ME9 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Manual Operation Of Self-Diagnostics >> Step 3: Specific Test Selection >> Specific Test Selection (Making Selection)
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Specific Test Selection (Making Selection)

  1. To scroll to the specific test number desired for selection, depress the LO button on the ECC panel and system will display the next smaller specific test number. If this button is depressed with the lowest test number displayed, the highest test number then will appear.
  2. Depress the HI button on the ECC to display the next larger test number. If this button is pressed with the highest test number displayed, the lowest test number will then appear.
NOTE: If necessary, depress the OFF button on the ECC panel to cancel a specific test selection and activate a repeat of the specific test selection process.
Fig 1: Outline of 3-Step Specific Test Selection Process
G90D04603Courtesy of GENERAL MOTORS CORP.