Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Buick >> 1990 >> Reatta 2D Convertible, 4T60/ME9 >> Repair and Diagnosis >> Electrical >> Charging Systems >> Alternator & Regulator >> Self-Diagnostic System >> Specific Test Selection (Explanation) >> Notes

Specific Test Selection (Explanation): Notes

  1. Following test type selection, the first of many specific tests will be made available for selection. The 4 characters of this display represent a test code. The first 2 characters of the test code are letters identifying the system and test type selected.
  2. If the BCM system and DATA test type were selected, BD will be the first 2 characters of the display. BD stands for BCM DATA. The last 2 characters numerically identify the specific test selection. For example: BD51 designates BCM DATA, test 51.
  3. If the ECM system and DATA test type were selected, ED will be the first 2 characters of the display. ED stands for ECM DATA. The numerals following this designation will represent the particular specific test selection option.
  4. When BI appears as the first 2 characters of the test code, this signifies the BCM system and INPUT test type were selected. The last 2 characters numerically identify the specific test selection. For example: BI51 designates BCM INPUT, test 51.
NOTE: ECM INPUT (EI) tests are NOT charging system related. DO NOT  select INPUTS when in the ECM system.
scientia non olet · About Mike's Workshop Manuals