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Home >> Cadillac >> 1990 >> Allante 440T4/ME9 >> Repair and Diagnosis >> Electrical >> Charging Systems >> Generators & Regulators >> Self-Diagnostic System >> Entering "Service Mode"

Entering "Service Mode"

NOTE: Operating vehicle in "Service Mode" for extended time periods, without engine running, will cause battery to run down and possibly relate false diagnostic information.

To enter diagnostic mode, turn ignition to ON position. Press "OFF" and "WARMER" buttons on ECC control panel simultaneously, and hold until a segment check is displayed on instrument panel and ECC control panel.

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