LEMON Manuals: Even more car manuals for everyone
Home >> Oldsmobile >> 1996 >> Achieva SC, 3.1 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Controls - System/Component Tests - 2.4L) >> Ignition System >> Timing Control Systems >> Ignition Control (IC) Timing Advance System

Ignition Control (IC) Timing Advance System

WARNING: This page is about a different variant/trim than selected.
  1. A malfunction in the IC circuit (formerly referred to as the EST circuit) should set a related diagnostic trouble code. Start engine and warm to operating temperature. On vehicles equipped with a manual transmission, increase engine speed to about 2000 RPM. On vehicle equipped with an automatic transmission, slightly increase idle speed.
  2. Ground DLC "test" terminal "B" (not applicable to all models). A noticeable change in engine speed should occur. If no change occurs, see DIAGNOSTIC CIRCUIT CHECK in BASIC TESTING article.
scientia non olet · About LEMON Manuals