LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 1999 >> SLX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Ignition Checks >> Ignition Control Module >> Ignition Control Module (ICM) Input Test (Accord 3.0L)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Ignition Control Module (ICM) Input Test (Accord 3.0L)

  1. Turn ignition off. Disconnect 3-pin connector from distributor (ICM). See Figure. Turn ignition on. Check for voltage between ground and ICM harness connector terminal No. 2 (Black/Yellow wire). If battery voltage exists, go to next step. If battery voltage does not exist, check ignition coil. See appropriate IGNITION COIL RESISTANCE TEST . Replace coil as necessary. If ignition coil is okay, check for an open in Black/Yellow wire between ICM and ignition coil. See WIRING DIAGRAMS article.
  2. Ensure ignition is on. Check for voltage between ground and ICM harness connector terminal No. 3 (Blue wire). If battery voltage exists, go to next step. If battery voltage does not exist, check ignition coil. See appropriate IGNITION COIL RESISTANCE TEST . Replace coil as necessary. If ignition coil is okay, check for an open in Blue wire between ICM and ignition coil. See WIRING DIAGRAMS article.
  3. Disconnect PCM 25-pin connector "B". Check for continuity in Yellow/Green wire between ICM terminal No. 1 and PCM 25-pin connector "B" terminal No. 13. If continuity exists, go to next step. If continuity does not exist, repair open in Yellow/Green wire.
  4. Check for continuity between ICM harness connector terminal No. 1 and ground. If continuity exists, replace ICM. If continuity does not exist and all other tests are okay, replace ICM.
scientia non olet · About LEMON Manuals