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Home >> Honda >> 2000 >> Prelude Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Ignition Checks >> Ignition Control Module >> Ignition Control Module (ICM) Input Test (CR-V)
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Ignition Control Module (ICM) Input Test (CR-V)

  1. Turn ignition off. Remove distributor cap, rotor and leak cover. Disconnect wires from ICM. See Figure. Turn ignition on. Check for voltage between ground and Black/Yellow wire. If battery voltage exists, go to next step. If battery voltage does not exist, check for open in Black/Yellow wire between ignition switch and ICM. See WIRING DIAGRAMS article.
  2. Ensure ignition is on. Check for voltage between ground and White/Blue wire. If battery voltage exists, go to next step. If battery voltage does not exist, check ignition coil operation. See INTERNAL IGNITION COIL RESISTANCE TEST (ACCORD 2.3L, CIVIC & CR-V) . Replace ignition coil as necessary. If ignition coil is okay, check for open in White/Blue wire between ICM and ignition coil.
  3. Disconnect PCM 25-pin connector "B". Check for continuity in Yellow/Green wire between ICM and PCM 25-pin harness 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 ground and PCM 25-pin harness connector "B" terminal No. 13 (Yellow/Green wire). If continuity exists, check for short to ground in Yellow/Green wire. If continuity does not exist and wiring is okay at this time, replace ICM.
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