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Home >> Acura >> 2000 >> 1.6EL XS, Automatic >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Ignition System >> Ignition Control Module (ICM) Input Test

Ignition Control Module (ICM) Input Test

NOTE:
  • See TROUBLESHOOTING PROCEDURES if the malfunction indicator lamp (MIL) came on.
  • Perform an input test for the ignition control module (ICM) after finishing the fundamental tests for the ignition system and the fuel and emissions systems.
  1. Remove the distributor ignition (DI) cap, the distributor ignition (DI) rotor and the leak cover.
  2. Disconnect the wires from the ICM.
    Fig 1: Identifying Ignition Control Module Wire Coler Location
    G06289321
  3. Turn the ignition switch ON (II). Check for voltage between the BLK/YEL wire and body ground. There should be battery voltage.
    • If there is no battery voltage, check the BLK/YEL wire between the under-dash fuse/relay box and the ICM.
    • If there is battery voltage, go to step 4.
  4. Turn the ignition switch ON (II). Check for voltage between the WHT/BLU wire and body ground. There should be battery voltage.
    • If there is no battery voltage, check:
      • the ignition coil.
      • the WHT/BLU wire between the ignition coil and the ICM.
    • If there is battery voltage, go to step 5.
  5. Disconnect the ECM/PCM connector A (32P). Check for continuity on the YEL/GRN wire between the ECM/PCM and the ICM.

    There should be continuity.

  6. Check for continuity on the YEL/GRN wire to body ground.

    There should be no continuity. If there is continuity (short to ground), the ICM is probably damaged.

  7. Check for continuity on the BLU wire between the test tachometer connector and the ICM. There should be continuity.
  8. Check for continuity on the BLU wire to body ground. There should be no continuity.
  9. If all the tests are normal, replace the ICM.
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