Ignition Control Module: Testing and Inspection

NOTE:
- Perform an input test for the ignition control module (ICM) after finishing the fundamental tests for the ignition system and the fuel and emission system.
- The tachometer should operate normally.

1. Remove the distributor ignition (DI) cap, the rotor, and the inner cover.
2. Disconnect the BLK/YEL, WHT/BLU, YEL/GRN, and BLU wires from the ICM.
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 ignition switch 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:
- Ignition coil.
- WHT/BLU wire between the ignition coil and the ICM.
- If there is battery voltage, go to step 5.

5. Disconnect the ECM 32P connector.
6. Check for continuity on the YEL/GRN wire between the ECM and the ICM. There should be continuity.
7. Check for continuity on the YEL/GRN wire to body ground. There should be no continuity.
8. Check for continuity on the BLU1 wire to body ground. There should be no continuity.
9. If all the tests are normal, reconnect the ECM 32P connector, and replace the ICM.