Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1995 Acura Integra (GS-R) L4-1797cc 1.8L DOHC (VTEC)FACTORY OEM SERVICE PROCEDURE
Ignition Control Module: Testing and Inspection
NOTE: If the Malfunction Indicator Lamp (MIL) blinks, see appropriate Diagnostic Trouble Code chart in Computers and Control Systems before testing the coil.
- 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.
- The tachometer should operate normally.
1. Remove the distributor cap, the distributor rotor, and the leak cover.
2. Disconnect the BLK/YEL, WHT/BLU, YEL/GRN, and BLU wires from the ICM.
3. Turn the ignition switch ON. 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. 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. Check the YEL/GRN wire between the ECM and the ICM.
6. Check the BLU wire between the tachometer and the ICM.
7. If all tests are normal, replace the ICM.
- 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.
- The tachometer should operate normally.
Distributor Components:
1. Remove the distributor cap, the distributor rotor, and the leak cover.
Ignition Control Module:
2. Disconnect the BLK/YEL, WHT/BLU, YEL/GRN, and BLU wires from the ICM.
3. Turn the ignition switch ON. 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. 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. Check the YEL/GRN wire between the ECM and the ICM.
6. Check the BLU wire between the tachometer and the ICM.
7. If all tests are normal, replace the ICM.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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