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.
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HOMESERVICE MANUALSACURA1996INTEGRA L4-1797CC 1.8L DOHC (VTEC)REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - IGNITION SYSTEMIGNITION CONTROL MODULETESTING AND INSPECTION
1996 Acura Integra L4-1797cc 1.8L DOHC (VTEC)
Ignition Control Module: Testing and Inspection
1996 Acura Integra L4-1797cc 1.8L DOHC (VTEC)SECTION Testing and Inspection
IGNITION CONTROL MODULE (ICM) / INPUT TEST
NOTE:
- Refer to How to Display and Read Diagnostic Trouble Codes if the malfunction indicator lamp (MIL) has been reported 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.
- The tachometer should operate normally.
1. Remove the distributor ignition (DI) cap, the 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 ICM.
- If there is battery voltage, go to step 5.
5. Disconnect the 32-P connector from the ECM, and check for continuity on the YEL/GRN wire between the ICM and ECM.
There should be continuity.
6. Check for continuity on the YEL/GRN wire to body ground.
There should be no continuity.
7. Reconnect the ECM 32-P connector.
8. Disconnect the gauge assembly 13-P connector, TCM 26-P connector, and cruise control 14-P connector.
9. Check for continuity on the BLU wire between the ICM and tachometer.
There should be continuity.
10. Check for continuity on the BLU wire to body ground.
There should be no continuity.
11. If all the tests are normal, reconnect the connectors, and replace the ICM.
NOTE:
- Refer to How to Display and Read Diagnostic Trouble Codes if the malfunction indicator lamp (MIL) has been reported 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.
- The tachometer should operate normally.
1. Remove the distributor ignition (DI) cap, the 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 ICM.
- If there is battery voltage, go to step 5.
5. Disconnect the 32-P connector from the ECM, and check for continuity on the YEL/GRN wire between the ICM and ECM.
There should be continuity.
6. Check for continuity on the YEL/GRN wire to body ground.
There should be no continuity.
7. Reconnect the ECM 32-P connector.
8. Disconnect the gauge assembly 13-P connector, TCM 26-P connector, and cruise control 14-P connector.
9. Check for continuity on the BLU wire between the ICM and tachometer.
There should be continuity.
10. Check for continuity on the BLU wire to body ground.
There should be no continuity.
11. If all the tests are normal, reconnect the connectors, and replace the ICM.
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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.