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 MANUALSHONDA2004S2000 L4-2.2LREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - BODY AND FRAMECONVERTIBLE TOP CONTROL MODULETESTING AND INSPECTION
2004 Honda S2000 L4-2.2L
Convertible Top Control Module: Testing and Inspection
2004 Honda S2000 L4-2.2LSECTION Testing and Inspection
Convertible Top Control Unit Input Test
1. Remove the passenger's dashboard lower cover.

2. Disconnect the 14P connector (A) and 10P connector (B) from the convertible top control unit (C).
3. Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 4.


4. With the connectors still disconnected, make these input tests at the connectors.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 5.

5. Reconnect the connectors to the control unit, and make the input tests at the connectors.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the control unit must be faulty; replace it.
1. Remove the passenger's dashboard lower cover.
2. Disconnect the 14P connector (A) and 10P connector (B) from the convertible top control unit (C).
3. Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 4.
4. With the connectors still disconnected, make these input tests at the connectors.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 5.
5. Reconnect the connectors to the control unit, and make the input tests at the connectors.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the control unit must be faulty; replace it.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.