The initial programming supplied with this module is an average of the Civic customers I've worked with over a 2-year period so chances are it will work as-is for most Civics. Choose the AP1 version if your S2000 cluster is from a model year 2000 to 2003. Choose AP2 for cluster model years 2004 and 2005. This product will NOT work with clusters from model years 2006 and newer.
Note - This ECT module is designed to work with a temperature sensor that is monitored by the ECM and powered by the ECM 5-volt "sensor power". You cannot use a sensor that controls the radiator fans or a sensor that was designed to operate any other type of temperature gauge, such as an OEM temperature gauge or an after-market temperature gauge. These will not work with the ECT module.
We recommend you measure your ECT sensor voltage as shown in the 2nd product photo. If your voltage is between .5 and .6 volts at normal engine temperatures then the initial programming supplied with this module will work in your car. If your sensor voltage is different then you will need to reprogram the module for correct operation.
In order to keep the cost down we do not include a programming cable with this product but you can make your own following the instructions in the Manuals tab or if you prefer a pre-made cable look in the "Related Products" tab. If you don't have access to a PC with serial port we can usually do re-programming for you if you're willing to ship the module back to us and provide the necessary information.
Installation Instructions (also covers ECT-2 with sensor)
Measuring your ECT Sensor Voltage - (simple test) We recommend you do this before buying to confirm compatibility.
More Complete Tests - Do this if you want us to do custom programming for best operation with your car (no extra charge)
ECT-2 Programming zip file This zip file has instructions for using Hyperterminal and sample programming files