Quote:
Originally Posted by 97civicdx
The ICU has a few cables attached to it. Can anyone tell me what they do? The one pin is the CPS i know already. There are two 4 pin plugs on it as well. The forward most looks like it goes to the coil and the rear one looks like it goes near the battery.
Why does the 16 valve 190 have two 4 pin connectors and regular 190e 2.3's have only 1 4 pin connector?
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You might want to check out this website.
http://web.archive.org/web/20060602101116/http://mb.braingears.com/201_Chassis.htm
The 190E's with one 4 pin connector use a Transistorized Control Module N1/1. The 190E's with two 4 pin connectors use an Ignition Control Module, N1/2.
My '93 2.3 8v has 2 connectors at the Ignition Control Module, N1/2.
The rear one:
Pin 1, Engine Coolant Temperature Sensor
Pin 2, Wide open throttle/closed throttle position switch
Pin 3, Reference Resistor (on my car it is a cable harness with a resister plugged into it with tape around it, it's located near the ICV under the breather...came from the factory like that)
Pin 4, Vacant (lead ends in wiring harness or intake air temperature sensor)
The front one:
Pin 15, Terminal 15
Pin 16, Ignition coil terminal 1
Pin TD, TD signal
Pin 31, Ground
Note, the pin numbers appear on top of the connectors.