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Originally Posted by mr220v
It sounds like the igniter functions have been integrated into the ecu. I'm glad you said that, because that makes wiring the coils much easier.
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Yep! Wiring the coils should be quite easy.
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I would imagine the cam sensor is similar or the same as the one used on earlier generations.
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The end of the camshaft has two fins on it, that are approx. 120 degrees apart. It uses a hall effect sensor to pick up when the fin passes the sensor.
I cant remember how many wires come from this, but I'll check later.
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Is the crank sensor a simple 1 wire pickup?
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Yes, hall effect sensor, that picks up teeth on the crank pulley.
It's either one or two wires, I'll check later.
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The vvt should be easy to wire.
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Yeah I'm not exactly sure how it works, but I'm fairly sure that it's just a solenoid that opens/closes to let oil pressure in or out of the camshaft. So the wiring side of it should be easy enough.
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Run 3 wires, and theres your map sensor.
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The redtop runs an AFM/temp sensor in one unit, and has 5 wires coming from it.
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One other thing, I noticed that the 4th gen engine plugs are very similar to the 3rd and second gen plugs. How about the ecu? Are any of the the 90's standard 26, 22, 16? Or are the ecu plugs more like the newer toyotas?
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The redtop has four plugs going into the ECU; 2 from the body harness, and two from the engine loom.
I'm not sure what other ECUs are similar, but it's definitely different to the three plug gen 2 ECU.