I need help identifying a wire on the select monitor connect

[Matt Monson]

Ok,
Here's the deal. I am doing a harness merge for a member, and need to move his Ej22T select monitor/data link connector over to the other harness. There are 7 wires on the connector, and I only find 6 in the FSM. The wire is red w/green stripe and in the #4 position of the yellow connector. Based on the rest of the car, I am guessing this taps into the wiring for the sensor ground? Any advice is appreciated as this is one of the 3 final wires on this merge...

[vrg3]

That wire connects to the cruise control computer; it allows the Select Monitor to do cruise diagnosis.

I don't have the diagrams with me, but I would imagine that there's only one red-with-green-stripe wire at the cruise control computer. That wire should be connected to pin 4 of the Select Monitor connector.

You can verify this for yourself by doing a continuity check on an intact 1st-gen Legacy.

[Matt Monson]

Don't have an intact legacy at my disposal these days. Since the car this is for doesn't have cruise control, I can just cut it off, eh?

[vrg3]

Yups.

[Matt Monson]

excellent... So question #2 that Josh and I have been discussing offline.

I have conflicting information regarding the neutral position switch. The car is a '92 SS auto. According to my FSM, all turbos behave like a manual tranny and have 5-7 volts in neutral and 0 volts in gear. The autos on the other hand are the reverse of that, and have 0 volts in neutral (or park) and 5-7 volts when in gear.

So, the big question is... Does an auto SS behave like an auto or an MT?

[vrg3]

I don't know, but it shouldn't matter. Just hook the right wires to the right pins.

[Matt Monson]

well the problem is the car is currently wired so that when the NPS is on, it's at o volts and when off it's has 10-13.

This is the reverse of what an MT leggy ECU is using. I am thinking that the NPS is going to need to be changed...

[vrg3]

Wait -- tell me what you're doing exactly. You're swapping an ECU from a 92 4EAT turbo into ... an Impreza of some sort, with a manual transmission?

If that's correct, just connect the neutral switch to the ECU's neutral switch wire. And make sure you do not connect the ECU's transmission ID pin to anything. That way the ECU will know it's hooked up to a manual transmission and will therefore know that the neutral switch wire is grounded when the transmission is in gear.

[Matt Monson]

'92 eat turbo into '95 l impreza MT.

Are you sure about that?

[vrg3]

99.93% sure, yes.

[Matt Monson]

Well,
What Josh and I have been discussing is that the early Impreza actually are backwards from the leggies.

the L Imprezas show continuity when in neutral and the Leggies show continuity when in gear. See the dilema? Josh thinks I will need to use the switch from the leggy?

[vrg3]

Have you tested and verified this on an Impreza? Cuz I'm pretty sure all modern 5MT Subarus use the same neutral switch configuration.

[Matt Monson]

That's the thought I am now entertaining... a misprint. I checked a '94 WRX, '98 and 00 RS and 02 WRX, in addition to the leggy turbo, and they are all the same with positive voltage in neutral on an MT. This '95 FSM that I am looking at is the only outlier...

[vrg3]

Yeah... there are some misprints in FSMs.

[Matt Monson]

That's my story and I am sticking to it...