Name that switch & plugs - JDM B16A

[Dutchy1978]

I have a couple of questions for the B16A gurus on here.

93 JDM B16A 5 spd Manual

1. I found this switch was broken on the back of the engine (inlet manifold side). I obviously need a new one but not sure what it is.. It has one Red with blue stripe wire going to the plug

2. The plug that connects to the above switch also has another plug as part of the loom which was not plugged into anything. Does anyone know what it is for? It has a Pink with blue strip wire and black wire.

http://i237.photobucket.com/albums/ff234/dutchy1978/d1d23887583a65081c19a8c31b7e007a_zps1ndyefox.jpg
http://i237.photobucket.com/albums/ff234/dutchy1978/c748cdcefcd36fe9c7299ccb3fc89fc4_zpsrsszvq0y.jpg

3. There are 3 plugs that connect to the cabin harness on the Drivers side shocker tower (RHD) but one plug has a blanking plug for some reason.
Why would this be? All the wires are Yellow with black stripe.

http://i237.photobucket.com/albums/ff234/dutchy1978/d1e187ef161d0336c1b8fb697f3bbfe6_zps75gl2feq.jpg
http://i237.photobucket.com/albums/ff234/dutchy1978/bcbee86bdec36c8404175e6f91d4de46_zpsvqwojevf.jpg

cheers,

[Dutchy1978]

Sorry guys, images didn't work to well when using an iPad.
Fixed.

[ECU-MAN]

1 = Knock Sensor
2 = ?
3 = Injector bridge

[Dutchy1978]

1 = Knock Sensor
2 = ?
3 = Injector bridge

Seeing as I am going to use a P28 with chip an no knock board does that mean I don't need to replace the broken switch # 1?
What is an injector bridge?

[ECU-MAN]

Yes that would be correct


The injector bridge provides +12v to the injectors where otherwise there would be a resistor block.

[Dutchy1978]

Ok so just leave it all as I found it.
The engine was running ok so these are just things I didn't take notice of at the time.

Still don't know what plug #2 is in the first image??

[ECU-MAN]

ignore plug 2, its probably a JDM thing


If you can trace it back to one of the ECU pins I could probably give you more info on it

[Dutchy1978]

unfortunately i don't have the cabin harness yet so not sure what colour the matching wire is that plugs into the Pink/blue wire. I can probably work it out too then using the following link.

http://technet.ff-squad.com/wiring.obd1.htm

Maybe this engine harness is a generic harness for another engine which has an additional sensor. I guess time will tell.

[ECU-MAN]

if your running a P28 you can ignore connector number 2

[Dutchy1978]

Yes running the P28. How did you come to the conclusion to ignore connector number 2?

[ECU-MAN]

by listening to the little voice in my head

[SHOGUNOVDDRK]

by listening to the little voice in my head
ECU-MAN knows.

[Dutchy1978]

Nice one! It's like when you build something from IKEA and you have one screw left. It still works so you say oh well and move on.

Cheers

[dorikin]

No.2 Pink & Blue stripe is IAB - Intake Air bypass

the position of the plug also gives it away

this plug is only used on B18C2 engines (Integra VTI-R) or the JDM SIR Integra

which indicates the Engine Loom you have is from an Integra B18C

if you trace the wire it will lead to RHS shock tower plug

[Dutchy1978]

Thanks Dorikin. Well explained.
I bought the complete engine with harness attached. It also has a P73 Integra Type R inlet manifold and throttle body although there is no IAC plug in the vacinity.

[dorikin]

there wont be because P73 manifold doesn't use IAB

only the P72 manifold does, which looks like this

http://i32.photobucket.com/albums/d36/chaos247/p72_im_1eeee.jpg

[Dutchy1978]

Ah yes. Different integra manifolds.
Makes sense. Thanks for the above info.

The engine was running fine before I bought it so the B18C harness must be universal to the B16A or it is only working because it is running the P73 manifold.
Either way I guess I should stress too much if it ran and drove well.

[ECU-MAN]

The harness is compatible with your engine/ECU

[Dutchy1978]

:thumbsup: