Pls help! Can’t find what this connects to!!! (1 Viewer)

[landcruiser808]

Hey everybody,

I got a 1993 Land Cruiser and I did an engine swap and forgot what this connects to.

To give you an idea, there are 6 connectors on the wire harness that connect to 6 injectors. Each connector is color coded grey and orange.

1st injector closest to the radiator and the 6th closest to the firewall.

*So right after the 6th injector connector is a grey connector. I want to know what that 7th grey connector goes into!!!!! Pls help!!! It’s been months and I can’t find it. I called Toyota and they can’t help.

 

[LandLocked93]

That plug connects to nothing on my '93 and is wrapped heavily in a rubber tape-like stuff.
It could go to a piece that is not included in early '93 models. Forget what it is...egr temp sensor or some such.
OBDII nonsense. lol

 

[Rifleman]

That plug connects to nothing on my '93 and is wrapped heavily in a rubber tape-like stuff.
It could go to a piece that is not included in early '93 models. Forget what it is...egr temp sensor or some such.
OBDII nonsense. lol

Just as an FYI a 1993 Land Cruiser is OBD1, OBD2 didn't come into being until 1995 in Land Cruisers, and became Federally mandated in all cars and trucks starting with the 1996 model year

 

[Gerry McGerry]

Check the wire colours if you can. Looks like it's an EGR Temp Sensor plug, brown/black & green/yellow wires.

 

[Kernal]

From an old discussion (see link below) the EGR temp sensor may have been required on the California spec 1993 FZJ80's and US spec 94 models and it was located on the EGR valve itself (instead of the upper intake plenum in the 95+ models). So that harness plug location would be about right for an EGR temp sensor if required.

An old discussion on the topic:

EGR code 71 1994 fzj80 - cleaning temp sensor

Taking tarbe's advice from the outing at Flat Nasty a few weeks ago I decided to clean the EGR temp sensor in hopes of resolving my CEL code 71. The temp sensor isn't as accessible on a 1994 as it is on 1995+. It's tucked under the EGR valve and is held by a 14mm nut. IIRC this is only...

forum.ih8mud.com

Does your pre-95 EGR valve look like this (25620-66010) (it may have a threaded plug in it if no temp sensor was required):

AFAIK for US spec 1995+ FZJ80's the EGR valve (25620-66011) did not have that 14mm port after the EGR temp sensor position was moved to the intake plenum. IME either EGR valve will work just that you'd need the plug (90341-10009) if you weren't using the temp sensor at that location.

Note the 95+ EGR valve (25620-66011) shown below was not tapped for the EGR temp sensor:

And here's an EGR valve with the plug in place of the temp sensor:

 

[LandLocked93]

Just a FYI a 1993 Land Cruiser is OBD1, OBD2 didn't come into being until 1995 in Land Cruisers, and became Federally mandated in all cars and trucks starting with the 1996 model year

Yeah

 

[Kernal]

It would be interesting to know if @landcruiser808 1993 FZJ80 was a California spec model.

 

[fjbj40]

My 93 came out of Cali and that plug was connected to nothing

 

[LandLocked93]

It would be interesting to know if @landcruiser808 1993 FZJ80 was a California spec model.

Picked up my truck in Kansas, but don't know its itinerary over the years. Any way to find out w/o popping for a carfax or something?

Also, kinda curious if EGR-T was ever a parameter on OBDI.
If so...and by now, given the age and cannibalization of trucks parts across the nation...how would one know if their ECU required that parameter while still being OBDI?

 

[bski90]

I have a 1993 in California, it has an EGR temp sensor, I can take a look at it later today to see the plug type and wire colors.

 

[ZackR]

EGR temp sensor. Photo is my old wiring harness (1994) before I replaced it.

 

[Kernal]

So it appears that connector was included in the harness in anticipation of having an EGR temp sensor at some point in all US models. Seems like the EGR temp sensor by itself is not related directly to the vehicle being OBD 1 or 2 (there is a code 71 in the OBD 1 systems for EGR faults, just not very specific).

Land Cruiser 4.5L (1993 – 1994) – TroubleCodes.net

www.troublecodes.net

 

[ZackR]

My new harness (new old stock) came with a plug for the EGR temp sensor (my EGR is disabled but no CEL).

 

[landcruiser808]

Wow! Thanks everybody who replied, that was much quicker than I thought.

So I’m not sure exactly about the origins, I just know it’s made in Japan. Here’s my sticker info if someone would know the origins. Also I will look in the the color of wires and snap a clear photo of my egr. Mahalo everybody

 

[Kernal]

Can you take a photo of your EGR valve (check out all the photos above) and post it up?

 

[landcruiser808]

Can you take a photo of your EGR valve (check out all the photos above) and post it up?

Alrighty will do

 

[landcruiser808]

Also the color of the wires on the 7th connector is a 2 prong. Orange/black Green/Yellow.

 

[Kernal]

@landcruiser808 : Are those photos of the original engine (and EGR valve) or the replacement engine??

 

[landcruiser808]

@landcruiser808 : Are those photos of the original engine (and EGR valve) or the replacement engine??

This is the new replacement engine, but original egr valve.

 

[Kernal]

OK, so your 93 model came with the harness ready for an EGR temp sensor but your FZJ80 wasn't built with that function.