The 7M Stinger Thread
- Thread starter hottscennessey
- Start date
All in a days work... :icon_bigg
JK, thanks for the good feedback, I'm happy my ramblings helped at least one person. :biglaugh:
JK, thanks for the good feedback, I'm happy my ramblings helped at least one person. :biglaugh:
bigaaron said:
Aaron, I have a question about wiring in the igniter. On the below page, it shows the wires all round the wrong way, it's saying that the plug from the igniter to the ecu is a 4 pin one, and the one to the coils is a 6 pin. thats round the wrong way isnt it??
I'm very baffled....
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=D&P=34
Much like this page:
http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?Section=Main&Page=040
Why does IGDB on the ECU go to IGT on the igniter, and IGDB on the ECU go to IGF on the igniter etc??
Whats going on?
The plug I have from the ECU to the igniter is a 6 pin plug, yet the wiring diagrams show that it should be a 4 pin plug.
Also looking inside the igniter, it shows the 6 pin plug has C1, C2, C3, B+ and TAC.
C1, C2 and C3, is that the ones I should be using for IG1, IG2 and IG3 on the stinger??
OMG I'm so confused haha
http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?Section=Main&Page=040
Why does IGDB on the ECU go to IGT on the igniter, and IGDB on the ECU go to IGF on the igniter etc??
Whats going on?
The plug I have from the ECU to the igniter is a 6 pin plug, yet the wiring diagrams show that it should be a 4 pin plug.
Also looking inside the igniter, it shows the 6 pin plug has C1, C2, C3, B+ and TAC.
C1, C2 and C3, is that the ones I should be using for IG1, IG2 and IG3 on the stinger??
OMG I'm so confused haha
And on a second/third note.
Here's a picture of the igniter.
I have drawn on the pic what the wires are labeled by Toyota inside the igniter. I dont understand, the plugs seem like they are swapped in regards to the wire colors/labels.
The lower plug is the 6 pin that runs to the ECU and the top plug is the 4 pin that runs to the coils.
C1, C2 and C3 I "would have" thought were the 3 signal wires running to the 3 coils?
And IGDa/IGDb I thought ran from the ECU to the igniter to tell which coil to ignite? Yet according to the inside of the igniter they go to the coils? :icon_conf
I'm getting a bit frustrated with this lol
Here's a picture of the igniter.
I have drawn on the pic what the wires are labeled by Toyota inside the igniter. I dont understand, the plugs seem like they are swapped in regards to the wire colors/labels.
The lower plug is the 6 pin that runs to the ECU and the top plug is the 4 pin that runs to the coils.
C1, C2 and C3 I "would have" thought were the 3 signal wires running to the 3 coils?
And IGDa/IGDb I thought ran from the ECU to the igniter to tell which coil to ignite? Yet according to the inside of the igniter they go to the coils? :icon_conf
I'm getting a bit frustrated with this lol
5uprahboy said:No-one?
I saw your post, and it does look completey wacked out. I just haven't had time to look into it. The piston GB is killing most of my free time.
This is a good question for Jetjock, I know he could explain it in 10 seconds flat.
Well, I'm gonna need more than 10 seconds
Yeah, it's screwed up as far as labeling but the pin numbers and colors are correct. The photo is also correct. The four pin goes to the TCCS, the six (5 wires) to the coil packs and tach. What makes you think the six pin runs to the ecu? Keep in mind the colors in the book don't refer to the device side of a connector because they can vary.
Yeah, it's screwed up as far as labeling but the pin numbers and colors are correct. The photo is also correct. The four pin goes to the TCCS, the six (5 wires) to the coil packs and tach. What makes you think the six pin runs to the ecu? Keep in mind the colors in the book don't refer to the device side of a connector because they can vary.
jetjock said:Well, I'm gonna need more than 10 seconds
Yeah, it's screwed up as far as labeling but the pin numbers and colors are correct. The photo is also correct. The four pin goes to the TCCS, the six (5 wires) to the coil packs and tach. What makes you think the six pin runs to the ecu? Keep in mind the colors in the book don't refer to the device side of a connector because they can vary.
The coils themselves only have a 4 pin plug on them, so how can the 6 pin (5 wire) plug go to them?
I reckon the 6 pin "should" go to the ECU with IGDa, IGDb, IGT, TAC, and B+ and the 4 pin with C1, C2, C3 and IGF to the coils. THAT would make sense to me :icon_conf
Huh? Iirc the coils should have two pin connectors. Edit: Ok, I see what you mean. You're talking about the sub harness connector that's in between the igniter and coil pack harness. It has 4 pins but further divides down to two pin connectors for each coil.
One of the wires from the igniter doesn't go to the coil pack area. It branches off to feed the the tach and diag block. The coils only require 4 wires, a common +12 and 3 ground triggers. Hence you have 5 wires total with one blank in the 6 pin connector.
Bottom line is there are 4 signals from the ecu to the igniter using a 4 pin connector and 5 signals leaving the igniter to the coil packs and tach using a 6 pin connector. The labeling on the online schematic is wrong on the igniter side but the pins numbers are correct. Make sense?
One of the wires from the igniter doesn't go to the coil pack area. It branches off to feed the the tach and diag block. The coils only require 4 wires, a common +12 and 3 ground triggers. Hence you have 5 wires total with one blank in the 6 pin connector.
Bottom line is there are 4 signals from the ecu to the igniter using a 4 pin connector and 5 signals leaving the igniter to the coil packs and tach using a 6 pin connector. The labeling on the online schematic is wrong on the igniter side but the pins numbers are correct. Make sense?
jetjock said:
OK, so maybe I'm getting ahead of myself.
I am certain tho, that at the coil end, they only have a 4 pin plug. 3 for each igniter and 1 common. Then there is also an earth wire/ground off the coil bracket. See I'm using the 7M-GTE igniter and coils for my 1G-GTE with a Stinger ECU, and I assumed that there is a seperate harness to run from the igniter to the coils, but perhaps the coils plug into the main engine loom, as does both of the igniter plugs?
This is how I THOUGHT it was setup:
and this is how it IS set up??:
Both of your drawings seem to be the same and both are wrong. I can only tell you how the stock 7MGTE setup works. ECU to igniter is 4 pins and igniter to coil packs is 6 pins with one missing and one going to the tach. Except for the mislabeled igniter signals it's wired just as the book shows it. I dunno how much clearer I can make it.
Edit: Just so you know the ground wire on the coil pack mounting plate is a drain and has no bearing on the ignition system working but it should be connected for other reasons.
Edit: Just so you know the ground wire on the coil pack mounting plate is a drain and has no bearing on the ignition system working but it should be connected for other reasons.
jetjock said:
Sorry jetjock.
I know now the drawings are wrong
What I meant by my drawings was, exactly what you said. Thank you so much for the clarification. I will have a sit down and a think about it again tonight when I get home after having a look at a 7M's loom etc
Again, thank you for your help!
Sorry for hi-jacking this thread :icon_razz
Hey, no problem. Aaron asked me to chime in and since I owe him I was glad to help. Ask if you have more questions.
The missing 6th wire is the ground Toyota should have put in for the igniter instead of depending on the case being bolted to the chassis. They should've run a wire from the ground strap in the igniter (there under the cable clamp) out through that sixth pin and on to the ground wire on the coil pack mounting plate or to some other ground point.
Myself, I run it out through one of the case holes to the nearby chassis ground that goes to battery negative. I did it that way because at the time I didn't have pins and receptacles for the connector. Since you have it apart you may want to do something similar. See my post in the SME electrical section for details.
The missing 6th wire is the ground Toyota should have put in for the igniter instead of depending on the case being bolted to the chassis. They should've run a wire from the ground strap in the igniter (there under the cable clamp) out through that sixth pin and on to the ground wire on the coil pack mounting plate or to some other ground point.
Myself, I run it out through one of the case holes to the nearby chassis ground that goes to battery negative. I did it that way because at the time I didn't have pins and receptacles for the connector. Since you have it apart you may want to do something similar. See my post in the SME electrical section for details.