Hey guys. I need a diagram with wire colours so I can work out which bank is which for coil packs and injectors. also I have found that along my loom there are two wires stripped out with no connector on the end so I need to find out where this goes aswell. hoping that with the right diagram I can match it up and replace the right connector. I've spent the last hour hunting through diagrams ugh my eyes.
Are you re-assembling the engine? If so, the wiring loom has a 'memory'. just see how it wants to fit, and it should all go together nicely. The wiring diagram is here: http://www.300zx-twinturbo.com/cgi-bin/manual.cgi The wires and their respective colours are all labelled thus: B black L Blue W white G green R red Most wires in the factory loom have two colours- so BR would be black with red stripe. WL would be white with blue stripe. The coils are wired from ECU>PTU>Coils. Each has 3 wires, one being ground (black) a signal wire and another (cant recall its function). For other problematic wires, snap a CLEAR pic, post it up and we can all play the connector guessing game. We like it a lot.
hahah thanks mate. I've pretty much got it figured out theres only so many places each connector can reach. unfortuantly the connector isnt there ahahh its just two wires off the loom. ill go look at the colours tomorrow and pots them up if I cant figure it out tonight.
Some comments I will make is number 5&6 coilpack connectors are easily swappable with the connectors for the cam solenoids (IIRC) just make sure that these are correct and that your earths are all there, ie the plenum and the bell housing ones especially. also pays to get a diagram for your vacuum lines and to know where they all are and go before you start.
I deleted alot of the vacuum lines and have a simplified diagram for eBC and gauge so I'll be all good there
I think you might mean injector harness connector with the AIV/FICD connections on the plenum? The Coilpack connectors are a 3-wire plug, VTC is a 2-wire plug. Both oval shaped and grey, but will never fit together unless you use a hammer and a vise
cheers mitch I know there is a connector that does this just could not remember the correct one. and was in bed with the lappy so not shooting out to the car to check.
It's cool. Thanks for your input, I like to correct things if I can, because I too fell victim to the injector connector and AAC/FICD plug confusion when I did my first plenum pull and extractor fitment on the NA (it took me a fortnight of evenings after work too )
hey mitch need your help got 5 wires at the very start of the "injector tree" harness by the looks of things. two lots are group together and then a single larger black one is there. I reckon the blue and the white/black one are one injector the white/blue and the white/black are a second injector and im thinking the single black is for the detonation sensor. but then I was look at the wires coming off the det sensor and there are two. But i dont have the harness clip does this run into a single?
So this is the diagram for the EFI harness... basically, the coils and injectors have are split into 2 harnesses cylinder dependent. If I remember right, cyl 5 and 6 have a smaller harness off the main one for coils and injectors, and have other plugs for the FICD and AAC valves on the back passenger side of the plenum. This pic should help. If you can get a pic of the 5 plugs you are talkling about, it would be an easy diagnosis. Is it possible that the plugs you are looking at are plugs F5 thru to F15? These should branch off the main loom which runs along the passenger side of the plenum, as opposed to the main injector tree that rund off the back of the firewall area, and down the guts of the plenum (has most of the injectors and coils on it.
ill put the pic up but the wires are old and faded. the numbers im after are f40 f9 f8 f7 and colours. from what I can guess Orange and black are f7 Blue and White/Black make up injector 5 White/Blue and White/Black make up injector 6 which leaves a black wire alone. which im thinking is for the det sensor. but it is only a single wire? its all im left with
f40 - injector 5. Square plug. Solid Blue wire and White wire with black stripe. f9 - Injector 6 . Square plug. White wire with blue stripe, and a white wire with a black stripe. Refer to the diagram above by brisz to see which way the terminals go. f8 - DET sensor. Oval plug. 2 wires. white and black (on my Zed... a lot of the time these wires are shot and cracked.) f7 -Air regulator on the back of the plenum. Should be a square plug, can't remember if its yellow or grey. 2 wires: Orange and black The single black wire is the det sensor. I think a lot of them have a 'phantom wire' whcih serves no purpose, as the sensor itself uses a signal wire only. This should be connector F8- and as you can see in the big diagram above is that it has only 1 wire in the Det sensor plug (on the sensor). The det sensor has always confused me- as the wiring diagram says it should have 1 wire, but most zeds ive seen run 2 wires. Whether it's a failsafe backup, or what, I don't know. The sensor is a peizoelectric device that makes a current when the sensor is rattled with a knock... so it only needs 1 wire...
Det sensor should have 2 wires mate. NOT 3. One seems to be an earth, the other a signal to the ECU. You shold do a test on your DET sensor to see that it's actually Good before you solder anything permanently. Ideally you'd go to supercheap and buy a small 2 pin narva connector and wire that in, in case you need to disconnect it some time. With your multimeter, test the following: Continuity between DET sensor connector terminal 'A' and an engine ground. Terminal A is the Left hand side terminal on the harness side, when the connector key-way is facing away from you. (use the eyelet connectors in the right hand side of this pic above. these are valiud engine grounds.). Continuity should exist. Check for continuity between the right side terminal on the DET sensor harness and ECU pin 23. See service manual page EF/EC 132 for the location of this one.
No my question is that the single wire from my harness (black) and then the two wires coming from the DET sensor. can all three be put together without a clip? or are you saying i should have a fourth wire?
I would advise NOT to join wires unless you know what they are for, and then only do it if there is a junction between wires shown in the wiring diagram. My response to your question is that there are many 'harnesses' in the engine bay, and many black wires also. It also doesn't help that all the plugs on your harness are missing, broken or not present. If this is the case, then you need to look at the colour pic above, get your multimeter and a length of wire, and probe the shit out of every connection on the ECU connector in the passenger footwell until you find which black wire you have. Or get better pics.
