yamaha fazer fzs 2003 igniter control unit(CDI)

[Neilr]

Hi,


hope some one can help, im looking at replacing my CDI unit info on the unit(J4T095 72 5DM-01 2X08) and was looking at second hand units. All the info is the same on other units except the last four digit(on my unit 2X08). My question is are any of the other units interchangable ie: 2000 model to a 2003 or 1998 to a 2003.
I cant seem to find and info to say they are or are not. :'(


thanks in advance

[Robby]

What makes you think the current unit is faulty? It's rare for a CDI for fail.

[oilrag]

They have a TCI not CDI. The TCI on them don't fail. Have you got no spark? What is the bike doing?

[Neilr]

[oilrag]

Check the grounds at the TCI. There's two black wires at the TCI, one is permanent ground the other one is the switched ground coming from the safety cut outs. Sometimes the switched ground doesn't make it back to the TCI because it has to go through the ignition switch and go through a loop where the alarm is fitted. If an alarm has been fitted and removed in the past the wiring can be bodged in that loop or it can frey where the wire comes out of the loom. It could also be a fault in the safety cut out relay but more likely it's in the wiring. If in doubt you can jump the two black wires to ground at the TCI and try starting it. Make sure it's not in gear.

[jaffa90]

""12v being supplied to the coils when engine is turned over but no spark at the plug?
Are you talking a 12v pulse to the coils and no sparks on all 4 plugs?

[Neilr]

[Neilr]

[Neilr]

[Nobby the Bastard]

Transistor discharge ignition
The black box
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[xX-Alex-Xx]

This sums up the differences pretty well:

https://fzronline.com/forum/viewtopic.php?t=2398
____________________
DILLIGAF

[Robby]

To re-frame the original question:

- There is no spark.

- Everything downwind of the TCI box looks like it should be working.


Places to look:
- Side stand cutout switch. Could be a red herring, I don't know the setup on your bike, but there have been a lot of threads recently where the sidestand cutout switch was faulty. Possibly related to most people not using their bikes much this year, allowing the cutout switches to seize up from lack of use, or get corroded and not make a good contact.

- Any other cutout switch. Clutch is a popular one.

- Wiring to anything in the circuit, but particularly coils - look for corrosion where the wire goes into the coil, and where the loom earths onto the frame. Also corrosion in the multi-plug on the TCI box.

- If these bits check out, it is worth testing the feed/pulse wire to the TCI to make sure the hall-effect sensor is working. Have a google on testing hall effect sensors. Should be doable with a multimeter plugged into the wires and then spinning the engine over.

Black box failure is very rare, but they often get blamed because they are a black box and very difficult to test at home. Most electrical problems come down to something being dirty or corroded.

[jaffa90]

My long gone 2004 fzs1000 had a I.C.U. & T.P.S.
The pick up coil sends a signal to the I.C.U. which supplies the ignition coils with power to produce a spark at the plugs.

[oilrag]

TCI stands for transistor controlled ignition. Yamaha calls it the ignitor.

Check the two black wires at the ignitor. One black wire should always have continuity with ground. The other black wire is ground from the safety cut outs. It should have continuity with ground when the side stand is up and the key is on. If there's no continuity on either of the black wires that is the problem.

You can also check the light green wire at the ignitor for continuity to ground. That's the neutral safety. When the bike is in neutral the light green wire at the igniter should have continuity with ground.

You can check for 12V at the ignitor. With the key on and the kill switch in the run position check for 12V between Red/White wire at the ignitor connector and ground.

With the key off you could check the resistance between the White/Red and Black/Blue. That would check the pick up coil resistance. The resistance spec will be in the manual.

You can ignore the TPS throttle position sensor. That only effects spark advance when the engine is running. It wouldn't cause no spark.

[Neilr]

[Nobby the Bastard]

Have you considered the pickup coil(s)?

(I say coil(s) because later fz and all fzrs had a single coil but I don't know about an fzs.)
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[Neilr]

[Pete.]

Alarm fitted? If so, that's where to look first.
I'd definitely check the pickup. Had to buy a new one for my BMW last week.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Neilr]