Toyota Denso Piezo Injector wave forms

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mdlamber
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Toyota Denso Piezo Injector wave forms

Post by mdlamber »

Hi Guys
First time on forum. My name is malcolm and i am a Toyota DMT from new zealand.
Does anyone out there have a waveform of a toyota Piezo injector? I have a 2010 Japanese import that has DPF with piezo injectors. Engine is rough idling and datalist shows number one injector out of spec and is running on three cylinders.
Code stored is P0210 injector circuit open number 1. Wiring to and from driver unit and ECM are ok . Suspect injector at this stage , just cautious of driver unit as well.
Supplied is 2 pico files of number 1 injector and number 4 injectors. Current on Channel A is on negative wire of inj 1 and ecm trigger to Driver unit on no 1 as well.
Any help with a reference waveform would be Great :D

Malcolm
Inj 1 Toyota_Hiace_2010_Diesel_20170324-0005.psdata
(3.85 MiB) Downloaded 946 times
Inj 4 Toyota_Hiace_2010_Diesel_20170324-0004.psdata
(4.16 MiB) Downloaded 769 times
Last edited by mdlamber on Mon Mar 27, 2017 10:32 pm, edited 1 time in total.

Dcunning35
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Re: Toyota Denso Piezo Injector wave forms

Post by Dcunning35 »

If you have load tested the wiring and its fine , you could check accross each cylinders piezo stack after all you have 3 good cylinders.
Also check for a short to case ground .
Are these injectors not paired ?'
Ensure pin grips are good too

victor2k
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Re: Toyota Denso Piezo Injector wave forms

Post by victor2k »

Hello,
Why you don't use as reference a signal recorded from inj 2 or 3?
Also EG-0130T-1215 give us as a repair procedure the replacement of injectors .The production process of the piezo fuel injectors has been changed.
Regards

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mdlamber
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Joined: Sun Mar 26, 2017 10:36 pm

Re: Toyota Denso Piezo Injector wave forms

Post by mdlamber »

Hi Guys
All injectors measure 1 mega ohmn each and stable. There is no short to ground using standard multimeter.
The injectors are not paired and terminal pin tension is also good.
I have done another scope of the vehicle while its idling on 3 cylinders tracing No 1 with 3 as reference.
Victor2k is that a toyota service bulletin you are referring too? We do not have such bulletin for that here in NZ.Does it have a part number supersession?

Regards

Malcolm
Injector 1 Suspect Toyota_Hiace_2010_Diesel_20170327-0001.psdata
Inj 1 sample with Inj 3 as ref
(6.29 MiB) Downloaded 743 times
ECM wiring to Driver unit
ECM wiring to Driver unit
Driver unit to injector  wiring
Driver unit to injector wiring

victor2k
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Re: Toyota Denso Piezo Injector wave forms

Post by victor2k »

Injector 1 Suspect Toyota_Hiace_2010_Diesel_20170327-0001.psdata
EWD2.JPG
EWD.JPG
Hello,
It's a toyota's TSB for european market.
PN is the same only must be produced after april/may 2015(the serial number will tell you the date of production).
Try to swap inj 1 and 3 supply and make a new capture(in your capture inj1 have only 83v ,inj 3 107v at opening!).Something in inj 1 keep the supply lower than in inj 3...
Regards
-->
mdlamber wrote:Hi Guys
All injectors measure 1 mega ohmn each and stable. There is no short to ground using standard multimeter.
The injectors are not paired and terminal pin tension is also good.
I have done another scope of the vehicle while its idling on 3 cylinders tracing No 1 with 3 as reference.
Victor2k is that a toyota service bulletin you are referring too? We do not have such bulletin for that here in NZ.Does it have a part number supersession?

Regards

Malcolm
Injector 1 Suspect Toyota_Hiace_2010_Diesel_20170327-0001.psdata
EWD2.JPG
EWD.JPG
Hello,
It's a toyota's TSB for european market.
PN is the same only must be produced after april/may 2015(the serial number will tell you the date of production).
Try to swap inj 1 and 3 supply and make a new capture(in your capture inj1 have only 83v ,inj 3 107v at opening!).Something in inj 1 keep the supply lower than in inj 3...
Regards
Last edited by victor2k on Thu Mar 30, 2017 3:09 am, edited 2 times in total.