toyota P0352 trouble code

Ask for and share advice on using the PicoScope kit to fix vehicles here.

toyota P0352 trouble code

Postby evanlip » Thu Dec 25, 2014 9:53 am

i am dealing with a ignition coil of toyota previa 2.4L engine,
the owner complaint about the sudden misfire when the MIL light on,but after a while he drove,the MIL light goes off and the car runs like normal.
i plugged in my scan tool and the history code shows P0352 ignition coil "b" primary/secondary circuit.
so i checked them with the picoscope,channel one = control circuit,channel 2 = amp probe on ground,
the result that it shows just nice,a slight oscilation at the beginning than a nice ramp.
is this amperage graph enough to tell me that this coil is good?
or do i need to look at the IGF feedback signal as well?
coz i went out for a few rounds of test drive,and the car just nice.
evanlip
User
User
 
Posts: 12
Joined: Sat Jan 04, 2014 1:11 pm

Re: toyota P0352 trouble code

Postby LucaB » Fri Dec 26, 2014 10:57 pm

Hi.

Charge psdata file.
Then we look together

Best regards
LucaB
User
User
 
Posts: 38
Joined: Tue Nov 24, 2009 5:53 pm
Location: Italia

Re: toyota P0352 trouble code

Postby evanlip » Mon Dec 29, 2014 10:11 am

HERE IS THE CAPTURE,SORRY JUST A VIEW.
PLEASE CORRECT ME IF I NEED A BETTER SETTINGS.
Attachments
acr50 coil 2.psdata
IGNITION COIL CURRENT AND TRIGGER SIGNAL
(408.37 KiB) Downloaded 132 times
evanlip
User
User
 
Posts: 12
Joined: Sat Jan 04, 2014 1:11 pm

Re: toyota P0352 trouble code

Postby tode » Sun Jan 04, 2015 11:06 am

You have rightly entered, the command by the engine control unit, the current consumption, but lacks the voltage signal of the primary, to better understand acquisizione with would need a longer time and at least one strong Expedited, then zoom in on the signal are controlled by signals .
Greetings
Last edited by tode on Wed Jan 07, 2015 8:37 pm, edited 1 time in total.
tode
User
User
 
Posts: 42
Joined: Fri Jun 20, 2014 6:59 pm

Re: toyota P0352 trouble code

Postby LucaB » Tue Jan 06, 2015 8:47 am

Hi Evanlip
Excuse my late reply.
I'd capture of the secondary circuit, if this is not available, remove ignition coil and add a cable candles maybe not resistive.
If ignition coil fitted with a response signal to ECM, you also capture him, this should be the signal that ECM determines the P0352.
As the saying tode, I would catch with longer times maybe 20ms / div but you have to increase the number of samples to screen (1MS) otherwise not see good peak power

tode wrote:You have rightly entered, the command by the engine control unit, the current consumption, but lacks the voltage signal of the primary, to better understand acquisizionecon would need a longer time and at least one strong Expedited, then zoom in on the signal are controlled by signals .
Greetings


Hi Tode
I think if ECM controls charging coil signal of about 4V, you can not take the primary signal.

Best regards Luca
LucaB
User
User
 
Posts: 38
Joined: Tue Nov 24, 2009 5:53 pm
Location: Italia

Re: toyota P0352 trouble code

Postby evanlip » Tue Jan 06, 2015 5:11 pm

noted.lucaB and tode...thanks for the valuable sharing...will try again then.
evanlip
User
User
 
Posts: 12
Joined: Sat Jan 04, 2014 1:11 pm


Return to Diagnostic discussion

Who is online

Users browsing this forum: No registered users and 0 guests