Engine Fault light keeps coming on (code 33)

Birdy77
I'm new, be nice!
Posts: 4
Joined: August 27th, 2010, 1:53 pm

Engine Fault light keeps coming on (code 33)

Unread post by Birdy77 » January 15th, 2011, 8:48 pm

I've got a 2002 HDJ100R (4.2TD 1HDFTE) and bloody love it!!.....but, the engine fault light keeps coming on and when the IT has been plugged into it in the past it is always Code 33-(Air Intake Shutter Control open circuit or short for more than 0.5sec). Was just wondering if anyone knew of other cruisers which have had this fault code appear and how to fix it.
I can think of 3 things to start with, replace Shutter control diaphragm or replace diaphragm control solenoid or pay an auto leco a million dollars to rip all the wiring apart and find where some dirty little rat might have had a chew.
Any other help would be very appreciated!!

mickslux
Here and there
Posts: 42
Joined: November 15th, 2009, 4:06 pm
Location: Mt Coolum

Re: Engine Fault light keeps coming on (code 33)

Unread post by mickslux » January 15th, 2011, 11:28 pm

Get it to a toyota workshop. They charge alot, but u end up saving because they can usually fix things 3 times faster than your average auto sparky down the road.

andy086
Been here a while
Posts: 160
Joined: June 29th, 2010, 7:13 pm
Location: Rosewood, QLD

Re: Engine Fault light keeps coming on (code 33)

Unread post by andy086 » January 25th, 2011, 6:14 pm

Keep us up-to-date if you figure this out! My HDJ79r is displaying the engine light intermittently it has got me beat what it is! I'll have to find out the error code.

TroopiePete
Need to get out more
Posts: 2743
Joined: November 5th, 2009, 5:44 pm
Location: Algester, Brisbane , QLD

Re: Engine Fault light keeps coming on (code 33)

Unread post by TroopiePete » January 25th, 2011, 6:31 pm

Hi

I am firstly interested in how you plugged in, I have an analiser but cannot get it to read the ECU - think it's a plug issue but not sure.

the intake shutter control is done by a vacuum actuator - even if this was stuck I doubt it would throw an error as there is no sensor - that I know of, if there is possibly there is a blockage in the air intake but I think you would have noticed a lack of power if that were the case.

The next thing would be the electric valve that controls this - not sure where it is but on mine I know it operates immediately when I turn the motor off, shutting the intake Air off to stall the motor - intended to prevent run away if oil is being sucked into the cylinders.

Also I have a Turbo Boost and Vacuum gauge - as Diesels do not create a vacuum it is normally not the gauge to install but it was free - but it actually would help in this case to see if the shut off valve is working as the gauge immediately goes into a high vacuum the instant I switch the car off, possibly yours dose not do this.
Peter Richens - VK4FSD
HF Radio club - 4115
River City 4WD Club - President 2010 - 2014 http://www.rivercity4wdclub.net

Chard the Chipy
Here and there
Posts: 55
Joined: November 18th, 2007, 2:05 pm

Re: Engine Fault light keeps coming on (code 33)

Unread post by Chard the Chipy » January 26th, 2011, 12:10 am

TroopiePete wrote:Hi

I am firstly interested in how you plugged in, I have an analiser but cannot get it to read the ECU - think it's a plug issue but not sure.

If you mean diagnostic mode you must pull the short staple in the diagnosis connector under the bonnet drivers side and bridge the two connectors together while the ignition is ON but not started. The dash lights will start flashing codes.

Click the link for a diagram.

http://img42.imageshack.us/img42/4624/l ... nostic.jpg

Tritun
Here and there
Posts: 43
Joined: November 6th, 2005, 5:46 pm
Location: Newcastle

Re: Engine Fault light keeps coming on (code 33)

Unread post by Tritun » March 14th, 2011, 8:22 pm

do you have a list of the codes aswell? that would be handy, cheers :)

RussKie
Here and there
Posts: 47
Joined: October 7th, 2009, 9:09 am

Re: Engine Fault light keeps coming on (code 33)

Unread post by RussKie » March 15th, 2011, 10:41 pm

Mate, I'm in exactly same boat. Got a 2002 rig (pre-restyling), and since I got it had exact same issues with intermittent "check engine light", code 33.

After few unsuccessful visits to various "diesel specialists", I took to local toyota and they had instantly found the vacuum sensor failure. It got replaced - 1st time it seemed to have addressed the issue for number of months. Unfortunately recently it came back again, and it was replaced under warranty, but the CEL came literally the next day....
Now I have 2 options - let toyota take it to auto elecs ($88ph x ???hrs) or bluntly ignore it...

What I've noticed - it seems that my CEL comes whenever the aircon settings changed from "to windscreen" to either "to front" or "to front and feet". However to date I don't have a reliable proof of my suspicions
Igor "RussKie" -:- ex 100TD, now 150TD

Birdy77
I'm new, be nice!
Posts: 4
Joined: August 27th, 2010, 1:53 pm

Re: Engine Fault light keeps coming on (code 33)

Unread post by Birdy77 » April 8th, 2011, 7:40 am

Ended up taking it to the local Toyota dealer, they put air onto the diaphragm to free it up (said it was sticking, which is a crock of *****-I still think it's an electrical problem), light came back on 2 days later.
Next time they replaced the Intake shutter c/w diaphragm......2 days later, light back on again.
Returned so they could download the data and send off to Toyota.
Toyota then sent a test procedure.
So it's now been there four times and the latest is, they've cleaned/drilled out the vacuum ports and lines.
If the light comes on again I'm going to ask if they will just bridge something out so that fault 33 won't ever show up at all, I really couldn't give a ***** if it takes longer than 0.5 second to shut off anyway.
Fingers crossed cause soon I'll have to resort to looking for a Nissan..... :-I

Tritun
Here and there
Posts: 43
Joined: November 6th, 2005, 5:46 pm
Location: Newcastle

Re: Engine Fault light keeps coming on (code 33)

Unread post by Tritun » April 8th, 2011, 8:07 am

Nissan :crazy:

Northside4x4Performance
Here and there
Posts: 91
Joined: May 31st, 2010, 12:39 pm

Re: Engine Fault light keeps coming on (code 33)

Unread post by Northside4x4Performance » April 9th, 2011, 9:43 pm

This is caused generally by a faults VSV valve. So toyota call them.

Which ever solenoid the light is bringing up is either being stuck open/closed.
Or has an internal short.

The other option is faulty ecu harness (bad connection at the ecu end)

Seen this problem many times before and is easily fixed.
Toyota just dont know how to interpret the fault codes.

What amazes me is the price toyota charge for these PWM valves. Normally around $300 or so.
You can pick up an identical valve with the wrong plug on it for about $10 at the wreckers.
Just chop the plug off, solder the toyota one on and all good to go. :)

glenndini
I'm new, be nice!
Posts: 1
Joined: September 15th, 2013, 10:22 am

Re: Engine Fault light keeps coming on (code 33)

Unread post by glenndini » September 15th, 2013, 10:30 am

Has anyone actually cured this diagnostic code 33?
I have checked the VSV solenoid as per the FSM. It measures 38 ohms (within specs).
No short to body. The solenoid operates when 12V applied.
Air passes valve when activated.
All plugs and wires test OK.

All tests appear to confirm that the Air Intake Shutter Control is functioning as it should. The fault code and CEL keep returning though.

I am loathed to go to Toyota as the expense of them guessing won't help.

cheers

Andrew123
I'm new, be nice!
Posts: 2
Joined: February 24th, 2018, 12:15 pm

Re: Engine Fault light keeps coming on (code 33)

Unread post by Andrew123 » February 27th, 2018, 9:41 am

Sorry to pick-up an old thread.

Has anyone managed to solve this? Currently having the same issue and Toyota cannot solve it.
ECU, wiring harness, VSV and shutter valve all test OK. Light continues to come on intermittently after being cleared.

Peter Aawen
Admin
Posts: 20778
Joined: June 17th, 2005, 8:01 pm

Re: Engine Fault light keeps coming on (code 33)

Unread post by Peter Aawen » February 27th, 2018, 10:22 am

Much smarter to pick up an existing thread & keep ALL the pertinent discussion & info in one place than it is to start yet another thread that will only ever get part of the discussion, AND it shows that you actually did search first like we ask people to do! So thanks for doing that! :thumb:

As for solutions, Northside4x4Performance had a couple of good ideas & one possible solution just a few posts up?! ;)

Another thing that might help - this code is quite often associated often 'low vacuum', and amongst all the other causes that could make this occur (any of which could be the cause of your specific problem?!) particularly on 4WD's that've done a fair bit of work & on motorcycles where everything is a bit more exposed, I've often seen vacuum hoses to the various sensors that've started to deteriorate.... altho frequently just looking at these hoses won't reveal anything, but try bending a loop of the hose back on itself, making a fairly tight bend - if you do that it often reveals a multitude of minute cracks & tears/breaks in the hose that aren't visible to the naked eye with the hose just hanging there, but that would certainly let air bleed into the hose as it moves & vibrates during running, dropping the vacuum & giving you those intermittent 'low vacuum' type faults!! Solution - replace all the tiny vacuum hoses with new or 'known good' hoses so you don't get intermittent vacuum leaks & faults like those discussed above! Hey, you could even get those sexy blue or red silicone hoses to replace them with, & tart up the engine bay while you fix the intermittent sensor read faults! ;)

Good Luck :thumb:
An Ex-Service person is someone who thought enough about their country & how great it is, how lucky we are to live here, to write a blank cheque made out to 'The People and Commonwealth of Australia' for the value of 'Up to & including my Life!'

Andrew123
I'm new, be nice!
Posts: 2
Joined: February 24th, 2018, 12:15 pm

Re: Engine Fault light keeps coming on (code 33)

Unread post by Andrew123 » March 25th, 2018, 4:14 pm

Thanks Peter, appreciate the advice.

Unfortunately noting seems to work. All the testing and advice leads to a dead end. Short of selling this lemon, I cannot see how to fix this. :mad:

Disowned
I'm new, be nice!
Posts: 3
Joined: August 10th, 2018, 12:12 am

Re: Engine Fault light keeps coming on (code 33)

Unread post by Disowned » August 11th, 2018, 2:42 pm

Hi All

Just joined up on here. Bought 2002 with 1hd fte with auto and 2 weeks later engine light came on. Turns out I have this issue as well, so jumping on to this older thread to hopefully get some assistance. As RussKie has said mine did seem to be associated with the aircon, however I am yet to confirm this 100%. Anyway on the advice of peter I have changed all vacuum lines and reset, now just waiting. Sooo anyhow my question is would this fault cause loss of power to engine on a long hill, driving up a maybe 20 degree or more slope (im no good on angles) we were loaded but nothing major just camping gear 25% fuel and went from 110 to 80kph and that was were we stayed wouldn't change down foot flat but once on top of the hill back up to 110 and all was good. Anyone have any thoughts?

Cheers in Advance

Return to “100 Series”