Intermittent engine warning light

[peter b Lurker Find all posts View Profile Close peter b]

Hi everyone, For the last couple of weeks I have had an intermittant engine warning light come up, when it does the engine idles noisely but seems to run ok and throttle response seems ok also. I have run a DP chip for a couple of years ,which has been fantastic so far and no problems. I managed to pull an error code off the prado 14 = Timing control signal (crankshaft angle 7 deg or more out from target). Has anyone seen this before? Faulty sensor? and where can the crank angle sensor be found?

Cheers

Peter

[peter b Lurker Find all posts View Profile Close peter b]

Thanks John will check this out

Peter

[khorrassany Junior Member Find all posts View Profile Close khorrassany]

Hi Peter,

Can you please update if you figured out the solution for the CODE 14 ? Did you change the TCV?

[t303 Senior Member Find all posts View Profile Close t303]

Sorry I must have missed this post earlier. I have had the ECD throw this code a couple of times over the years when I have been a bit slow changing over from the sub tank, so fuel starvation can cause it. Sometimes the engine light will go out straight away and all's good, but once it went into limp mode and I had to pull the ECD fuse for a couple of minutes to reset it to normal ops. Might be worth checking filters and possibly obstructions or air leaks.
cheers
Steve

[t303 Senior Member Find all posts View Profile Close t303]

Yeah John, I can only theorize that the stumbling motor has sent the timing out for long enough to throw the code. It has never thrown any code that I didn't cause myself.

[khorrassany Junior Member Find all posts View Profile Close khorrassany]

Code 14 issue!
I changed my battery a couple of weeks ago and when I drove off the check engine light didn't come on as it has been for ages! The car was driving superbly great with nice acceleration. I stopped the car and here it come on again!! I disconnected the battery negative terminal and bought a new ECU 800 USD, changed the TCV, checked all the wiring, fuel tank cleaned and replaced fuel filter! And still this damn light doesn't wanna go off can't configure why! The car has very poor acceleration doesn't want to exceed 100 KM/H on highway. It happened a couple of times the light goes off and the car drives great!!
Anyone with same symptoms?

[khorrassany Junior Member Find all posts View Profile Close khorrassany]

Code 14 issue!
I changed my battery a couple of weeks ago and when I drove off the check engine light didn't come on as it has been for ages! The car was driving superbly great with nice acceleration. I stopped the car and here it come on again!! I disconnected the battery negative terminal and bought a new ECU 800 USD, changed the TCV, checked all the wiring, fuel tank cleaned and replaced fuel filter! And still this damn light doesn't wanna go off can't configure why! The car has very poor acceleration doesn't want to exceed 100 KM/H on highway. It happened a couple of times the light goes off and the car drives great!!
Anyone with same symptoms?

[khorrassany Junior Member Find all posts View Profile Close khorrassany]

[QUOTE=##########;408477]You probably need to plug into a diagnostic tool and analyze the situation in graph form (freeze frame). Could be a number of factors causing this problem.

Hi John...can you please explain what's a graph form (freeze frame)?

[khorrassany Junior Member Find all posts View Profile Close khorrassany]

Thanks John that's very useful info. It will definitely save money if I have the knowledge and resources to sort it out, but unfortunately most of the mechanics here are very old school and not familiar with the new technology even only a few own cheap diagnostic tools that are mainly used for airbag light, etc...
Now I have to check for a diagnostic tool around here where I can monitor the sensors.

Any recommendation for the list of sensors that I have to go through?

[khorrassany Junior Member Find all posts View Profile Close khorrassany]

The crankshaft position sensor, I would be doing some diagnostics on. This is code 12. But I also would be going into data list and having a look at everything including the temperature sensor.
Data list is a general look at everything, just so you know.
Don't throw out your old ECU either, as there is probably nothing wrong with it.
The Roo.

Thanks mate. Of course won't throw it away. What made me buy it is that I looked for it here in the market and it wasn't available at all even at used spare parts shop, so I decided to buy it and keep it in my stock of spare. Will check and keep you posted.

[khorrassany Junior Member Find all posts View Profile Close khorrassany]

I hate to keep raising this topic but unfortunately still unsolved my issue with code 14. I'm asking for some patience as it's getting on my nerves and I'm determined to solve it!

Bought a plug converter from 22pin to OBD2 but it's not working on any of the OBD diagnostic tool I tried on. So had to search for another alternative and finally found a diagnostic tool with the 22pin and got the following:
Code 14 IGT or IGF circuit of ignition system fault

Tried to do the freezing frame but unfortunately people operating the tool have very limited knowledge and I suck when it comes to electrical stuff so I'm not helpful either.


Can someone please list the sensors or items that need to be checked for causing Code 14 error?

I know the following:

1. Timing Control Valve
2. Wastegate Turbo
3. Fuel starvation & Air Filter

Thanks in advance

[khorrassany Junior Member Find all posts View Profile Close khorrassany]

Any recommendations for diagnostic tools that works on the 22pin Toyota KZJ-90 is highly appreciated thx in advance!

[t303 Senior Member Find all posts View Profile Close t303]

AFAIK, the 95 series never had any type of body computer and therefore no OBDII or data output The only codes you can retrieve are from the ECD which you have already done. Not sure if the 90 series are any different?

[scottkz Senior Member Find all posts View Profile Close scottkz]

Some of the late 90s/95s had OBD2 but are not " compliant" so no data flow . You can only get codes from them

[t303 Senior Member Find all posts View Profile Close t303]

I hate to keep raising this topic but unfortunately still unsolved my issue with code 14. I'm asking for some patience as it's getting on my nerves and I'm determined to solve it!

Bought a plug converter from 22pin to OBD2 but it's not working on any of the OBD diagnostic tool I tried on. So had to search for another alternative and finally found a diagnostic tool with the 22pin and got the following:
Code 14 IGT or IGF circuit of ignition system fault

Tried to do the freezing frame but unfortunately people operating the tool have very limited knowledge and I suck when it comes to electrical stuff so I'm not helpful either.


Can someone please list the sensors or items that need to be checked for causing Code 14 error?

I know the following:

1. Timing Control Valve
2. Wastegate Turbo
3. Fuel starvation & Air Filter

Thanks in advance

Dunno about ignition system fault on a diesel???
Anyways, unfortunately I don't think you can get any further data or diagnostics from the ECD so it is back to basics. As I said previously I have had a 14 when I ran a tank dry, so I can only deduce that the stumbling engine throws the timing signal out and throws the code as an effect rather than cause. You may have to go back a step in the fault chain to figure out what else might cause the timing control fault, but I can't think of anything at the moment. I guess that if it isn't making expensive noises you can rule out a mechanical problem, and there isn't much on the electrical side except the sensors on the crank or the IP itself, so it seems if you have ruled out fuel it might be time to start changing sensors. I think you can rule out wastegate as there is no sensor on it AFAIK; perhaps nut out if an overboost can somehow throw the code (but I can't imagine how, and I think there is a code for overboost anyway). Sorry I can't give you any help other than make sure you go through the basics first. You have checked/cleaned the connectors on all the sensors and associated wiring?