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Hi Folks, Mr new member wet behind the ears here,, hoping you can help with a problem I have,. My wife has a 2001 jimny and the engine management light has come on, the engine is still running fine. it did recently fail its MOt test (UK) due to emissions being too high, the dealer cured this by adding something to the fuel and getting us to take it for a longish run (my Wife runs about town a lot so it doesnt get long runs much), this cured the emissions problem but now the managment light is on, could there be a connection? I assume the additive to the fuel de-coked the engine and I wonder if that has dirtied up a sensor? can anyone help? if it is a sensor where are they located? thanks in advance for any help :D
 

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get a code reader and pull the fault codes on it asap. If you burned a bunch of crap out of the engine, it could have blocked up the catalytic converter. That could cause overheating of the exhaust manifold and warping of the head if you don't take care of it quickly. Other thing that it might be is a fouled O2 sensor. I can't think of much else that would be on the exhaust end that would tie into burning off carbon deposits.

Try and find out what the additive was and what it was supposed to do. If it was just a fuel injector cleaner then it shouldn't have effected your cat or your O2 sensors.
 

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If you are referring to a check engine light which is part of the emissions control system, it comes on as a reminder to check the system at specific mileage intervals.

CHECK ENGINE LIGHT:
The check engine light automatically comes on at the 50,000 mile (80,000km), 80,000 mile (128,000km) and 100,000 mile (160,000km) marks.

RESETTING:
The lamp reset switch is located on the left side of the dashboard, mounted on the steering column support or to the left speaker. The lamp can be reset by moving the switch upwards and then downwards. If the switch remains on after being reset, check the system.
 

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If you are referring to a check engine light which is part of the emissions control system, it comes on as a reminder to check the system at specific mileage intervals.

CHECK ENGINE LIGHT:
The check engine light automatically comes on at the 50,000 mile (80,000km), 80,000 mile (128,000km) and 100,000 mile (160,000km) marks.

RESETTING:
The lamp reset switch is located on the left side of the dashboard, mounted on the steering column support or to the left speaker. The lamp can be reset by moving the switch upwards and then downwards. If the switch remains on after being reset, check the system.
I read somewhere that the reset switches aren't on UK vehicles (?) I looked on mine and couldn't see one.
 

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I read somewhere that the reset switches aren't on UK vehicles (?) I looked on mine and couldn't see one.
Good point... Maybe or maybe not...

But when I looked for mine the first time, it was not easy to find. Blended in pretty will with the under dash apparatus. Just in case, I'll take a pic of the location and the switch in so that the group can verify whether their vehicles are equipped with it or not.
 

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make sure you know what vehicle you're talking about when you reply. A 2001 jimny is a completely different vehicle than the older jimny/samurai/sierra. There is no check engine switch on it. It has a diagnostic port for an OBD2 code reader and you can reset the check light and codes with a scantool. You can buy a code reader that gives the codes and reset function for about $50 USD and more full featured readers can cost over $200 USD. You can also buy the clones of the more expensive scantool readers on ebay for about 2 dollars + shipping and handling (about another 15 to 20 dollars) They have usb plugs so you can use a laptop to view the codes and also use it as a realtime diagnostic tool to view the engine sensor readouts.
 

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A 2001 Jimny may still have the old style 6-pin connector to flash codes out on the Check Engine Light. I think the G13BB engine models have these and the M13A engines don't but I'm not sure when the cut off date was. If it has this facility then the connector will be behind the glovebox.
There is no mileage nag switch.
Code readers are notoriously unreliable on Suzukis so if you do buy one then its best to get one that is known to work.
A couple of good sites for Jimnys are:

www.jimny.se - a site made for Suzuki Jimny and it's owners only
Home Page - BigJimny Website
 

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I just got a Jimny ECU for repair, this one is from a 2000 model with the G13BB engine it is OBD1 not OBD2 I have been able to communicate to it with my own OBD1 software.
If you are going to buy a scanner you need to verify which protocol it uses. It would seem that G13BB emgined models are OBD1, M13A engined models are OBD2. OBD1 models will have the 6-pin diagnostic connector that allows you to read our fault codes using the Check Engine Light.
 
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