The PCM is the engine controller. You don't want to remove that.
Removing the bulb would work.

Your YJ is OBD I, so you would need a scan tool with that capability.


On 29 Oct 2006 17:05:50 -0800, "Bob" <robert.pennington@robins.af.mil>
wrote:

>You are correct, any sources for a scan tool? I searched previous posts
>and there was some suggestions to remove the PCM. Does anyone know
>where that is on a 92? I looked and I could not find it. Thanks
>
>bllsht wrote:
>> If you're talking about the 'Maintenance Required' light, it is a
>> reminder to service emissions systems, not an indication that
>> something has failed. The 'Check Engine' light will tell you of a
>> failre.
>>
>> You will need a scan tool to tell the PCM to turn off the maintenance
>> lamp.
>>
>>
>>
>> On 29 Oct 2006 14:21:42 -0800, "Bob" <robert.pennington@robins.af.mil>
>> wrote:
>>
>> >I am new to this group and a new owner of a 92 YJ. What is the best way
>> >to look at diagnostic codes? The Maintenance Needed light is on and I
>> >would like to check the codes. At a quick glance on the web it seems
>> >like an expensive tool is needed? The vehicle has 120K miles and it
>> >seems to run fine (the light just recently came on).
>> >
>> >Thanks in Advance.

 

The PCM is the engine controller. You don't want to remove that.
Removing the bulb would work.

Your YJ is OBD I, so you would need a scan tool with that capability.


On 29 Oct 2006 17:05:50 -0800, "Bob" <robert.pennington@robins.af.mil>
wrote:

>You are correct, any sources for a scan tool? I searched previous posts
>and there was some suggestions to remove the PCM. Does anyone know
>where that is on a 92? I looked and I could not find it. Thanks
>
>bllsht wrote:
>> If you're talking about the 'Maintenance Required' light, it is a
>> reminder to service emissions systems, not an indication that
>> something has failed. The 'Check Engine' light will tell you of a
>> failre.
>>
>> You will need a scan tool to tell the PCM to turn off the maintenance
>> lamp.
>>
>>
>>
>> On 29 Oct 2006 14:21:42 -0800, "Bob" <robert.pennington@robins.af.mil>
>> wrote:
>>
>> >I am new to this group and a new owner of a 92 YJ. What is the best way
>> >to look at diagnostic codes? The Maintenance Needed light is on and I
>> >would like to check the codes. At a quick glance on the web it seems
>> >like an expensive tool is needed? The vehicle has 120K miles and it
>> >seems to run fine (the light just recently came on).
>> >
>> >Thanks in Advance.

 

The PCM is the engine controller. You don't want to remove that.
Removing the bulb would work.

Your YJ is OBD I, so you would need a scan tool with that capability.


On 29 Oct 2006 17:05:50 -0800, "Bob" <robert.pennington@robins.af.mil>
wrote:

>You are correct, any sources for a scan tool? I searched previous posts
>and there was some suggestions to remove the PCM. Does anyone know
>where that is on a 92? I looked and I could not find it. Thanks
>
>bllsht wrote:
>> If you're talking about the 'Maintenance Required' light, it is a
>> reminder to service emissions systems, not an indication that
>> something has failed. The 'Check Engine' light will tell you of a
>> failre.
>>
>> You will need a scan tool to tell the PCM to turn off the maintenance
>> lamp.
>>
>>
>>
>> On 29 Oct 2006 14:21:42 -0800, "Bob" <robert.pennington@robins.af.mil>
>> wrote:
>>
>> >I am new to this group and a new owner of a 92 YJ. What is the best way
>> >to look at diagnostic codes? The Maintenance Needed light is on and I
>> >would like to check the codes. At a quick glance on the web it seems
>> >like an expensive tool is needed? The vehicle has 120K miles and it
>> >seems to run fine (the light just recently came on).
>> >
>> >Thanks in Advance.

 

Thanks for the replies, I plan to unplug the bulb.

 

Thanks for the replies, I plan to unplug the bulb.

 

Thanks for the replies, I plan to unplug the bulb.

 

Autozone will scan your code for free. More than likely an oxygen sensor in
the exhaust went bad. Unplugging the bulb will automatically fail emissions
inspection if your state requires it. Why not just find out what the problem
is and fix it?

That said, if it's a Maintenance Required reminder light and not the Check
Engine light, there should be some way to reset it, you might try asking a
dealer.

"Bob" <robert.pennington@robins.af.mil> wrote in message
news:1162207548.163990.46330@m7g2000cwm.googlegrou ps.com...
>
> Thanks for the replies, I plan to unplug the bulb.
>

 

Autozone will scan your code for free. More than likely an oxygen sensor in
the exhaust went bad. Unplugging the bulb will automatically fail emissions
inspection if your state requires it. Why not just find out what the problem
is and fix it?

That said, if it's a Maintenance Required reminder light and not the Check
Engine light, there should be some way to reset it, you might try asking a
dealer.

"Bob" <robert.pennington@robins.af.mil> wrote in message
news:1162207548.163990.46330@m7g2000cwm.googlegrou ps.com...
>
> Thanks for the replies, I plan to unplug the bulb.
>

 

Autozone will scan your code for free. More than likely an oxygen sensor in
the exhaust went bad. Unplugging the bulb will automatically fail emissions
inspection if your state requires it. Why not just find out what the problem
is and fix it?

That said, if it's a Maintenance Required reminder light and not the Check
Engine light, there should be some way to reset it, you might try asking a
dealer.

"Bob" <robert.pennington@robins.af.mil> wrote in message
news:1162207548.163990.46330@m7g2000cwm.googlegrou ps.com...
>
> Thanks for the replies, I plan to unplug the bulb.
>