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Old 01-28-2014, 01:26 PM   #1
SirBungus
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Default Service Wrench Light now on after disconnecting battery

I have a 96 saturn sc2 that failed inspection with 2 codes. No SES light on or Service wrench light on. I disconnected the battery to clear the codes.
After reconnecting the battery and starting the car the Service Wrench light now comes on after 30 or 40 secs. Then went to Autozone to check the codes. AZ found no codes. How can I reset this light so I can get thru inspection? Or since the service wrench code if non emission related, would I pass emission inspection if no SES codes are present? Any asssistance would be appreciated.

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Old 01-28-2014, 01:29 PM   #2
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Default Re: Service Wrench Light now on after disconnecting battery

its for the oil change go in the fuse box under the hood... it has instructions on the panel whoever did ur oil change did not reset it... Also AUTOZONE FTW im working there as a college student

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Old 01-28-2014, 01:42 PM   #3
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Default Re: Service Wrench Light now on after disconnecting battery

no oil reset in fuse box or instructions on lid of fuse box. Am I missing something?

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Old 01-28-2014, 01:48 PM   #4
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Default Re: Service Wrench Light now on after disconnecting battery

The wrench light is for anything not related to emissions control. The check engine light being ON is the light that will fail emissions inspection without having to go for inspection. Whether or not the wrench light will stop state inspection depends on your state inspection regulations. Check your DMV or call any garage that does inspections.

Most wrench light errors are about blown bulbs so check - anywhere a lamp is used and blows can turn on the wrench light.

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Old 01-28-2014, 06:32 PM   #5
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Default Re: Service Wrench Light now on after disconnecting battery

Are you referring to all bulbs in the vehicle, or just those in the instrument cluster?

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Old 01-28-2014, 06:39 PM   #6
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Default Re: Service Wrench Light now on after disconnecting battery

All important bulbs.

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Old 01-28-2014, 07:54 PM   #7
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Default Re: Service Wrench Light now on after disconnecting battery

SirBungus
I don't know what state you reside in, but in California a wrench light is not cause for smog inspection failure.
If the battery was disconnected recently that will cause a "not ready" condition until the computer resets.
Also AFAIK the wrench light has nothing to do with oil changes in the '96 model year.
Go into the user CP give us a location where you live. You might get better information specific to your problem.

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Old 01-28-2014, 08:47 PM   #8
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Default Re: Service Wrench Light now on after disconnecting battery

I live in New Jersey. In 2010 they changed the inspection requirements to be only emission specific and not safety or mechanical.

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Old 01-28-2014, 09:38 PM   #9
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Default Re: Service Wrench Light now on after disconnecting battery

Careful how you describe exemptions. Safety and mechanical includes suspension, brakes, all external lighting, chassis, tires, steering, etc.. All are related to safety and are mechanical by design and operation. Except lights. Even wiper blades are a safety issue along with a certain length of cracked windshield.............

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Old 01-29-2014, 11:45 AM   #10
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Default Re: Service Wrench Light now on after disconnecting battery

Quote:
Originally Posted by Nicktheviperman View Post
its for the oil change go in the fuse box under the hood... it has instructions on the panel whoever did ur oil change did not reset it...
The 1996 doesn't have an oil life monitor.

To the OP:

Are you doing an Emissions or Safety Inspection?

There are different types of information for emissions testing. Stored codes (SES light on when first stored. The light may go out when certain conditions are met but code is still present in a stored state) Pending codes (errors that are not quite enough to set a code) and Emissions readiness. Emissions Readiness status tests are a self diagnostic for emissions related components. Although you have no codes you must check the emissions readiness status as well.

If you are doing an emissions inspection check with your local DMV for allowable exemptions. In my state most emissions readiness or a SES light will pretty much be an automatic failure for OBD tests, (Catalyst efficiency for example) but in some states it has been reported that they will allow certain emissions readiness status to be incomplete, for example not ready (but not failed) and will still pass depending on the monitor in question. I believe these exemptions are in more relaxed states were air pollution is not as tightly regulated and most likely won't apply to you if in NJ.

Also pull the PCM B fuse for a few minutes to reset the PCM instead of disconnecting the battery if you do not have a code reader. It is a lot easier and you will retain radio station memory and wont have to reset the clock. Also note that resetting the PCM will cause all Emissions Readiness status tests to be reset to not ready and you will have to complete a drive cycle to have them go to ready status again before emissions testing.

Jim

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Old 01-29-2014, 12:07 PM   #11
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Default Re: Service Wrench Light now on after disconnecting battery

Its not advisable to pull the pcm fuse when state inspection is due since the car will take longer to perform the entire emissions self test. Since the OP already disconnected his battery cables and the car is already performing its drive cycle, pulling the pcm fuse only resets and forces emissions self tests again, prolonging the drive cycle. Better to drive it as is to let emissions self tests complete.

The way to know how far along emissions self tests are going or if completed will be to use a reader. Readers will display readiness monitors, the sensors used for normal engine running in a sequence beginning with a cold start up. All USA cars using OBD II have emissions self tests run every time the engine is started, car driven. The readiness monitors are the coolant, map, evap, fuel pressure/vacuum, etc.. Each sensor is monitored and expected to output at certain times while driving with expected results. Any sensor not operating within a range will be flagged and displayed. This halts emissions self tests as 'Not Ready' and inspection stations will see this as soon as they plug into the OBD II system. The same can be seen with most readers to determine where readiness monitors halted during emissions self tests.

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Old 01-29-2014, 12:30 PM   #12
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Default Re: Service Wrench Light now on after disconnecting battery

Yes, I probably should have made that more clear to the OP to pull the PCM B fuse instead of disconnecting the battery if a reader is not available if or when he needs to reset the PCM in the future and not to be confused as being advised to do that and reset the PCM at this time. Although I did note that the emissions readiness will be reset to not ready status I can see where there could be some confusion by my recommendation to the OP.

Jim

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Old 01-29-2014, 12:59 PM   #13
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Default Re: Service Wrench Light now on after disconnecting battery

Did you read about another New Jerseyan posting a few years back about failing state emissions due to a 'not ready' status? This member (woman) was advised to replace her thermostat (coolant never reaching operating temperatures) but her mechanic relative refused to listen and strongly advised her to simply drive a bit. Several hundred miles later, her car never went 'ready' until it was pointed out that her mechanic relative was a moron. Once she had the t-stat replaced the emissions self test went 'ready' and passed state inspection. Saturnfans told her from the beginning to replace the worn out t-stat but an idiot mechanic refused to listen to advice, prolonging this woman's frustrations.

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Old 01-29-2014, 04:37 PM   #14
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Default Re: Service Wrench Light now on after disconnecting battery

You guys have been great thus far. One additional question is what is considered a drive cycle. Is is just start, travel and stop or must a certain time or mileage occur to complete a cycle?

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Old 01-29-2014, 07:54 PM   #15
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Default Re: Service Wrench Light now on after disconnecting battery

Saturn drive cycle;
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Old 03-27-2014, 01:48 PM   #16
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Default Re: Service Wrench Light now on after disconnecting battery

Thanks for all the help guys! Just passed inspection. Completing the driving cycle did the trick with gettting the ECM in ready status with no codes present. Replacing burned out SES bulb was the last part to passing inspection. I now have no dash lights on that are not supposed to be on. Thanks again, you guys were right on!

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