C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
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Old Feb 7, 2006 | 12:19 AM
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I have had a brain breeze how do you check for fault codes. thanks in advance
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Old Feb 7, 2006 | 08:39 AM
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I believe you hold the options button while pressing the fuel button 4 times.
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Old Feb 7, 2006 | 09:29 AM
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How to Enter Diagnostic Mode
The "diagnostic display" mode is entered with the following procedure:
1) Turn on the ignition but don't start the engine.
2) Press the "reset" button to turn off any warning messages
3) Press and hold "options"
4) While holding "options", press "fuel" four times within a 10-second period.
When first engaged the on-board diagnostics go into an "automatic" mode which shows all parameters: PCM-TCS-RTD-BCM-IPC-radio-HVAC-LDCM-RDCM-SCM-RFA. If there are no problems, you will see "no more codes" on the ICP display.
The computer will show two kinds of codes, "current" and "history," designated "C" or "H". A current code indicates a malfunction is present in the system whose module is displaying data. A history code indicates a past problem.
When the screen displays "manual diagnostics," select the desired module by pressing the "options" button to go forward or the "trip" button to go back. Press "gages" to go forward or "fuel" to go back.
To exit the diagnostic mode at any time, press "E/M". If you want to erase or "clear" codes, press " reset


I you need a list of codes, PM me
Rich
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Old Feb 7, 2006 | 12:06 PM
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This is the absolute best C5 Code web site!!!

http://www.corvettedoctor.com/Code_Main.html

www.corvettedoctor.com

http://www.corvettedoctor.com/index.html
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