Operation CHARM
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Porsche
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1989
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928 GT V8-4957cc 5.0L
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Reading and Clearing Diagnostic Trouble Codes
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Clearing Diagnostic Trouble Codes
Clearing Diagnostic Trouble Codes
After malfunctions have been repaired clear trouble codes as follows:
1.
With engine off, turn
ignition switch
to ON position.
2.
Fully depress
accelerator pedal
for more than 11 seconds.