Operation CHARM
: Car repair manuals for everyone.
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Porsche
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1989
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928 CS V8-4957cc 5.0L
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Repair and Diagnosis
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Powertrain Management
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Testing and Inspection
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Reading and Clearing Diagnostic Trouble Codes
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Reading Diagnostic Trouble Codes
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Using System Tester 9288
Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la
or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
Or, hide this message:
temporarily
or
permanently
Using System Tester 9288
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Connect the System Tester 9288 via the adapter line 9288/1 to the 19 pin diagnostic connector, located under the booster cover.
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Switch on tester and operate according to the instructions displayed.