Operation CHARM: Car repair manuals for everyone.
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

- Intermittent Malfunctions


An intermittent problem may or may not set a diagnostic trouble code. If it is an intermittent failure, a Diagnostic Trouble Code Chart is not used. Consult the Diagnostic Aids within diagnostic chart corresponding to the intermittent diagnostic trouble code. Also, refer to the matrix charts under "Diagnosis by Symptom". Testing and Inspection

A physical/visual inspection of the applicable sub-system most often will resolve the problem. Use of the customer snap-shot and Scan tool snap-shot may isolate the malfunction.