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

Symptom Troubleshooting Versus DTC Troubleshooting

Symptom Troubleshooting Versus DTC Troubleshooting
Some symptoms will not trigger diagnostic trouble codes (DTCs) or cause the D indicator to blink. If the malfunction indicator lamp (MIL) was reported ON or the D indicator has been blinking, check for DTCs. If the vehicle has abnormal symptom, and there are no DTCs stored, go to the symptom troubleshooting index. Symptom Troubleshooting Index

Check the list of probable cause(s) for the symptom, in the sequence listed, until you find the problem.