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)

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Scan Tool Testing and Procedures


How to End a Troubleshooting Session

This procedure must be done after any troubleshooting.

1. Clear the DTC(s) with the Scan Tool or HDS, or reset the PCM by removing the No. 6 (PCM) fuse in the under-hood fuse/relay box for more than 10 seconds.
2. Turn the ignition switch ON (II).
3. Start the engine in the P or N position, and warm it up to normal operating temperature (the radiator fans come on).
4. To verify that the problem is repaired, test-drive the vehicle for several minutes at speeds over 30 mph (50 km/h) or in freeze data range.