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

Flow of Diagnosis

Flow Of Diagnosis:





1. Get accurate description of complaint. Road test vehicle to verify. Perform underhood inspection. For further information use the DRIVEABILITY WORKSHEET and VEHICLE REPAIR HISTORY forms below.
2. Check TSB'S for manual updates, testing procedures, warranty and recall information.
3. Refer to Powertrain Management/Computers and Control Systems/Testing and Inspection/Procedures.
4. Refer to Powertrain Management/Computers and Control Systems/Testing and Inspection/Procedures.
NOTE: The DRB II or an equivalent scan tool is required for proper diagnosis and testing of the vehicle.
5. Refer to Powertrain Management/Computers and Control Systems/Testing and Inspection/Procedures.
NOTE: The DRB II or an equivalent scan tool is required for proper diagnosis and testing of the vehicle.

Driveability Worksheet:




Driveability Worksheet:





DRIVEABILITY WORKSHEET

Vehicle Repair History:




Vehicle Repair History:





VEHICLE REPAIR INFORMATION