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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Check Sheet Results (Example)

Check Sheet Results (Example):






NOTE: If "NG" is displayed on "CAN COMM" for the diagnosed control unit, replace the control unit.

INSPECTION
Proceed trouble diagnosis according to the check sheet results (example).
Case 1: Replace ECM.
Case 2: Replace ABS/TCS control unit.
Case 3: Replace TCM.
Case 4: Check ECM Circuit. Refer to "ECM CIRCUIT CHECK" . ECM Circuit Check
Case 5: Check ABS/TCS control unit Circuit. Refer to "ABS/TCS CONTROL UNIT CIRCUIT CHECK". ABS/TCS Control Unit Circuit Check
Case 6: Check TCM Circuit. Refer to "TCM CIRCUIT CHECK". TCM Circuit Check
Case 7: Check CAN communication Circuit. Refer to "CAN COMMUNICATION CIRCUIT CHECK". CAN Communication Circuit Check