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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Control Module: Testing and Inspection

The Malfunction Indicator Lamp (MIL) indicates Diagnostic Trouble Code (DTC) 30 - A problem in the Automatic Transmission (A/T) Fuel Injection (FI) Signal A circuit between Transmission Control Module (TCM) and Engine Control Module (ECM).

The Malfunction Indicator Lamp (MIL) indicates Diagnostic Trouble Code (DTC) 31 - A problem in the A/T FI Signal B circuit between Transmission Control Module (TCM) and ECM.