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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Electronic Control Module (ECM)
The TAC module is the control center for the electronic throttle system. The TAC module is located inside the
ECM and is not serviceable separately. The TAC module and the ECM monitor the commanded throttle position and compare it to the actual throttle position. This is accomplished by monitoring the APP and the TP sensors. These two values must be within a calibrated value of each other. The ECM module also monitors each individual circuit of the TP sensor and the APP to verify proper operation.