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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3 Checking Logic Module

1. Connect diagnostic read-out tool to engine test connector.
2. Cycle ignition switch On, Off, On, Off, On within 5 seconds.
3. If code 88 is indicates on read-out tool display, proceed to Test 4.
4. If code 88 is not indicated, replace logic module.
CAUTION: Before replacing the logic module make sure your diagnostic readout box is operational and that there is not an open circuit in the wires between the logic module and diagnostic connector.