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
Resistance Tests
Measuring Resistance At ECM Connector:
ECM Terminal Resistances:
The ECM and it's circuits can be checked at the ECM terminals by measuring voltage and resistance.
CAUTION: The ECM cannot be checked by itself. Never connect a DVOM to the ECM pins without the harness connected.
RESISTANCE CHECKS -
Remove ECM from body.
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Disconnect harness from ECM.
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Check voltage at back side of harness connector.