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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C1239
C1239-EMISSIONS ROLLS TEST ACTIVEFor a complete wiring diagram
refer to the Wiring Information Electrical Diagrams.
Theory of OperationThe functional effects are that the output signal for all wheel speeds mimic the wheel with the highest wheel speed.
This DTC sets when the Emissions Rolls Test is active.
Close out the Emissions Rolls Test though the FCM.