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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No CCD Message From Body Control Module

WHEN MONITORED
Anytime the ignition is ON.

SET CONDITION
No CCD messages are received from the BCM for 30 seconds.

THEORY OF OPERATION
The PCM and BCM communicate across the CCD bus system.

- Information is needed from either module to operate their respective systems.

PROBABLE CAUSES
- Open CCD bus (+) or (-) circuit between the modules
- BCM not powered up
- Failed BCM
- Failed PCM