Operation CHARM: Car repair manuals for everyone.
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 Communication With Electronic Brake & Traction CNTRL Module

Diagnostic Chart:




Schematic:




The electronic brake traction control module (EBTCM) has a dedicated KW2000 data link. This data link is only used for diagnostics/reprogramming. If the Scan tool cannot establish communications with the EBTCM the fault could be caused by:
^ KW2000 link from the DLC to the EBTCM is open, shorted to ground, or shorted to voltage.
^ A fault in the EBTCM
^ Power/ground circuit fault to the EBTCM.