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)

Or, hide this message: temporarily or permanently

Test B

PINPOINT TEST B: NO COMMUNICATION WITH THE DRIVER DOOR MODULE (DDM)


Test B1:






Test B2:






Normal Operation
The DDM is power by battery voltage from circuits 29-AJ80 (OG) and ignition voltage circuit 29S-AJ86 (OG/BU) and is supplied ground on circuits 91-AJ80 (BN/BU) and 31-AJ80B (BK/OG).

Possible Causes
No communication with driver door module can be caused by:
- fuse(s).
- wiring, terminals, or connectors.
- a faulty DDM.