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

Preparation For Test - Section 22



Preparation for Test:
1. Battery voltage > 11 V,
2. Fuses ok,
3. Disconnect the battery negative cable prior to disconnecting or connecting any of the connectors of the control modules, otherwise fault codes may be stored in error in the memory.
4. CAN data lines are Ok.


NOTE: For test measuring purposes, the CAN connection to the following control modules must be connected.

PSE control module (A37)
Signal pickup-and activation module (SAM) (N10/1)

Special Tools:






Conventional tools, test equipment
Description Brand, model, etc.
Multimeter 1) Fluke models 23, 83, 85, 87

1) Available through the MBNA Standard Equipment Program.