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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Diagnosis System

DIAGNOSIS SYSTEM

1. BUS CHECK

HINT: The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the hand held tester via CAN VIM.










a. Select "BUS CHECK" from the "OBD/MOBD MENU" screen.
b. Press "ENTER" on the hand held tester via CAN VIM.
c. The screen displays the ECUs and sensors that are properly connected to the CAN communication system.

HINT: There is a communication stop in the system of any properly connected ECUs or sensors that are not displayed.

2. CHECK FOR INSTALLED SYSTEMS (ECUS & SENSORS) THAT ADOPT CAN COMMUNICATION




a. Systems (ECUs, sensors) that adopt CAN communication vary depending on the vehicle's optional settings. Check which systems (ECUs, sensors) are installed on the vehicle.