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

CAN Communication Systems

PROBLEM SYMPTOMS TABLE

1. COMMUNICATION STOP MODE TABLE
a. Complete "CHECK CAN BUS LINE" to confirm that there is no malfunction in the CAN bus line. Select "BUS CHECK" on the hand-held tester via the CAN VIM.
b. Check the communication stop mode of the ECUs or sensors not displayed among the following: "ENGINE", "ABS/VSC/TRAC", "YAW /DECELERATE" or "STEERING SENSOR".




NOTE: If 2 or more ECUs or sensors are not displayed on the hand-held tester via the CAN VIM, perform troubleshooting for the communication stop mode of each un-displayed ECU or sensor. (Either side of the CAN sub bus lines may be open)

2. DTC COMBINATION TABLE




a. Perform troubleshooting according to the combination of DTCs output.