Operation CHARM: Car repair manuals for everyone.

Description of On-Board Diagnostics

DIAGNOSIS SYSTEM

DESCRIPTION
a. The multiplex network body ECU controls the functions of the theft deterrent system on the vehicle. Theft deterrent system data can be read in the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the intelligent tester to check for a malfunction and perform repairs.