Operation CHARM: Car repair manuals for everyone.

Description of On-Board Diagnostics

DIAGNOSIS SYSTEM

1. DESCRIPTION
a. The hybrid vehicle control ECU controls the function of the immobilizer system on the vehicle.
Data from the immobilizer system and the Diagnostic Trouble Code (DTC) can be read in the Data Link Connector 3 (DLC3) of the vehicle. When a malfunction occurs in the immobilizer system, even though the security indicator lamp does not come on, DTCs can be checked.
Therefore, when the immobilizer system seems to be a malfunction, use the intelligent tester to check for a malfunction and repair it.