Parent/child module diagnosis
- Each CAN bus consists of a parent module which integrates multiple modules, and other child modules.
- When a child module detects a malfunction, it sends the malfunction information to the parent module via CAN communication, and the parent module outputs a DTC according to the malfunction content.NOTE:
- DTCs are not supported, but because the data logger also has child modules which it supports, verify DTCs even with the child modules if the PID/data monitor function or simulation function is used.
- The parent/child module relationship for each CAN bus is as follows.
-: Not applicable
Parent module Body control module (BCM) Vehicle control module PCM TCM Child module Electrical supply unit (ESU) Rear side radar sensor NOx sensor Shift panel (indicator) Door-electrical supply unit Front radar sensor PM sensor - LF control unit Parking assist unit (ultrasonic) - - Light control module Driver monitoring camera unit - - Instrument cluster 360° view monitor control module - - Active driving display Parking assist unit (optical) - - Steering angle sensor Forward sensing camera (FSC) - - - Front side radar sensor - - *: Differs depending on availability of each module, based on the specification.