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 AND CHILD MODULE RELATIONSHIP SPECIFICATION
| Parent module | Body control module (BCM) | Vehicle control module | TCM | ||
|---|---|---|---|---|---|
| Child module | Instrument cluster | Rear side radar sensor | Shift panel (indicator) | ||
| LF control unit | Front radar sensor | - | |||
| Door-electrical supply unit | Parking assist unit (ultrasonic) | - | |||
| Light control module | 360° view monitor control module | - | |||
| Electrical supply unit (ESU) | Forward sensing camera (FSC) | - | |||
| Active driving display | - | - | |||
| Steering angle sensor | - | - | |||
| Dash-electrical supply unit | - | - | |||
| Power liftgate (PLG) control module | - | - | |||
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