General Information

Head Unit

U1982 Timeout Multimedia CAN Message (Body CAN Signal - Camera, ECS, Trip Computer, Alternator, Auto Light) - General Information

Component Location





General Description

MM (MultiMedia) CAN is composed of DATC (Air conditioner), Head unit, Media Unit (USB or i-Pod) and Rear Armrest Control. CAN is a communication system which consists of CAN_high line and CAN_low line to share system information between related control units (modules).

DTC Description

This code is set when there is no response from the Body CAN signal consisted of Camera, ECS, Trip Computer, Alternator and Auto Light system.

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data








FIG.1) Normal MM High CAN signal waveform while one input signal is given at armrest control switch of rear seat (measured waveform signal at MM High CAN line of head unit)
FIG.2) Normal MM Low CAN signal waveform while one input signal is given at armrest control switch of rear seat (measured waveform signal at MM Low CAN line of head unit)