Page 228 - 2019 Technical NMT Hybrid4

Connected Services – eCall
Telematics

 When the engine switch is on (IG), communication telematics box

performs the check operation

Checks for open in the microphone and Checks for the
speaker circuits, between it and the
Communication telematics transceiver Communication malfunction of the
Telematics Box Telematics Box microphone and
speaker

Microphone Telematics Microphone
and and
Speaker Transceiver Speaker

If the malfunction occurs, DTC is output

DTC No. Detection Item DTC Detection Condition

Current at terminal MCVD exceeds the malfunction
B1572 Microphone Error
threshold for 20 seconds while the engine switch is ON

B1AC2 Cbox Malfunction Communication telematics box internal malfunction