DTC U0079:00 [CONNECTIVITY MASTER UNIT]

id1602a1007400

Outline

System malfunction location

Unit communication error (CAN)

Detection condition

•  The connectivity master unit (CMU) detects a CAN BUS communication line (CAN BUS No.7) malfunction for 2.5 s or more.

Fail-safe

•  The connectivity master unit (CMU) is put in sleep mode and it does not launch.

Possible cause

•  Malfunction in CAN bus communication line

•  Connectivity master unit (CMU) malfunction

•  Body control module (BCM) malfunction

System wiring diagram

Not applicable

System malfunction location	Unit communication error (CAN)
Detection condition	• The connectivity master unit (CMU) detects a CAN BUS communication line (CAN BUS No.7) malfunction for 2.5 s or more.
Fail-safe	• The connectivity master unit (CMU) is put in sleep mode and it does not launch.
Possible cause	• Malfunction in CAN bus communication line • Connectivity master unit (CMU) malfunction • Body control module (BCM) malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

• Perform an inspection in accordance with the multiplex communication system diagnostic procedure.(Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual)