DTC U0198:02 [CONNECTIVITY MASTER UNIT (E)]

id1602a10210a4

Outline

System malfunction location

Communication error with emergency call unit

Detection condition

•  The connectivity master unit (CMU) detects a communication interruption or communication error with the emergency call unit for approx. 6 s.

Fail-safe

Not applicable

Possible cause

•  Malfunction in CAN bus communication line

•  Emergency call unit malfunction

•  Connectivity master unit (CMU) malfunction

System wiring diagram

Not applicable

System malfunction location	Communication error with emergency call unit
Detection condition	• The connectivity master unit (CMU) detects a communication interruption or communication error with the emergency call unit for approx. 6 s.
Fail-safe	Not applicable
Possible cause	• Malfunction in CAN bus communication line • Emergency call unit malfunction • Connectivity master unit (CMU) 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)