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DTC U0415:86 [EMERGENCY CALL UNIT]

id0902s6126800

Without Mazda M Hybrid

Outline

System malfunction location

Error signal received from DSC HU/CM

Detection condition

•  The emergency call unit received error signal from the DSC HU/CM.

Fail-safe

Not applicable

Possible cause

•  Malfunction in CAN communication line between the DSC HU/CM and emergency call unit

•  DSC HU/CM malfunction

•  Emergency call unit malfunction

System wiring diagram

Not applicable

Connector diagram

Not applicable

System malfunction location	Error signal received from DSC HU/CM
Detection condition	• The emergency call unit received error signal from the DSC HU/CM.
Fail-safe	Not applicable
Possible cause	• Malfunction in CAN communication line between the DSC HU/CM and emergency call unit • DSC HU/CM malfunction • Emergency call unit malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic procedure

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

With Mazda M Hybrid

Outline

System malfunction location

Error signal received from electronically controlled brake unit

Detection condition

•  The emergency call unit received error signal from the electronically controlled brake unit.

Fail-safe

Not applicable

Possible cause

•  Malfunction in CAN communication line between the electronically controlled brake unit and emergency call unit

•  Electronically controlled brake unit malfunction

•  Emergency call unit malfunction

System wiring diagram

Not applicable

Connector diagram

Not applicable

System malfunction location	Error signal received from electronically controlled brake unit
Detection condition	• The emergency call unit received error signal from the electronically controlled brake unit.
Fail-safe	Not applicable
Possible cause	• Malfunction in CAN communication line between the electronically controlled brake unit and emergency call unit • Electronically controlled brake unit malfunction • Emergency call unit malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic procedure

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