DTC U0122:87 [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE (E)]

id1502b60651bb

Without Mazda M Hybrid

Outline

System malfunction location

Communication error with DSC HU/CM

Detection condition

•  The adaptive front lighting system (AFS) control module cannot receive CAN signal from the DSC HU/CM.

Fail-safe

•  The swivel actuator is moved to the center.

•  The headlight leveling actuator is stopped at the position when the malfunction is determined.

Possible cause

•  Malfunction in CAN communication line between DSC HU/CM and adaptive front lighting system (AFS) control module

System wiring diagram

Not applicable

System malfunction location	Communication error with DSC HU/CM
Detection condition	• The adaptive front lighting system (AFS) control module cannot receive CAN signal from the DSC HU/CM.
Fail-safe	• The swivel actuator is moved to the center. • The headlight leveling actuator is stopped at the position when the malfunction is determined.
Possible cause	• Malfunction in CAN communication line between DSC HU/CM and adaptive front lighting system (AFS) control module
System wiring 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

Communication error with electronically controlled brake unit

Detection condition

•  The adaptive front lighting system (AFS) control module cannot receive CAN signal from the electronically controlled brake unit.

Fail-safe

•  The swivel actuator is moved to the center.

•  The headlight leveling actuator is stopped at the position when the malfunction is determined.

Possible cause

•  Malfunction in CAN communication line between electronically controlled brake unit and adaptive front lighting system (AFS) control module

System wiring diagram

Not applicable

System malfunction location	Communication error with electronically controlled brake unit
Detection condition	• The adaptive front lighting system (AFS) control module cannot receive CAN signal from the electronically controlled brake unit.
Fail-safe	• The swivel actuator is moved to the center. • The headlight leveling actuator is stopped at the position when the malfunction is determined.
Possible cause	• Malfunction in CAN communication line between electronically controlled brake unit and adaptive front lighting system (AFS) control module
System wiring 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)].)