DTC U0001:88/U0100:00/U0121:00/U0151:00/U0155:00 [MAZDA ERA-GLONASS CONTROL MODULE]

id0902r6084200

Description
•  U0001:88
?  Unit communication error (HS-CAN)
•  U0100:00
?  Communication error with PCM
•  U0121:00
?  Communication error with DSC HU/CM
•  U0151:00
?  Communication error with SAS control module
•  U0155:00
?  Communication error with instrument cluster
Detection condition
•  U0001:88
?  The Mazda ERA-GLONASS control module cannot detect a CAN bus communication line (HS-CAN) signal with the ignition switched ON (engine off or on).
•  U0100:00
?  The Mazda ERA-GLONASS control module cannot receive a CAN signal from PCM for 5 seconds with the ignition switched ON (engine off or on).
•  U0121:00
?  The Mazda ERA-GLONASS control module cannot receive a CAN signal from DSC HU/CM for 60 seconds with the ignition switched ON (engine off or on).
?  The Mazda ERA-GLONASS control module received error signal from DSC HU/CM for 60 seconds with the ignition switched ON (engine off or on).
•  U0151:00
?  The Mazda ERA-GLONASS control module cannot receive a CAN signal from SAS control module for 1 seconds with the ignition switched ON (engine off or on).
•  U0155:00
?  The Mazda ERA-GLONASS control module cannot receive a CAN signal from instrument cluster for 5 seconds with the ignition switched ON (engine off or on).
Fail-safe function
•  U0001:88
?  Not applicable
•  U0100:00
?  Test mode is not activated
•  U0121:00
Signal errors in all wheel speed signals:
?  Determines that the vehicle is in a stopped condition using the TEL antenna.
Signal error in any wheel speed signal:
?  Determines that the vehicle is in a stopped condition using the normal wheel speed signal.
•  U0151:00
?  Not applicable
•  U0155:00
?  Test mode is not activated
Possible cause
•  Malfunction in CAN bus communication line
•  Malfunction in CAN communication line between the PCM and Mazda ERA-GLONASS control module
•  Malfunction in CAN communication line between the DSC HU/CM and Mazda ERA-GLONASS control module
•  Malfunction in CAN communication line between the SAS control module and Mazda ERA-GLONASS control module
•  Malfunction in CAN communication line between the instrument cluster control module and Mazda ERA-GLONASS control module
System wiring diagram
Not applicable

Diagnostic procedure

•  Perform the malfunction diagnosis according to the troubleshooting procedure for the multiplex communication system. (See FOREWORD [L.H.D.].)(See FOREWORD [R.H.D.].)