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Home >> Mazda >> 2013 >> 5 Grand Touring >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic [Body Control System) >> DTC U0001:88/U0100:00/U0101:00/U0121:00/U0151:00 [BCM] >> Notes

DTC U0001:88/U0100:00/U0101:00/U0121:00/U0151:00 [BCM]: Notes

DESCRIPTION
  • U0001:88
    • CAN system communication error (HS-CAN)
  • U0100:00
    • Communication error to PCM
  • U0101:00
    • Communication error to TCM
  • U0121:00
    • Communication error to DSC HU/CM
  • U0151:00
    • Communication error to SAS control module
DETECTION CONDITION 
  • U0001:88
    • BCM detects the malfunction in the CAN bus communication line (HS-CAN).
  • U0100:00
    • BCM cannot receive the signal from PCM for 5 s or more  when the ignition is switched to ON.
  • U0101:00
    • BCM cannot receive the signal from TCM for 5 s or more  when the ignition is switched to ON.
  • U0121:00
    • BCM cannot receive the signal from DSC HU/CM for 5 s or more  when the ignition is switched to ON.
  • U0151:00
    • BCM cannot receive the signal from SAS control module for 5 s or more  when the ignition is switched to ON.
FAIL-SAFE FUNCTION 
  • U0001:88
    • Stops CAN communication.
  • U0100:00
    • Inputs the engine speed of 0 rpm  .
    • Inputs the vehicle speed of 555.34 km/h {345.07 mph}  .
  • U0101:00
    • Stops the liftgate latch release operation.
  • U0121:00
    • -
  • U0151:00
    • Continues the central door lock control.
POSSIBLE CAUSE 
  • Malfunction in CAN bus communication line
  • Malfunction in CAN line between BCM and PCM
  • Malfunction in CAN line between BCM and TCM
  • Malfunction in CAN line between BCM and DSC HU/CM
  • Malfunction in CAN line between BCM and SAS control module
SYSTEM WIRING DIAGRAM  -