DTC U0001:88/U0100:00/U0101:00/U0121:00/U0151:00/U0155:00/U0214:00/U023A:00/U0515:00 [FRONT BODY CONTROL MODULE (FBCM)]

id0902p2010100

System malfunction location	U0001:88 •  Module communication error (HS-CAN) U0100:00 •  Communication error with PCM U0101:00 •  Communication error with TCM U0121:00 •  Communication error with DSC HU/CM U0151:00 •  SAS control module communication error U0155:00 •  Communication error with instrument cluster U0214:00 •  Communication error with start stop unit U023A:00 •  Communication error with forward sensing camera (FSC) U0515:00 •  SAS control module communication error
Detection condition	•  U0001:88 ―  The front body control module (FBCM) detects CAN bus communication line (HS-CAN) malfunction 10 times continuously. •  U0100:00 ―  The front body control module (FBCM) could not receive CAN signal from the PCM for 5 s or more. •  U0101:00 ―  The front body control module (FBCM) could not receive CAN signal from the TCM for 5 s or more. •  U0121:00 ―  The front body control module (FBCM) could not receive CAN signal from the DSC HU/CM for 5 s or more. •  U0151:00 ―  The front body control module (FBCM) could not receive CAN signal from the SAS control module for 5 s or more. •  U0155:00 ―  The front body control module (FBCM) could not receive CAN signal from the instrument cluster for 5 s or more. •  U0214:00 ―  The front body control module (FBCM) could not receive CAN signal from the start stop unit for 5 s or more. •  U023A:00 ―  The front body control module (FBCM) could not receive CAN signal from the forward sensing camera (FSC) for 5 s or more. •  U0515:00 ―  The front body control module (FBCM) could not receive CAN signal from the SAS control module for 5 s or more.
Fail-safe	•  U0001:88 ―  Control at the default signal value after holding the previous value for 5 s. •  U0100:00 ―  Control at the default signal value after holding the previous value for 5 s. •  U0101:00 ―  Control at the default signal value after holding the previous value for 5 s. •  U0121:00 ―  Control at the default signal value after holding the previous value for 5 s. •  U0151:00 ―  Control at the default signal value after holding the previous value for 5 s. •  U0155:00 ―  Control at the default signal value after holding the previous value for 5 s. •  U0214:00 ―  Control at the default signal value after holding the previous value for 5 s. •  U023A:00 ―  Control at the default signal value after holding the previous value for 5 s. •  U0515:00 ―  Control at the default signal value after holding the previous value for 5 s.
Possible cause	•  Malfunction in CAN bus communication line •  Malfunction in CAN line between the PCM and front body control module (FBCM) •  Malfunction in CAN line between the TCM and front body control module (FBCM) •  Malfunction in CAN line between the DSC HU/CM and front body control module (FBCM) •  Malfunction in CAN line between the instrument cluster and front body control module (FBCM) •  Malfunction in CAN line between the start stop unit and front body control module (FBCM) •  Malfunction in CAN line between the forward sensing camera (FSC) and front body control module (FBCM) •  Malfunction in CAN line between the SAS control module and front body control module (FBCM)
System wiring diagram	—

Diagnostic Procedure

DTC U0001:88 cannot be cleared

Note

•  When the M-MDS is connected to the DLC-2 with the ignition switched ON (engine off or on), DTC U0001:88 may be displayed and cannot be cleared even if there is no malfunction in the CAN. If DTC U0001:88 cannot be cleared, clear it using the following procedure:

1.  Switch the ignition OFF (LOCK).

2.  Disconnect the negative battery cable and wait for 1 min or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].)(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)

3.  Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].)(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)

4.  Clear the DTC for the front body control module (FBCM) using the M-MDS. (See CLEARING DTC [FRONT BODY CONTROL MODULE (FBCM)].)