DTC U0001:88/U0100:00/U0101:00/U0121:00/U0121:87/U0131:00/U0140:00/U0146:00/U0151:00/U0155:00 [START STOP UNIT]

id0902p6023800

Description
•  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
•  U0121:87
?  Communication error with DSC HU/CM
•  U0131:00
?  Communication error with electric power steering (EPS) control module
•  U0140:00
?  Communication error with front body control module (FBCM)
•  U0146:00
?  Communication error with instrument cluster
•  U0151:00
?  Communication error with SAS control module
•  U0155:00
?  Communication error with instrument cluster
Detection condition
•  U0001:88
?  Start stop unit detects the CAN bus communication line (HS-CAN) malfunction 10 times continuously with the ignition switched ON (engine off or on).
•  U0100:00
?  Start stop unit could not receive the CAN signal from the PCM for 1 s or more with the ignition switched ON (engine off or on).
•  U0101:00
?  Start stop unit could not receive the CAN signal from the TCM for 1 s or more with the ignition switched ON (engine off or on).
•  U0121:00
?  Start stop unit could not receive the CAN signal from the DSC HU/CM for 1 s or more with the ignition switched ON (engine off or on).
•  U0121:87
?  Start stop unit could not receive the CAN signal from the DSC HU/CM for 10 s or more with the ignition switched off.
•  U0131:00
?  Start stop unit could not receive the CAN signal from the electric power steering (EPS) control module for 1.2 s or more with the ignition switched ON (engine off or on).
•  U0140:00
?  Start stop unit could not receive the CAN signal from the front body control module (FBCM) for 5 s or more with the ignition switched ON (engine off or on).
•  U0146:00
?  Start stop unit could not receive the CAN signal from the instrument cluster for 5 s or more with the ignition switched ON (engine off or on).
•  U0151:00
?  Start stop unit could not receive the CAN signal from the SAS control module for 1 s or more with the ignition switched ON (engine off or on).
•  U0155:00
?  Start stop unit could not receive the CAN signal from the instrument cluster for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe
•  U0001:88
?  Sets to default signal.
?  Cancel the i-stop control. (With i-stop system)
•  U0100:00
?  Sets to default signal.
?  Cancel the i-stop control. (With i-stop system)
•  U0101:00
?  Sets to default signal.
•  U0121:00
?  Sets to default signal.
•  U0121:87
?  Sets to default signal.
•  U0131:00
?  Sets to default signal.
•  U0140:00
?  Sets to default signal.
•  U0146:00
?  Sets to default signal.
•  U0151:00
?  Sets to default signal.
•  U0155:00
?  Sets to default signal.
Possible cause
•  Malfunction in CAN bus communication line
•  Malfunction in CAN line between PCM and start stop unit
•  Malfunction in CAN line between TCM and start stop unit
•  Malfunction in CAN line between DSC HU/CM and start stop unit
•  Malfunction in CAN line between electric power steering (EPS) control module and start stop unit
•  Malfunction in CAN line between front body control module (FBCM) and start stop unit
•  Malfunction in CAN line between instrument cluster and start stop unit
•  Malfunction in CAN line between SAS control module and start stop unit
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.].)