DTC U0073:00, U0100:00, U0121:00, U0131:00, U0155:00, U0214:00 [EW6A-EL]

id050234905900

DTC U0073:00

CAN system communication error (HS CAN)

DETECTION CONDITION

•  Under the following condition, a communication error (HS CAN) occurs:

―  Battery voltage is 10 V or more.

FAIL-SAFE FUNCTION

•  Inhibits learning control.

•  Inhibits neutral idle control.

•  Inhibits i-stop control.

•  Inhibits AAS.

POSSIBLE CAUSE

•  CAN bus communication line malfunction (HS CAN)

•  TCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0073:00	CAN system communication error (HS CAN)
DETECTION CONDITION	• Under the following condition, a communication error (HS CAN) occurs: ― Battery voltage is 10 V or more.
FAIL-SAFE FUNCTION	• Inhibits learning control. • Inhibits neutral idle control. • Inhibits i-stop control. • Inhibits AAS.
POSSIBLE CAUSE	• CAN bus communication line malfunction (HS CAN) • TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0100:00

Communication error to PCM (HS CAN)

DETECTION CONDITION

•  Under the following condition, the TCM cannot receive the signal from PCM (HS CAN):

―  Battery voltage is 10 V or more.

FAIL-SAFE FUNCTION

•  Inhibits learning control.

•  Inhibits neutral idle control.

•  Inhibits i-stop control.

•  Inhibits AAS.

POSSIBLE CAUSE

•  CAN communication line malfunction between PCM and TCM (HS CAN)

•  TCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0100:00	Communication error to PCM (HS CAN)
DETECTION CONDITION	• Under the following condition, the TCM cannot receive the signal from PCM (HS CAN): ― Battery voltage is 10 V or more.
FAIL-SAFE FUNCTION	• Inhibits learning control. • Inhibits neutral idle control. • Inhibits i-stop control. • Inhibits AAS.
POSSIBLE CAUSE	• CAN communication line malfunction between PCM and TCM (HS CAN) • TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0121:00

Communication error to DSC HU/CM

DETECTION CONDITION

•  Under the following condition, the TCM cannot receive the signal from DSC HU/CM:

―  Battery voltage is 10 V or more.

FAIL-SAFE FUNCTION

•  Inhibits learning control.

•  Inhibits neutral idle control.

•  Inhibits i-stop control.

•  Inhibits AAS.

POSSIBLE CAUSE

•  CAN communication line malfunction between TCM and DSC HU/CM

•  TCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0121:00	Communication error to DSC HU/CM
DETECTION CONDITION	• Under the following condition, the TCM cannot receive the signal from DSC HU/CM: ― Battery voltage is 10 V or more.
FAIL-SAFE FUNCTION	• Inhibits learning control. • Inhibits neutral idle control. • Inhibits i-stop control. • Inhibits AAS.
POSSIBLE CAUSE	• CAN communication line malfunction between TCM and DSC HU/CM • TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0131:00

Communication error to EPS control module

DETECTION CONDITION

•  Under the following condition, the TCM cannot receive the signal from EPS control module:

―  Battery voltage is 10 V or more.

FAIL-SAFE FUNCTION

•  Inhibits learning control.

•  Inhibits neutral idle control.

•  Inhibits i-stop control.

POSSIBLE CAUSE

•  CAN communication line malfunction between TCM and EPS control module

•  TCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0131:00	Communication error to EPS control module
DETECTION CONDITION	• Under the following condition, the TCM cannot receive the signal from EPS control module: ― Battery voltage is 10 V or more.
FAIL-SAFE FUNCTION	• Inhibits learning control. • Inhibits neutral idle control. • Inhibits i-stop control.
POSSIBLE CAUSE	• CAN communication line malfunction between TCM and EPS control module • TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0155:00

Communication error to instrument cluster

DETECTION CONDITION

•  Under the following condition, the TCM cannot receive the signal from instrument cluster:

―  Battery voltage is 10 V or more.

FAIL-SAFE FUNCTION

•  Inhibits learning control.

•  Inhibits manual mode.

•  Inhibits neutral idle control.

•  Inhibits i-stop control.

POSSIBLE CAUSE

•  CAN communication line malfunction between TCM and instrument cluster

•  TCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0155:00	Communication error to instrument cluster
DETECTION CONDITION	• Under the following condition, the TCM cannot receive the signal from instrument cluster: ― Battery voltage is 10 V or more.
FAIL-SAFE FUNCTION	• Inhibits learning control. • Inhibits manual mode. • Inhibits neutral idle control. • Inhibits i-stop control.
POSSIBLE CAUSE	• CAN communication line malfunction between TCM and instrument cluster • TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0214:00

Communication error to start stop unit

DETECTION CONDITION

•  Under the following condition, the TCM cannot receive the signal from start stop unit:

―  Battery voltage is 10 V or more.

FAIL-SAFE FUNCTION

•  Inhibits direct mode.

POSSIBLE CAUSE

•  CAN communication line malfunction between TCM and start stop unit

•  TCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0214:00	Communication error to start stop unit
DETECTION CONDITION	• Under the following condition, the TCM cannot receive the signal from start stop unit: ― Battery voltage is 10 V or more.
FAIL-SAFE FUNCTION	• Inhibits direct mode.
POSSIBLE CAUSE	• CAN communication line malfunction between TCM and start stop unit • TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

Diagnostic Procedure

• Inspect according to the diagnostic procedure in ON-BOARD DIAGNOSTIC [MULTIPLEX COMMUNICATION SYSTEM]. (See FOREWORD [SKYACTIV-D 1.5].)