DTC U0073:00, U0101:00, U0104:00, U0121:00, U0131:00, U0140:00, U0151:00, U0155:00, U0214:00, U0235:00 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5]

id0102h9911000

DTC U0073:00

CAN system communication error (HS CAN)

DETECTION CONDITION

•  Malfunction in CAN bus communication line.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA (Mode 2) is not available.

•  Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

•  CAN bus communication line malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0073:00	CAN system communication error (HS CAN)
DETECTION CONDITION	• Malfunction in CAN bus communication line. Diagnostic support note • This is a continuous monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA (Mode 2) is not available. • Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	• CAN bus communication line malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0101:00

CAN communication: communication error to TCM

DETECTION CONDITION

•  Communication error between the PCM and TCM continues for 5 s or more.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.

•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Controls the turbine rotation signal at 0.

•  Inhibits the AT torque reduction request.

•  Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).

POSSIBLE CAUSE

Note

•  During malfunction diagnosis, first verify the malfunction detection of DTC U0074:00 or U0115:00 for the TCM.

•  CAN communication line malfunction between PCM and TCM

•  TCM malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0101:00	CAN communication: communication error to TCM
DETECTION CONDITION	• Communication error between the PCM and TCM continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Controls the turbine rotation signal at 0. • Inhibits the AT torque reduction request. • Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).
POSSIBLE CAUSE	Note • During malfunction diagnosis, first verify the malfunction detection of DTC U0074:00 or U0115:00 for the TCM. • CAN communication line malfunction between PCM and TCM • TCM malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0104:00

CAN communication: communication error to vehicle control module (V/C-module)

DETECTION CONDITION

•  Communication error between the PCM and vehicle control module (V/C-module) continues for 5 s or more.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA (Mode 2) is not available.

•  Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  The vehicle control module (V/C-module) function is cancelled.

POSSIBLE CAUSE

•  CAN communication line malfunction between PCM and vehicle control module (V/C-module)

•  Vehicle control module (V/C-module) malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0104:00	CAN communication: communication error to vehicle control module (V/C-module)
DETECTION CONDITION	• Communication error between the PCM and vehicle control module (V/C-module) continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA (Mode 2) is not available. • Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• The vehicle control module (V/C-module) function is cancelled.
POSSIBLE CAUSE	• CAN communication line malfunction between PCM and vehicle control module (V/C-module) • Vehicle control module (V/C-module) malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0121:00

CAN communication: communication error to DSC HU/CM

DETECTION CONDITION

•  Communication error between the PCM and DSC HU/CM continues for 5 s or more.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.

•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Inhibits the DSC control.

•  Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).

POSSIBLE CAUSE

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

•  DSC HU/CM malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0121:00	CAN communication: communication error to DSC HU/CM
DETECTION CONDITION	• Communication error between the PCM and DSC HU/CM continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Inhibits the DSC control. • Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).
POSSIBLE CAUSE	• CAN communication line malfunction between PCM and DSC HU/CM • DSC HU/CM malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0131:00

CAN communication: communication error to EPS control module

DETECTION CONDITION

•  Communication error between the PCM and EPS control module continues for 5 s or more.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA (Mode 2) is not available.

•  Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).

POSSIBLE CAUSE

•  CAN communication line malfunction between PCM and EPS control module

•  EPS control module malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0131:00	CAN communication: communication error to EPS control module
DETECTION CONDITION	• Communication error between the PCM and EPS control module continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA (Mode 2) is not available. • Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).
POSSIBLE CAUSE	• CAN communication line malfunction between PCM and EPS control module • EPS control module malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0140:00

CAN communication: communication error to front body control module (FBCM)

DETECTION CONDITION

•  Communication error between the PCM and front body control module (FBCM) continues for 5 s or more.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA (Mode 2) is not available.

•  Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).

POSSIBLE CAUSE

•  CAN communication line malfunction between PCM and front body control module (FBCM)

•  Front body control module (FBCM) malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0140:00	CAN communication: communication error to front body control module (FBCM)
DETECTION CONDITION	• Communication error between the PCM and front body control module (FBCM) continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA (Mode 2) is not available. • Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).
POSSIBLE CAUSE	• CAN communication line malfunction between PCM and front body control module (FBCM) • Front body control module (FBCM) malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0151:00

CAN communication: communication error to SAS control module

DETECTION CONDITION

•  Communication error between the PCM and SAS control module continues for 5 s or more.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA (Mode 2) is not available.

•  Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).

POSSIBLE CAUSE

•  CAN communication line malfunction between PCM and SAS control module

•  SAS control module malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0151:00	CAN communication: communication error to SAS control module
DETECTION CONDITION	• Communication error between the PCM and SAS control module continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA (Mode 2) is not available. • Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).
POSSIBLE CAUSE	• CAN communication line malfunction between PCM and SAS control module • SAS control module malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0155:00

CAN communication: communication error to instrument cluster

DETECTION CONDITION

•  Communication error between the PCM and instrument cluster continues for 5 s or more.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA (Mode 2) is not available.

•  Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).

POSSIBLE CAUSE

•  CAN communication line malfunction between PCM and instrument cluster

•  Instrument cluster malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0155:00	CAN communication: communication error to instrument cluster
DETECTION CONDITION	• Communication error between the PCM and instrument cluster continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA (Mode 2) is not available. • Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).
POSSIBLE CAUSE	• CAN communication line malfunction between PCM and instrument cluster • Instrument cluster malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0214:00

CAN communication: communication error to start stop unit

DETECTION CONDITION

•  Communication error between the PCM and start stop unit continues for 5 s or more.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA (Mode 2) is not available.

•  Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).

POSSIBLE CAUSE

•  CAN communication line malfunction between PCM and start stop unit

•  Start stop unit malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0214:00	CAN communication: communication error to start stop unit
DETECTION CONDITION	• Communication error between the PCM and start stop unit continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA (Mode 2) is not available. • Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Inhibits the i-stop control and flashes the i-stop warning light (amber) (engine stalls while engine is stopped by i-stop control).
POSSIBLE CAUSE	• CAN communication line malfunction between PCM and start stop unit • Start stop unit malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC U0235:00

CAN communication: communication error to laser sensor

DETECTION CONDITION

•  Communication error between the PCM and laser sensor continues for 5 s or more.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA (Mode 2) is not available.

•  Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  The smart city brake support function is cancelled.

POSSIBLE CAUSE

•  CAN communication line malfunction between PCM and laser sensor

•  Laser sensor malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC U0235:00	CAN communication: communication error to laser sensor
DETECTION CONDITION	• Communication error between the PCM and laser sensor continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA (Mode 2) is not available. • Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• The smart city brake support function is cancelled.
POSSIBLE CAUSE	• CAN communication line malfunction between PCM and laser sensor • Laser sensor malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

Diagnostic Procedure

• Inspect according to the diagnostic procedure in ON-BOARD DIAGNOSTIC [MULTIPLEX COMMUNICATION SYSTEM]. (See FOREWORD [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5, SKYACTIV-D 2.2 (MTX)].)