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

DTC U0073:00	CAN system communication error (HS CAN)
DETECTION CONDITION	• If there is a malfunction in CAN bus communication line. Diagnostic support note • This is a continuous monitor (other). • The MIL does not illuminate. • FREEZE FRAME DATA (Mode 2)/Snapshot data is not available. • The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Inhibits the i-stop control and illuminates the i-stop warning light (amber).(PCM sends flash request to instrument cluster, however, i-stop warning light (amber) is illuminated by instrument cluster operation because flash request cannot be received on instrument cluster side)
POSSIBLE CAUSE	• CAN bus communication line malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	—

DTC U0073:00

CAN system communication error (HS CAN)

DETECTION CONDITION

• If there is a malfunction in CAN bus communication line.

Diagnostic support note

• This is a continuous monitor (other).

• The MIL does not illuminate.

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

• The DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

• Inhibits the i-stop control and illuminates the i-stop warning light (amber).(PCM sends flash request to instrument cluster, however, i-stop warning light (amber) is illuminated by instrument cluster operation because flash request cannot be received on instrument cluster side)

POSSIBLE CAUSE

• CAN bus communication line malfunction

• PCM malfunction

SYSTEM WIRING DIAGRAM

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DTC U0101:00	CAN communication: communication error to TCM
DETECTION CONDITION	• When a communication error between the TCM continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • The 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).
POSSIBLE CAUSE	Note • During malfunction diagnosis, first verify the malfunction detection of DTC U0074:00 or U0115:00 for the TCM. • CAN communication line between PCM and TCM malfunction • TCM malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	—

DTC U0101:00

CAN communication: communication error to TCM

DETECTION CONDITION

• When a communication error between the TCM continues for 5 s or more.

Diagnostic support note

• This is a continuous monitor (other).

• The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.

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

• The 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).

POSSIBLE CAUSE

Note

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

• CAN communication line between PCM and TCM malfunction

• TCM malfunction

• PCM malfunction

SYSTEM WIRING DIAGRAM

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DTC U0121:00	CAN communication: communication error to DSC HU/CM
DETECTION CONDITION	• When a communication error between the DSC HU/CM continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • The 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).
POSSIBLE CAUSE	• CAN communication line between PCM and DSC HU/CM malfunction • DSC HU/CM malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	—

DTC U0121:00

CAN communication: communication error to DSC HU/CM

DETECTION CONDITION

• When a communication error between the DSC HU/CM continues for 5 s or more.

Diagnostic support note

• This is a continuous monitor (other).

• The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.

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

• The 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).

POSSIBLE CAUSE

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

• DSC HU/CM malfunction

• PCM malfunction

SYSTEM WIRING DIAGRAM

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

DTC U0131:00

CAN communication: communication error to EHPAS control module

DETECTION CONDITION

• When a communication error between the EHPAS control module continues for 5 s or more.

Diagnostic support note

• This is a continuous monitor (other).

• The MIL does not illuminate.

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

• The DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

• Inhibits the i-stop control and flashes the i-stop warning light (amber).

POSSIBLE CAUSE

• CAN communication line between PCM and EHPAS control module malfunction

• EHPAS control module malfunction

• PCM malfunction

SYSTEM WIRING DIAGRAM

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DTC U0140:00	CAN communication: communication error to BCM
DETECTION CONDITION	• When a communication error between the BCM continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The MIL does not illuminate. • FREEZE FRAME DATA (Mode 2) is not available/Snapshot data is available. • The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Inhibits the i-stop control and flashes the i-stop warning light (amber).
POSSIBLE CAUSE	• CAN communication line between PCM and BCM malfunction • BCM malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	—

DTC U0140:00

CAN communication: communication error to BCM

DETECTION CONDITION

• When a communication error between the BCM continues for 5 s or more.

Diagnostic support note

• This is a continuous monitor (other).

• The MIL does not illuminate.

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

• The DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

• Inhibits the i-stop control and flashes the i-stop warning light (amber).

POSSIBLE CAUSE

• CAN communication line between PCM and BCM malfunction

• BCM malfunction

• PCM malfunction

SYSTEM WIRING DIAGRAM

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

DTC U0151:00

CAN communication: communication error to SAS control module

DETECTION CONDITION

• When a communication error between the SAS control module continues for 5 s or more.

Diagnostic support note

• This is a continuous monitor (other).

• The MIL does not illuminate.

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

• The DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

• Inhibits the i-stop control and flashes the i-stop warning light (amber).

POSSIBLE CAUSE

• CAN communication line between PCM and SAS control module malfunction

• SAS control module malfunction

• PCM malfunction

SYSTEM WIRING DIAGRAM

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DTC U0155:00	CAN communication: communication error to instrument cluster
DETECTION CONDITION	• When a communication error between the instrument cluster continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Inhibits the i-stop control and flashes the i-stop warning light (amber).
POSSIBLE CAUSE	• CAN communication line between PCM and instrument cluster malfunction • Instrument cluster malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	—

DTC U0155:00

CAN communication: communication error to instrument cluster

DETECTION CONDITION

• When a communication error between the instrument cluster continues for 5 s or more.

Diagnostic support note

• This is a continuous monitor (other).

• The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.

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

• The DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

• Inhibits the i-stop control and flashes the i-stop warning light (amber).

POSSIBLE CAUSE

• CAN communication line between PCM and instrument cluster malfunction

• Instrument cluster malfunction

• PCM malfunction

SYSTEM WIRING DIAGRAM

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DTC U0214:00	CAN communication: communication error to keyless control module
DETECTION CONDITION	• When a communication error between the keyless control module continues for 5 s or more. Diagnostic support note • This is a continuous monitor (other). • The MIL does not illuminate. • FREEZE FRAME DATA (Mode 2) is not available/Snapshot data is available. • The 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 between PCM and keyless control module malfunction • Keyless control module malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	—

DTC U0214:00

CAN communication: communication error to keyless control module

DETECTION CONDITION

• When a communication error between the keyless control module continues for 5 s or more.

Diagnostic support note

• This is a continuous monitor (other).

• The MIL does not illuminate.

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

• The 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 between PCM and keyless control module malfunction

• Keyless control module malfunction

• PCM malfunction

SYSTEM WIRING DIAGRAM

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