DTC U0073:00, U0100:00, U0121:00, U0141:00, U0155:00 [FW6A-EL]

id050225905500

DTC U0073:00	CAN system communication error (HS CAN)
DETECTION CONDITION	•  Under the following conditions, a communication error (HS CAN) occurs: ―  Battery voltage is 10 V or more. Diagnostic support note •  The MIL does not illuminate. •  The AT warning light does not illuminate. •  PENDING CODE is available. •  FREEZE FRAME DATA is not available. •  The DTC is stored in the TCM memory.
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	—

DTC U0100:00	Communication error to PCM (HS CAN)
DETECTION CONDITION	•  Under the following conditions, the TCM cannot receive the signal from PCM (HS CAN): ―  Battery voltage is 10 V or more. Diagnostic support note •  The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle. •  The AT warning light does not illuminate. •  PENDING CODE is available. •  FREEZE FRAME DATA is available. •  The DTC is stored in the TCM memory.
FAIL-SAFE FUNCTION	•  Inhibits learning control. •  Inhibits neutral idle control. •  Inhibits i-stop control. •  Inhibits AAS.
POSSIBLE CAUSE	•  CAN communication line between PCM and TCM malfunction (HS CAN) •  TCM malfunction
SYSTEM WIRING DIAGRAM	—

DTC U0121:00	Communication error to DSC HU/CM
DETECTION CONDITION	•  Under the following conditions, the TCM cannot receive the signal from DSC HU/CM: ―  Battery voltage is 10 V or more. Diagnostic support note •  The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle. •  The AT warning light does not illuminate. •  PENDING CODE is available. •  FREEZE FRAME DATA is available. •  The DTC is stored in the TCM memory.
FAIL-SAFE FUNCTION	•  Inhibits learning control. •  Inhibits neutral idle control. •  Inhibits i-stop control. •  Inhibits AAS.
POSSIBLE CAUSE	•  CAN communication line between TCM and DSC HU/CM malfunction •  TCM malfunction
SYSTEM WIRING DIAGRAM	—

DTC U0141:00	Communication error to BCM
DETECTION CONDITION	•  Under the following conditions, the TCM cannot receive the signal from BCM: ―  Battery voltage is 10 V or more. Diagnostic support note •  The MIL does not illuminate. •  The AT warning light does not illuminate. •  PENDING CODE is available. •  FREEZE FRAME DATA is not available. •  The DTC is stored in the TCM memory.
FAIL-SAFE FUNCTION	•  Inhibits learning control. •  Inhibits neutral idle control. •  Inhibits i-stop control.
POSSIBLE CAUSE	•  CAN communication line between TCM and BCM malfunction •  TCM malfunction
SYSTEM WIRING DIAGRAM	—

DTC U0155:00	Communication error to instrument cluster
DETECTION CONDITION	•  Under the following conditions, the TCM cannot receive the signal from instrument cluster: ―  Battery voltage is 10 V or more. Diagnostic support note •  The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle. •  The AT warning light does not illuminate. •  PENDING CODE is available. •  FREEZE FRAME DATA is available. •  The DTC is stored in the TCM memory.
FAIL-SAFE FUNCTION	•  Inhibits learning control. •  Inhibits manual mode. •  Inhibits neutral idle control. •  Inhibits i-stop control.
POSSIBLE CAUSE	•  CAN communication line between TCM and instrument cluster malfunction •  TCM malfunction
SYSTEM WIRING DIAGRAM	—

Diagnostic Procedure