DTC P0743:00 [FW6A-EL]

id050225822200

DTC P0743:00

TCC control solenoid circuit malfunction
DETECTION CONDITION
•  Under the following condition, the TCM detects the TCC control solenoid circuit malfunction:
―  Battery voltage is 10.5 V or more.
FAIL-SAFE FUNCTION
•  Set to emergency mode.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
POSSIBLE CAUSE
•  Short or open circuit in TCC control solenoid circuit
•  TCC control solenoid malfunction
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic procedure

STEP

INSPECTION

ACTION
1
RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture of the PC function.
•  Record the freeze frame data/snap shot data.
—
Go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, replace the control valve body.
Go to the next step.
No
Replace the control valve body, then go to the next step.
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6A-EL].)
3
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Clear the DTC using the M-MDS.
•  Perform the following procedure to ensure that the DTC has been resolved:
1.  Switch the ignition ON (engine off or on).
•  Perform the DTC inspection using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL].)
No
DTC troubleshooting completed.