3.
Monitor DTC(Diagnostics Trouble Code) on the scantool.
Many control units is applied to the vehicle due to vehicle to be electronic control type and these perform many controls by receiving signals from sensors. So the common use of each sensors and the need of comunizing informations became a prominent figure. CAN comunication method is used at power train (ABS, trnasmission, engine, ECS etc) control of vehicle because it withstands eletronical external noise by spark and can high-speed comunication. Though CAN communication, ECM and TCM hold engin RPM, APS, step of trensmission, decreasing of torque in common and perform the active control.
This code is set, if ITM-ECU detects invailid engine information like engine displacement, torque.
If failure is detected TCCU prohibits the ITM control and cuts the current to control coil.
Item | Detecting Condition | Possible Cause |
DTC Strategy | ● Invalid Engine size received | ● Invalid Engine size received |
Enable Conditions | ● Message present 1.0 sec self clearing | |
Threshold Value | ● Invalid engine size received for greater than 1 second, and a fault will be set | |
Diagnostic Time | ● 1 sec | |
MIL on condition | ● 0.5 Sec | |
Fail Safe | ● Engine size set to zero, ECU will not send current to the clutch coil |
Connect scantool to Data Link Connector(DLC).
Warm up the engine to normal operating temperature.
Monitor DTC(Diagnostics Trouble Code) on the scantool.
Is the same DTC displayed again?
▶ Check engine information.
▶ Repair or replace as necessary and go to "Verification of vehicle Repair" procedure.
▶ Fault is intermittent caused by poor contact in the sensor’s and/or TCCU’s connector or was repaired and TCCU memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace asnecessary and go to "Verification of vehicle Repair" procedure.
Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode.
Using scantool, Clear DTC.
Operate the vehicle within DTC Enable conditions in General information.
Are any DTCs present ?
▶ Go to the applicable troubleshooting procedure.
▶ System is performing to specification at this time.
