P1770

DTC P1770 Plate And Oil Temp Thresholds Exceeded(LOCK MODE)

Component Location:

Component Description:

General Description
Vehicle uses 2WD(2 wheel drive) for driving at normal speed, but sometimes it uses 4WD (4 wheel drive) according to driving condition. (cornering or acceleration) EMC (Electric Magnetic Clutch) distributes proper torque to front wheel by controling amount of current inside EMC coil. That time power pressing the multi plate clutch by apply cam is changed by a rate of EMC duty. after multi plate clutch start slip the force for acceleration at front/rear wheel is controlled at a range of 100:0 ~ 50 : 50. ITM system has 4WD-LOCK function that can make driving force to 50:50 by compulsion according to driver's intention.

DTC Description
When the failure is set there is no signal in the warning lamp, just ITM-ECU sets and stores this code. If the ITM-ECU decides that the clutch (EMC) and oil are over-heated (above specified value) for more than 1s. When the failure is set there is no signal in the warning lamp, just ITM-ECU sets and stores this code.

DTC Detecting Condition:

Schematic Diagram:

Monitor DTC Status
1. Connect scantool to Data Link Connector(DLC).
2. Warm up the engine to normal operating temperature.





3. Monitor DTC (Diagnostics Trouble Code) on the scantool.
4. Is the same DTC displayed again?

YES
1) Check EMC, switch (4WD LOCK) condition.
2) Repair or replace as necessary and go to "Verification of vehicle Repair" procedure below.

NO
1) 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 as necessary and go to "Verification of vehicle Repair" procedure below.

Verification of Vehicle Repair
After a repair, it is essential to verifying that the fault has been corrected.
. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode.
2. Using scantool, Clear DTC.
3. Operate the vehicle within DTC Enable conditions in General information.
4. Are any DTCs present?

YES
1) Go to the applicable troubleshooting procedure.

NO
1) System is performing to specification at this time.