RM3660EC _52 Drivetrain _080728 K313 CVT _0392261 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM C

K313 CVT  CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM  P074011  Torque Converter Clutch Circuit Short to Ground  


DESCRIPTION

Based on the signal received by the shift solenoid valve SL, the ECM uses the shift solenoid valve SLU to control the lock-up clutch pressure.

If there is an open or short in the shift solenoid valve SL circuit, the ECM stops sending current to the malfunctioning shift solenoid valve.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P074011 Torque Converter Clutch Circuit Short to Ground When the shift solenoid valve SL is operated, a short is detected in the shift solenoid valve SL circuit (1-trip detection logic).
·

Wire harness or connector

·

Transmission valve body assembly (Shift solenoid valve SL)

·

Transmission wire

·

ECM


Comes on DTC stored SAE Code:
P2769

MONITOR DESCRIPTION

This DTC indicates a short to ground in the shift solenoid valve SL circuit. If there is a short to ground in the shift solenoid valve SL circuit, the ECM detects the malfunction, illuminates the MIL and stores a DTC.

CONFIRMATION DRIVING PATTERN

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.


HINT:
·

After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

·

When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.

Click hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>DTC CHECK / CLEAR



1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON and turn the GTS on.

3.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4.

Turn the ignition switch off and wait for 2 minutes or more.

5.

Turn the ignition switch to ON and turn the GTS on.

6.

Start the engine.

7.

Drive the vehicle and confirm the lock-up on and off conditions according to Road Test. [*1]

Click hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>ROAD TEST

HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.


8.

Stop the vehicle.

9.

Enter the following menus: Powertrain / Transmission / Utility / All Readiness.

10.

Input the DTC: P074011.

11.

Check the DTC judgment result.

GTS Display Description
NORMAL
·

DTC judgment completed

·

System normal


ABNORMAL
·

DTC judgment completed

·

System abnormal


INCOMPLETE
·

DTC judgment not completed

·

Perform driving pattern after confirming DTC enabling conditions


N/A
·

Unable to perform DTC judgment

·

Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit



HINT:
·

If the judgment result shows NORMAL, the system is normal.

·

If the judgment result shows ABNORMAL, the system has a malfunction.

·

If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.




WIRING DIAGRAM

C359199E03
5.99,2.906 6.448,3.104 0.458,0.198 10 false C78 5.99,3.063 6.448,3.26 0.458,0.198 10 false ECM 5.625,1.854 6.083,2.052 0.458,0.198 10 false E1 5.604,0.896 6.063,1.094 0.458,0.198 10 false SL 5.344,0.896 5.802,1.094 0.458,0.198 10 false 75 5.354,1.75 5.813,1.948 0.458,0.198 10 false 53 4.75,0.885 5.208,1.083 0.458,0.198 10 false 3 4.406,0.885 4.865,1.083 0.458,0.198 10 false SL 2.781,0.906 3.24,1.104 0.458,0.198 10 false 1 1.115,1.281 1.99,1.708 0.875,0.427 10 false Shift Solenoid Valve SL 0.5,2.073 4.021,2.271 3.521,0.198 10 false Transmission Valve Body Assembly 3.167,1.594 4.635,1.875 1.469,0.281 10 false Transmission Wire 1.177,2.542 4.698,2.74 3.521,0.198 10 false Continuously Variable Transaxle Assembly 3.167,1.417 4.635,1.698 1.469,0.281 10 false C60 6.219,0.625 6.833,0.823 0.615,0.198 10 false 12 V

CAUTION / NOTICE / HINT

NOTICE:
·

Perform the universal trip to clear permanent DTCs.

Click hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>DTC CHECK / CLEAR

·

Perform initialization when parts related to the continuously variable transaxle system are replaced.

Click hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION

·

Check that no DTCs are stored after performing initialization.

Click hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>DTC CHECK / CLEAR



PROCEDURE

1.INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SL)
a.
C264597C09
2.063,0.885 2.365,0.406 2.365,0.406 2.521,0.406 true 0.198,0.219 0.51,0.417 0.313,0.198 10 *a 2.573,0.344 2.813,0.51 0.24,0.167 10 SL
*a Component without harness connected
(Transmission Wire)


Disconnect the C60 transmission wire connector.


b.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
3 (SL) - Body ground 20°C (68°F) 11 to 15 Ω



c.

Connect the C60 transmission wire connector.


Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

NG

4.INSPECT TRANSMISSION WIRE
2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
a.

Disconnect the C78 ECM connector.


b.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
C78-75 (SL) - Body ground 20°C (68°F) 11 to 15 Ω



c.

Connect the C78 ECM connector.


Result:
Proceed to
OK
NG



OK

3.REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)

4.INSPECT TRANSMISSION WIRE
a.

Remove the transmission wire.

Click hereDrivetrain>K313 (CVT)>TRANSMISSION WIRE>REMOVAL

C305463C01
0.885,1.656 1,1.906 1,1.906 1.25,1.906 true 5.219,1.542 5.74,1.542 true 6.167,3.385 6.354,2.875 6.354,2.875 6.604,2.875 true 0.99,0.448 1.302,0.604 0.313,0.156 10 false *1 0.729,1.51 1.042,1.667 0.313,0.156 10 false *2 5.208,0.51 5.521,0.667 0.313,0.156 10 false *3 5.76,0.885 6.073,1.042 0.313,0.156 10 false *a 5.865,2.677 6.177,2.833 0.313,0.156 10 false *b 5.125,1.458 5.281,1.656 0.156,0.198 10 false 1 6.635,2.802 6.948,3 0.313,0.198 10 false SL
*1 Transmission Valve Body Assembly *2 Shift Solenoid Valve SL
*3 Transmission Wire - -
*a Shift Solenoid Valve Side *b Wire Harness Connector Side



b.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
1 (shift solenoid valve side) or 3 (SL) (wire harness connector side) - All other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

5.REPLACE TRANSMISSION VALVE BODY ASSEMBLY

NG

REPLACE TRANSMISSION WIRE

Click hereDrivetrain>K313 (CVT)>TRANSMISSION WIRE>COMPONENTS


5.REPLACE TRANSMISSION VALVE BODY ASSEMBLY
a.

Replace the transmission valve body assembly.

Click hereDrivetrain>K313 (CVT)>VALVE BODY ASSEMBLY>COMPONENTS


Result:
Proceed to
NEXT



NEXT

PERFORM INITIALIZATION

Click hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION