U340E AUTOMATIC TRANSMISSION / TRANSAXLE  AUTOMATIC TRANSAXLE SYSTEM  P2759  Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU)  


DESCRIPTION

The ECM uses the signals from the throttle position sensor, transmission revolution sensor, vehicle speed sensor and crankshaft position sensor to the monitor the engagement condition of the lock-up clutch.

C233511E03
4.719,0.177 5,0.698 false 4.333,1.198 4.75,0.896 false 5.969,0.469 5.375,1.406 5.375,1.406 5.979,0.938 false 0.49,0.542 1.125,1.073 0.635,0.531 10 false Lock-up Operation Pressure 1.948,1.563 3.927,1.729 1.979,0.167 10 false Current Flow to Solenoid 3.948,0.094 4.708,0.25 0.76,0.156 10 false Spool Valve 3.885,1.115 4.354,1.281 0.469,0.167 10 false Sleeve 4.969,1.406 5.823,1.552 0.854,0.146 10 false Solenoid Coil

The ECM compares the engagement condition of the lock-up clutch with the lock-up schedule in the ECM memory to detect mechanical problems of the shift solenoid valve SLU, valve body and torque converter assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU) Open or short is detected in shift solenoid valve SLU circuit for 1 second or more while driving (1-trip detection logic)
·

Open or short in shift solenoid valve SLU circuit

·

Shift solenoid valve SLU

·

ECM


Comes on DTC stored

MONITOR DESCRIPTION

When an open or short in the shift solenoid valve SLU circuit is detected, the ECM interprets this as a fault. The ECM will illuminate the MIL and store this DTC.

WIRING DIAGRAM

C155865E37
0.594,2.646 1.104,2.823 0.51,0.177 10 false B55 0.594,2.802 2.469,3.135 1.875,0.333 10 false Transmission Wire 2.208,1.25 2.583,1.417 0.375,0.167 10 false SLU+ 5.844,1.25 6.208,1.417 0.365,0.167 10 false SLU+ 2.667,1.25 2.792,1.417 0.125,0.167 10 false 4 2.667,2.229 2.792,2.396 0.125,0.167 10 false 9 2.208,2.229 2.573,2.396 0.365,0.167 10 false SLU- 5.854,2.01 6.219,2.177 0.365,0.167 10 false SLU- 6.031,2.677 6.396,2.844 0.365,0.167 10 false ECM 5.49,1.156 5.771,1.302 0.281,0.146 10 false B56 5.5,2.156 5.771,2.375 0.271,0.219 10 false B56 6,0.833 6.344,1.115 0.344,0.281 10 false +B 5.552,1.948 5.854,2.094 0.302,0.146 10 false 60 5.552,0.948 5.927,1.094 0.375,0.146 10 false 61

CAUTION / NOTICE / HINT

NOTICE:

Perform initialization when parts related to the automatic transaxle are replaced.

Click hereDrivetrain>U340E AUTOMATIC TRANSMISSION / TRANSAXLE>AUTOMATIC TRANSAXLE SYSTEM>PRECAUTION


PROCEDURE

1.INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU)
a.
C155864C30
0.75,2.583 1.333,2.042 false 0.75,1.167 1.333,1.667 false 0.292,0.302 0.604,0.458 0.313,0.156 10 false *a 0.354,1 0.917,1.24 0.563,0.24 10 false SLU+ 0.438,2.594 1,2.833 0.563,0.24 10 false SLU-
*a Component without harness connected
(Transmission Wire)


Disconnect the transmission wire connector from the transaxle.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
4 (SLU+) - 9 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω



c.

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

Standard Resistance (Check for short):
Tester Connection Condition Specified Condition
4 (SLU+) - Body ground Always 10 kΩ or higher
9 (SLU-) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

3.INSPECT SHIFT SOLENOID VALVE SLU
2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
a.

Connect the transmission wire connector to the transaxle.


b.
C185703C02
1.531,0.708 1.917,0.958 0.385,0.25 1.323,2.74 1.656,1.729 false 2,2.74 1.74,1.729 false 0.188,0.198 0.49,0.396 0.302,0.198 10 false *a 1.604,0.74 1.917,0.958 0.313,0.219 10 false B56 1.146,2.781 1.604,2.969 0.458,0.188 10 false SLU- 1.844,2.781 2.302,2.969 0.458,0.188 10 false SLU+
*a Front view of wire harness connector
(to ECM)


Disconnect the ECM connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
B56-61 (SLU+) - B56-60 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω



d.

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

Standard Resistance (Check for short):
Tester Connection Condition Specified Condition
B56-61 (SLU+) - Body ground Always 10 kΩ or higher
B56-60 (SLU-) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>1ZR-FE ENGINE CONTROL>ECM>COMPONENTS


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.INSPECT SHIFT SOLENOID VALVE SLU
a.
C155176C06
1,0.667 1.438,1.146 false 1,2.667 1.427,3.146 false 2.167,0.667 1.75,1.167 false 2.167,2.667 1.75,3.146 false 0.125,0.083 0.552,0.365 0.427,0.281 10 false *1 0.865,0.458 1.292,0.74 0.427,0.281 10 false 1 2.24,0.469 2.667,0.75 0.427,0.281 10 false 2 0.865,2.458 1.292,2.74 0.427,0.281 10 false 1 2.25,2.458 2.677,2.74 0.427,0.281 10 false 2 1.323,3.667 1.75,3.948 0.427,0.281 10 false (-) 2.083,3.677 2.51,3.958 0.427,0.281 10 false (+)
*1 Shift Solenoid Valve SLU


Remove the shift solenoid valve SLU.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
1 - 2 20°C (68°F) 5.0 to 5.6 Ω



c.

Connect a battery positive (+) lead with a 21 W bulb to terminal 2 and a negative (-) lead to terminal 1 of the solenoid valve connector, then check that the valve moves and makes an operating sound.

OK:

Valve moves and makes an operating sound.



Result:
Proceed to
OK
NG



OK

REPAIR OR REPLACE TRANSMISSION WIRE

Click hereDrivetrain>U340E AUTOMATIC TRANSMISSION / TRANSAXLE>TRANSMISSION WIRE>COMPONENTS


NG

REPLACE SHIFT SOLENOID VALVE SLU

Click hereDrivetrain>U340E AUTOMATIC TRANSMISSION / TRANSAXLE>VALVE BODY ASSEMBLY>COMPONENTS