Dtc P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve Slu)
DESCRIPTION
MONITOR DESCRIPTION
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
COMPONENT OPERATING RANGE
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT TRANSMISSION WIRE (SLU)
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
INSPECT SHIFT SOLENOID VALVE SLU
DTC P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU) |
DESCRIPTION
Refer to the system description for DTC P2757 (Link).DTC No.
| DTC Detection Condition
| Trouble Area
|
P2759
| 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
|
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 turn on the MIL and stores the DTC.
MONITOR STRATEGY
Related DTCs
| P2759: Shift solenoid valve SLU/Range check
|
Required sensors/Components
| Shift solenoid valve SLU
|
Frequency of operation
| Continuous
|
Duration
| 1.0 second
|
MIL operation
| Immediate
|
Sequence of operation
| None
|
TYPICAL ENABLING CONDITIONS
The monitor runs whenever the following DTCs are not present.
| None
|
Solenoid current cut status
| Not cut
|
Battery voltage
| 11 V or more
|
Target duty cycle
| 19 % or more
|
Ignition switch
| ON
|
Starter
| OFF
|
TYPICAL MALFUNCTION THRESHOLDS
Solenoid status (SLU) from MIC
| Fail
|
COMPONENT OPERATING RANGE
Solenoid status (SLU)
| Resistance: 5.0 to 5.6 Ω at 20°C (68°F)
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- Perform the universal trip to clear permanent DTCs (COROLLA_ZRE142 RM000000W770S5X.html).
| 1.INSPECT TRANSMISSION WIRE (SLU) |
Disconnect the transmission wire connector from the transaxle.
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
|
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
| ↑
|
| 2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) |
Connect the transmission wire connector to the transaxle.
Disconnect the ECM connectors.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
B31-54 (SLU+) - B31-53 (SLU-)
| 20°C (68°F)
| 5.0 to 5.6 Ω
|
Measure the resistance according to the value(s) in the table below.
- Standard resistance (Check for short):
Tester Connection
| Condition
| Specified Condition
|
B31-54 (SLU+) - Body ground
| Always
| 10 kΩ or higher
|
B31-53 (SLU-) - Body ground
| Always
| ↑
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 3.INSPECT SHIFT SOLENOID VALVE SLU |
Remove the shift solenoid valve SLU.
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
|
Connect the positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve.
- OK:
- The solenoid makes an operating sound.
