DTC P0740-15: Torque Converter Clutch Circuit Short to Battery or Open [04/2018 -]: Procedure
WARNING: This page is about a different car, the 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT TRANSMISSION WIRE (SOLENOID (SL) VALVE)
- Disconnect the C52 transmission wire connector.
*a Component without harness connected
(Transmission Wire) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition 13 (SL) - Body ground 20°C (68°F) 11 to 15 Ω 13 (SL) - Other terminals Always 10 kΩ or higher - Connect the C52 transmission wire connector.
Result
Proceed to OK NG
Result:
NG
See step 4
Result:
OK
See step 2
- Disconnect the C52 transmission wire connector.
- CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
- Disconnect the C56 ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition C56-62 (SL) - Body ground 20°C (68°F) 11 to 15 Ω C56-62 (SL) - Other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)
Result:
OK
See step 3
- REPLACE ECM
- Replace the ECM.
Refer to COMPONENTS [04/2018 -]
Result
Proceed to NEXT
Result:
NEXT
PERFORM REGISTRATION. Refer to REGISTRATION [04/2018 -]
- Replace the ECM.
- INSPECT SOLENOID (SL) VALVE
- Remove the solenoid (SL) valve.
*1 Solenoid (SL) Valve Refer to DISASSEMBLY [04/2018 -]
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Solenoid (SL) valve connector terminal - Solenoid (SL) valve body 20°C (68°F) 11 to 15 Ω - Connect a positive (+) lead from the battery to the terminal of the solenoid valve connector, and a negative (-) lead to the solenoid body. Check that the valve moves and makes an operating sound.
OK
Valve moves and makes an operating sound.
Result
Proceed to OK NG
Result:
OK
REPAIR OR REPLACE TRANSMISSION WIRE. Refer to COMPONENTS [04/2018 -]
Result:
NG
REPLACE SOLENOID (SL) VALVE. Refer to COMPONENTS [04/2018 -]
- Remove the solenoid (SL) valve.