DTC P0745-12: Pressure Control Solenoid "A" Circuit Short to Battery [08/2020 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus ES 250, 2023 Lexus ES 250, 2022 Lexus ES 250, and 2021 Lexus ES 250. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND TRANSMISSION WIRE (TRANSMISSION WIRE (SOLENOID (SL1) VALVE) - ECM)
- Disconnect the C78 ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition C78-8 (SL1+) or C78-7 (SL1-) - Other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
NG
See step 3
Result:
OK
See step 2
- REPLACE ECM
- Replace the ECM.
Refer to COMPONENTS [08/2020 - 08/2021] , or refer to COMPONENTS [08/2021 - ]
Result
Proceed to NEXT
Result:
NEXT
PERFORM REGISTRATION. Refer to REGISTRATION [08/2020 - ]
- Replace the ECM.
- CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
- Disconnect the C30 transmission wire connector.
- Disconnect the C78 ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition C30-17 (SL1+) or C78-8 (SL1+) - Other terminals Always 10 kΩ or higher C30-16 (SL1-) or C78-7 (SL1-) - 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 4
- INSPECT SOLENOID (SL1) VALVE
- Remove the solenoid (SL1) valve.
*a Component without harness connected
(Solenoid (SL1) Valve)Refer to DISASSEMBLY [08/2020 - ]
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Solenoid (SL1) valve connector terminal 1 - terminal 2 20°C (68°F) 5.0 to 5.6 Ω - Connect a positive (+) lead from the battery with a 21 W bulb to terminal 1 and a negative (-) lead to terminal 2 of the solenoid valve connector. 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 [08/2020 - 08/2021] , or refer to COMPONENTS [08/2021 - ]
Result:
NG
REPLACE SOLENOID (SL1) VALVE. Refer to COMPONENTS [08/2020 - ]
- Remove the solenoid (SL1) valve.