P1790 · blink 65 – ST SOLENOID VALVE MALFUNCTION
- System
- ECT U340E
- Dashboard light
- Malfunction indicator lamp (Check Engine)
- Check-engine blink code
- 65
- Applies to
- 4-speed A/T U340E. PK: ZZE122R-GEPNKP 1.8 auto from 07.2005 (EPC fig 3501/3512 note (0507- )ATM..PKN); JDM NZE121 1NZ autos
- Description
- ST SOLENOID VALVE MALFUNCTION
- Detection / symptoms
- Detection: ECU memorizes DTC P1790/65 if (a) or (b) condition below is detected once or more, but ECU does not start O/D OFF indi- cator light blinking. (a) Solenoid resistance is 30 W or lower (short circuit) when solenoid energized. (b) Solenoid resistance is 100 kW or higher (open circuit) when solenoid is not energized.
- Possible causes
- Transmisstion wire; Wire harness; ST solenoid valve; Engine ECU
- What to check
- Workshop check order (RM821E): INSPECT TRANSMISSION WIRE(ST) -> CHECK WIRE HARNESS AND CONNECTOR(Transmission wire − ECU) -> INSPECT TRANSMISSION 3WAY SOLENOID ASSY NO.3(ST)
- Confidence
- high (official Toyota RM821E)
From the factory service material. Clear the code and test-drive to confirm it returns. Search all fault codes · Common problems · Warning lights