CorollaFix

P1760 · blink 77 – LINEAR SOLENOID FOR ACCUMULATOR PRESSURE CONTROL MALFUNCTION (SLT)

System
ECT U340E
Dashboard light
Malfunction indicator lamp (Check Engine)
Check-engine blink code
77
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
LINEAR SOLENOID FOR ACCUMULATOR PRESSURE CONTROL MALFUNCTION (SLT)
Detection / symptoms
Detection: (a) or (b) condition below is detected for 1 second or more. (a) SLT− terminal: 0V (b) SLT− terminal: 12V
Possible causes
Open or short in SLT solenoid valve circuit; SLT solenoid valve; Engine ECU
What to check
Workshop check order (RM821E): CHECK TRANSMISSION WIRE(SLT) -> CHECK WIRE HARNESS AND CONNECTOR(SLT − ECU) -> INSPECT LINE PRESSURE CONTROL SOLENOID ASSY(SLT)
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

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