CorollaFix

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

System
ECT A245E/A246E
Dashboard light
CHECK ENGINE (MIL) does NOT light (DTC stored in memory only)
Applies to
4-speed A/T A245E/A246E (RM821E ECT section covers both). PK: ZZE121R-GEPNKP 1.6 auto = A246E 30500-1A761 (PartSouq EPC fig 3501). PK 1.3 NZE120 has no auto.
Check-engine blink code
77
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 5 V/ HINT: Division Refer to the chart fo and SLT− during engin GND
Possible causes
Transmission wire; Wire harness; SLT solenoid valve; Engine ECU r the wave form between terminals SLT+ e idling.
What to check
Workshop check order (RM821E): INSPECT TRANSMISSION WIRE -> CHECK WIRE HARNESS AND CONNECTOR(Transmission wire − Engine 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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