Toyota Camry (XV70): Pressure Control Solenoid "B" Actuator Stuck Off (P07757F)
Toyota Camry Repair Manual XV70 (2018-2024) / Drivetrain / Ua80e (automatic Transmission / Transaxle) / Automatic Transaxle System / Pressure Control Solenoid "B" Actuator Stuck Off (P07757F)
DESCRIPTION
Based on signals from the transmission revolution sensors (NT and NC), the actual gear is detected.
The ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical malfunctions of the solenoid valves, transmission valve body assembly and automatic transaxle assembly (clutch, brake, gear, etc.).
Actual gear when solenoid (SL2) valve malfunction occurs (without fail-safe control):|
ECM commanded gear | 1st |
2nd | 3rd |
4th | 5th |
6th | 7th |
8th |
|---|---|---|---|---|---|---|---|---|
| *: Neutral | ||||||||
| Actual gear during SL2 stuck ON malfunction |
5th | 5th |
3rd to 5th | 4th to 5th |
5th | 6th |
7th | 8th |
|
Actual gear during SL2 stuck OFF malfunction |
1st | 2nd |
3rd | 4th |
N* | N* |
N* | N* |
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Memory |
Note |
|---|---|---|---|---|---|---|
| P07757F |
Pressure Control Solenoid "B" Actuator Stuck Off |
All of the following conditions are met (2-trip detection logic):
|
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DESCRIPTION The transmission revolution sensor (NC) detects the rotation speed of the counter gear which shows the output shaft speed of automatic transaxle assembly.
Based on the transmission revol
Pressure Control Solenoid "C" Circuit Short to Battery (P079512)
DESCRIPTION Changing gears is performed by the ECM turning the solenoid (SL1, SL2, SL3, SL4, SL5 and SL6) valves on and off.
If an open or short occurs in any of the solenoid valve circuits, the ECM
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DESCRIPTION Refer to DTC P079512. Click here
DTC No. Detection Item
DTC Detection Condition Trouble Area
MIL Memory
Note P079514
Pressure Control Solenoid "C"
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PROCEDURE
1.
CHECK C
Parts Location
PARTS LOCATION ILLUSTRATION
*1 FRONT CORNER ULTRASONIC SENSOR LH
*2 FRONT CENTER ULTRASONIC SENSOR LH
*3 FRONT CENTER ULTRASONIC SENSOR RH
*4 FRONT CORNER ULTRASONIC SENSOR RH
*5 REAR CORNER ULTRASONIC SENSOR LH
*6 REAR CENTER ULTRASONIC SENSOR
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