Toyota Camry (XV70): Pressure Control Solenoid "A" Actuator Stuck Off (P07457F)
Toyota Camry Repair Manual XV70 (2018-2024) / Drivetrain / Ua80e (automatic Transmission / Transaxle) / Automatic Transaxle System / Pressure Control Solenoid "A" Actuator Stuck Off (P07457F)
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 (SL1) valve malfunction occurs (without fail-safe control):|
ECM commanded gear | 1st |
2nd | 3rd |
4th | 5th |
6th | 7th |
8th |
|---|---|---|---|---|---|---|---|---|
| *: Neutral | ||||||||
| Actual gear during SL1 stuck ON malfunction |
1st | 2nd |
3rd | 4th |
5th | 4th to 5th |
3rd to 5th | 5th |
|
Actual gear during SL1 stuck OFF malfunction |
N* | N* |
N* | N* |
N* | 6th |
7th | 8th |
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Memory |
Note |
|---|---|---|---|---|---|---|
| P07457F |
Pressure Control Solenoid "A" Actuator Stuck Off |
All of the following conditions are met (2-trip detection logic):
|
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Pressure Control Solenoid "B" Circuit Short to Battery (P077512)
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
Pressure Control Solenoid "B" Circuit Short to Ground or Open (P077514)
DESCRIPTION Refer to DTC P077512. Click here
DTC No. Detection Item
DTC Detection Condition Trouble Area
MIL Memory
Note P077514
Pressure Control Solenoid "B"
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 m
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Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE FRONT DISC BRAKE PISTON
(a) Place a piece of cloth between the front disc brake piston and front disc brake cylinder.
*a Cloth
(b) Apply compressed air to remove the front disc brake piston from the front disc brake cy
Installation
INSTALLATION CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. INSTALL PARKING BRAKE ACTUATOR ASSEMBLY
(a) Apply a light coat of lithium soap base glycol grease to a new O-ring.
(b) Install the
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