Dtc P0796 Pressure Control Solenoid C Performance (Shift Solenoid Valve Sl3)

Transmission. Camry. Acv40 Gsv40
U250E Automatic Transaxle. Camry. Acv40 Gsv40

SYSTEM DESCRIPTION

MONITOR DESCRIPTION

INSPECTION PROCEDURE

CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0796)

INSPECT SHIFT SOLENOID VALVE (SL3)

INSPECT TRANSMISSION VALVE BODY ASSEMBLY

INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

DTC P0796 Pressure Control Solenoid "C" Performance (Shift Solenoid Valve SL3)


SYSTEM DESCRIPTION

The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical troubles of the shift solenoid valves and valve body.

DTC No.
DTC Detecting Condition
Trouble Area
P0796
The gear required by the ECM does not match the actual gear when driving (2-trip detection logic)
  1. Shift solenoid valve SL3 remains open or closed
  2. Valve body is blocked
  3. Automatic transaxle (clutch, brake or gear etc.)

MONITOR DESCRIPTION

The ECM commands gear shifts by turning the shift solenoid valves "ON/OFF". According to the input shaft revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual gear position (1st, 2nd, 3rd, 4th or 5th gear position). When the gear position commanded by the ECM and the actual gear position are not the same, the ECM illuminates the MIL and stores the DTC.

INSPECTION PROCEDURE


ACTIVE TEST
HINT:
Performing the intelligent tester Active Test allows relay, Vacuum Switching Valve (VSV), actuator and other items to be operated without removing any parts. Performing the Active Test early in troubleshooting is one way to shorten labor time.
The Data List can be displayed during the Active Test.

  1. Warm up the engine.

  2. Turn the ignition switch off.

  3. Connect the intelligent tester to the DLC3.

  4. Turn the ignition switch to the ON position.

  5. Turn on the tester.

  6. Select the item "Enter / Powertrain / ECT / Active Test".

  7. Follow the instructions on the tester and read the Active Test.

    HINT:
    While driving, the shift position can be forcibly changed with the intelligent tester.
    Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you to confirm the problem (CAMRY_ACV40 RM000000O8L02PX.html).

    Item
    		Test Details
    		Diagnostic Note
    Control Shift Position
    		[Test Details]
    Operate the shift solenoid valve and set each shift position by yourself.
    [Vehicle Condition]
    1. Less than 50 km/h (31 mph)
    [Others]
    1. Press "→" button: Shift up
    2. Press "←" button: Shift down
    		Possible to check the operation of the shift solenoid valves.
    HINT:
    1. This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less.
    2. The shift position commanded by the ECM is shown in the DATA LIST (Shift Status) display on the intelligent tester.
1.CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0796)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position.

  1. Turn on the tester.

  1. Select the item "Powertrain / ECT / DTC / Current or Pending".

  1. Read the DTCs using the intelligent tester.

    Result:

    Display (DTC output)
    		Proceed to
    Only "P0796" is output
    		A
    "P0796" and other DTCs
    		B
    HINT:
    If any other codes besides "P0796" are output, perform troubleshooting for those DTCs first.


B
GO TO DTC CHART
A


2.INSPECT SHIFT SOLENOID VALVE (SL3)


    Camry. Acv40 Gsv40.U250E Automatic Transaxle.Automatic Transaxle System. Dtc P0796 Pressure Control Solenoid C Performance (Shift Solenoid Valve Sl3)

  1. Remove the shift solenoid valve SL3.

  1. Measure the resistance according to the value(s) in the table below.

    Resistance:
    Tester Connection
    		Specified Condition
    20°C (68°F)
    1 - 2
    		5.0 to 5.6 Ω

  1. Connect the positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve.

    OK:
    The solenoid makes an operating sound.


NG
REPLACE SHIFT SOLENOID VALVE (SL3)
OK


3.INSPECT TRANSMISSION VALVE BODY ASSEMBLY
OK:
There are no foreign objects on each valve.


NG
REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY
OK


4.INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY
OK:
The torque converter clutch operates normally.


NG
REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY
OK

REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSEMBLY