Dtc P0756 Shift Solenoid B Performance (Shift Solenoid Valve S2). Corolla ZZE150

Трансмиссия. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150
Автоматическая Трансмиссия U341E. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150

ОПИСАНИЕ СИСТЕМЫ

MONITOR DESCRIPTION

INSPECTION PROCEDURE

CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0756)

INSPECT SHIFT SOLENOID VALVE S2

INSPECT TRANSMISSION VALVE BODY ASSEMBLY

DTC P0756 Shift Solenoid "B" Performance (Shift Solenoid Valve S2)


ОПИСАНИЕ СИСТЕМЫ

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

DTC No.
DTC Detection Condition
Trouble Area
P0756
The gear required by the ECM does not match the actual gear when driving (2-trip detection logic)
  1. Shift solenoid valve S2 remains open or closed
  2. Valve body is blocked
  3. Shift solenoid valve S2
  4. 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 or 4th gear position). When the gear position commanded by the ECM and the actual gear position are not same, the ECM illuminates the MIL and stores the DTC.

INSPECTION PROCEDURE

УКАЗАНИЕ:
Using the intelligent tester to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

PERFORM 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 on (IG).

  5. Turn on the tester.

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

  7. According to the display on the tester, perform the "Active Test".


УКАЗАНИЕ:
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 (See page Нажмите здесь).

Tester Display
Test Part
Control Range
Diagnostic Note
Control the Shift Position
[Test Details]
Operate the shift solenoid valve and set the each shift position by yourself.
[Vehicle Condition]
  1. IDL: ON
  2. Less than 50 km/h (31 mph)
[Others]
  1. Press "→" button: Shift up
  2. Press "←" button: Shift down
1st/2nd/3rd/4th
Possible to check the operation of the shift solenoid valves.
УКАЗАНИЕ:
  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 P0756)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the intelligent tester main switch on.

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

  1. Read the DTCs using the intelligent tester.

    Result:

    Result
    		Proceed to
    P0756
    		A
    P0756 and other DTCs
    		B
    УКАЗАНИЕ:
    If any other codes besides "P0756" are output, perform the troubleshooting for those DTCs first.


B
GO TO DTC CHART (Нажмите здесь)
A


2.INSPECT SHIFT SOLENOID VALVE S2


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Автоматическая Трансмиссия U341E.Система Автоматической Трансмиссии. Dtc P0756 Shift Solenoid B Performance (Shift Solenoid Valve S2)

  1. Remove the shift solenoid valve S2.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    Solenoid Connector (S2) - Solenoid Body (S2)
    		20°C (68°F)
    		11 to 15 Ω

  1. Connect the positive (+) lead to the terminal of the solenoid connector, and the negative (-) lead to the solenoid body.

    OK:
    The solenoid makes an operating sound.


NG
REPLACE SHIFT SOLENOID VALVE S2 (Нажмите здесь)
OK


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


NG
REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY (Нажмите здесь)
OK

REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSEMBLY (Нажмите здесь)