P0776

DTC P0776 PRESSURE CONTROL SOLENOID "B" PERFORMANCE (SHIFT SOLENOID VALVE SL2)

SYSTEM DESCRIPTION

DTC Detecting Condition:

The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd or O/D gear).

Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical problems of the shift solenoid valves and valve body.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

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 O/D 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.

Step 1:

Step 2 - 4:

INSPECTION PROCEDURE

HINT: Performing the ACTIVE TEST using the hand-held tester allows the relay, VSV, actuator and so on to operate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method to shorten labor time. It is possible to display the DATA LIST during the ACTIVE TEST.

a. Turn the ignition switch off.
b. Connect the hand-held tester to the DLC3.
c. Turn the ignition switch to the ON position.
d. Push the "ON" button of the hand-held tester.
e. Select the item "DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / SHIFT".
f. According to the display on the tester, perform the "ACTIVE TEST".

HINT: While driving, the shift position can be forcibly changed with the hand-held tester. Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you to confirm the problem






HINT:
- This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less.
- The shift position commanded by the ECM is shown in the DATA LIST/SHIFT display on the hand-held tester.