P0757

P0757 - 2-3 SHIFT SOLENOID VALVE PERFORMANCE - NO THIRD OR FOURTH GEAR (L61)





The 1-2 shift solenoid valve (1-2 SS Valve) is a normally open exhaust valve that in conjunction with the 2-3 shift solenoid valve (2-3 SS Valve), allows four different shifting combinations. The 2-3 SS Valve is attached to the control valve body, within the transaxle. The PCM monitors the actual gear ratio and compares the actual gear ratio with the commanded gear ratio. This diagnostic will detect the following conditions: A stuck Off 2-3 SS Valve, or a stuck Off 2-3 Shift Valve. There conditions will cause the actual gear ratio to be different from the commanded; 2nd gear ratio in 3rd and 1st gear ratio in 4th and thus set DTC P0757.

DTC PARAMETERS
DTC P0757 will set if either of the following cases occur:
3rd gear is commanded and the gear ratio is between 1.54 to 1.71 (case 1).

OR

4th gear is commanded and the gear ratio is between 2.87 to 3.13 (case 2) when:
- Engine speed is below 6500 RPM.
- TR. Sw. is equal to D4, D3, D2, or D1.
- TP angle is greater than 8%.
- Vehicle speed greater than 8 km/h (5 mph).
- TFT between 21°C (70°F) and 130°C (266°F).
- Engine torque is between 27 and 407 Nm (20 and 300 ft. lbs.).
- No ISS, OSS, shift solenoid electrical, TFP, engine torque, or TP sensor DTCs have been set.
- Transmission ISS is between 150 and 6000 RPM.
- Transmission OSS is greater than 150 RPM.
- Ignition voltage is between 8 and 18 volts.

P0757 is a type A DTC.

DIAGNOSTIC AIDS
- 2-3 shift solenoid valve - stuck Off
- 2-3 shift valve - solenoid is leaking - stuck Off