DTC : P0761: General Description
Hydraulic pressure supply to the clutch by shift solenoid valve output
| Gear position | Neutral - 1st | 1st | Neutral - Reverse | Reverse | |
|---|---|---|---|---|---|
| Shift solenoid valve | A | ON | ON | ON | OFF |
| B | OFF | ON | OFF | OFF | |
| C | OFF | OFF | ON | ON | |
| 1st clutch | CPCD | LINE | - | - | |
| 4th clutch | - | - | CPCD | LINE | |
LINE : Line pressure
CPCD: A/T clutch pressure control solenoid valve D pressure
Shift solenoid valve C is installed on the transmission housing. It is controlled by the ON/OFF signal from the powertrain control module (PCM) to apply line pressure to the reverse inhibitor valve. A signal from the PCM is output to apply A/T clutch pressure control solenoid valve pressure to the correct gear clutch according to the shift schedule. When the signal to shift solenoid valve C from the PCM is on, and the line pressure is applied to the reverse inhibitor valve, it operates against the reverse inhibitor valve spring. When the signal to shift solenoid valve C from the PCM is off, and the line pressure is discharged, the reverse inhibitor valve is inactive. The PCM monitors the input shaft (mainshaft) speed and the output shaft (countershaft) speed according to the shift status determined by the shift schedule. When an improper gear ratio is output for the shift schedule, the PCM detects a shift solenoid valve C stuck off failure and stores a DTC.