Shift Control
The PCM instantly determines which gear should be selected by various signals sent from the sensors and the switches, and it actuates shift solenoid valves A, B, and C to control shifting transmission gear.
The shift solenoid valves use ON-CLOSE/OFF-OPEN type; the shift solenoid valve closes the port of shift solenoid valve pressure while the shift solenoid valve is turned ON by the PCM, and opens the port when the shift solenoid valve is OFF.
The combination of driving signals to shift solenoid valves A, B, and C are shown in the table.
GEAR POSITION CHART
| Position | Gear Position | Shift Solenoid Valves | ||
|---|---|---|---|---|
| A | B | C | ||
| D | Shifting from the N position | OFF | ON | OFF |
| Stays in 1st | ON | ON | ON | |
| Shifting gears between 1st and 2nd | ON | ON | ON | |
| Stays in 2nd | ON | ON | OFF | |
| Shifting gears between 2nd and 3rd | OFF | ON | OFF | |
| Stays in 3rd | OFF | ON | ON | |
| Shifting gears between 3rd and 4th | OFF | OFF | ON | |
| Stays in 4th | OFF | OFF | OFF | |
| Shifting gears between 4th and 5th | ON | OFF | OFF | |
| Stays in 5th | ON | OFF | ON | |
| 2 | 2nd | ON | ON | OFF |
| 1 | 1st | ON | ON | ON |
| N | Neutral | OFF | ON | OFF |
| R | Shifting from the P and N positions | OFF | ON | ON |
| Stays in reverse | OFF | ON | OFF | |
| Reverse inhibit control | ON | ON | ON | |
| P | Park | OFF | ON | OFF |