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