Shift Control
The PCM instantly determines which gear should be selected by various signals sent from the sensors and the switches, and it actuates the shift solenoid valves A, B, C, and D to control gear selection.
There are two types of shift solenoid valves:
- Shift solenoid valves A and D use the ON-OPEN/OFF-CLOSE type; the shift solenoid valve opens the port of shift solenoid valve pressure while the 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 the 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 shift solenoid valve is OFF.
The combination of driving signals to shift solenoid valves A, B, C, and D are shown in the table.
SHIFT SOLENOID VALVES CHART
| Position | Gear position | Shift solenoid valves | |||
|---|---|---|---|---|---|
| A | B | C | D | ||
| D and S | Shifting from N | OFF | ON | OFF | OFF |
| Stays in 1st | OFF | ON | ON | OFF or ON | |
| Shifting gears between 1st and 2nd | ON | ON | ON | OFF or ON | |
| Stays in 2nd | ON | ON | OFF | OFF or ON | |
| 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 | |
| D | Shifting gears between 4th and 5th | OFF | OFF | ON | OFF or ON |
| Stays in 5th | OFF | ON | ON | OFF or ON | |
| S with sequential sportshift mode | 1st | OFF | ON | ON | OFF or ON |
| 2nd | ON | ON | OFF | OFF or ON | |
| 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 | OFF | ON | ON | ON |
| Stays in reverse | ON | ON j | OFF | ON | |
| Reverse inhibit control | OFF | ON | OFF | OFF | |
| P | Park | OFF | ON | OFF | ON |