DTC P0731 A/T 1ST Gear Function: Description
WARNING: This page is about a different car, the 2007 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
- This malfunction will not be detected while the O/D OFF indicator lamp is indicating another self-diagnosis malfunction.
- This malfunction is detected when the A/T does not shift into first gear position as instructed by the TCM. This is not caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such as control valve sticking, improper solenoid valve operation, etc.
SHIFT SOLENOID VALVE CHART
| Gear position | Shift solenoid valve | |||||
|---|---|---|---|---|---|---|
| A | B | C | D | E | ||
| 1st | D | ON (Closed) | ON (Open) | ON (Open) | OFF (Open) | OFF (Closed) |
| L | ON (Closed) | ON (Open) | ON (Open) | OFF (Open) | OFF (Closed) | |