Self-diagnosis of automatic transmission Nissan Expert
Required tools:
* Paperclip or wire
Procedure:
1. Make sure the car is in park and the engine is turned off.
2. Locate the DLC diagnostic connector. It is usually located under the dashboard, to the left of the steering column.
3. Insert a paperclip or wire into the DLC pins, connecting the TC (4) and GND (2) pins. ([DLC Pin Configuration](https://i.stack.imgur.com/0hK54.png))
4. Turn on the ignition, but do not start the engine.
5. Wait a few seconds until you see the OD indicator on the dashboard flashing.
Interpretation of the flashing code:
* One long flash (flashes 10 times) followed by short flashes: Trouble codes P0700 – P0715 (see table below).
* Two long flashes (flashes 20 times) followed by short flashes: Trouble codes P0716 – P0799 (see table below).
* Three long flashes (flashes 30 times): No fault codes.
Fault code table:
| Code | Description |
|—|—|
| P0700 | Transmission control system malfunction |
| P0705 | Transmission speed sensor malfunction |
| P0706 | Shift Range Sensor Malfunction |
| P0711 | Torque Converter Lockup Solenoid Malfunction |
| P0712 | Transmission Supply Voltage Low |
| P0713 | Transmission supply voltage high |
| P0714 | Transmission Oil Pressure Sensor Circuit Malfunction |
| P0715 | Transmission oil pressure sensor malfunction |
| P0716 | Transmission oil temperature sensor malfunction |
| P0717 | Vehicle speed sensor malfunction |
| P0718 | Shift Solenoid Control Circuit Malfunction |
| P0719 | Shift Solenoid Malfunction |
| … | … |
Note:
*If you see three or more long flashes, this indicates that the self-test has not been performed properly. Repeat the procedure.
*If you find a fault code, contact a professional mechanic for further diagnosis and repair.