Gearbox sensors — removal and installation (Peugeot Eurovans 807)

Input shaft speed sensor

Removal

Important! There is no need to drain the transmission oil to perform this operation.

1. Disconnect the negative (-) battery terminal from the battery.

2. Remove the air filter by disconnecting its air duct from the intake manifold, as well as the cabin filter.

3. Unscrew the two bolts 1 of the cover 2 of the gearbox modulator connector strip and remove the cover (see illustration). Tightening torque of bolts 10 Nm.



4. Disconnect the yellow three-pin connector 4 of the input shaft speed sensor from the connector strip (see illustration).





5. Remove the front left wheel and fender liner.

6. Release the wiring harness of the input shaft speed sensor from the holders, unscrew bolt 6 and remove the input shaft speed sensor 5 (see illustration 6.4).

Installation of the input shaft speed sensor is carried out in the reverse order of removal.

7. Replace the sensor O-ring with a new one.

Secondary shaft speed sensor

Removal

Important! There is no need to drain the transmission oil to perform this operation.

8. Remove the battery and front left wheel.

9. Unscrew bolt 1, remove output shaft speed sensor 2, disconnect its plug 3, releasing it from the holder (see illustration).

Caution! The plug holder is quite fragile. Don't damage it

The output shaft speed sensor is installed in the reverse order of removal.

Transmission oil pressure sensor

Removal

Important! There is no need to drain the transmission oil to perform this operation.

10. Disconnect the negative (-) battery terminal from the battery.

11. Remove the air filter by disconnecting its air duct from the intake manifold, as well as the cabin filter.



12. Unscrew the two bolts 1 of the cover 2 of the gearbox modulator connector strip and remove the cover (see illustration 6.3). Tightening torque of bolts 10 Nm.

13. Disconnect the green three-pin connector 3 of the transmission fluid pressure sensor from the connector strip 2 (see illustration).



14. Remove the front left wheel and fender liner.

15. Release the transmission fluid pressure sensor wire from the holders, unscrew the two bolts securing it and disconnect the transmission fluid pressure sensor 4 (see illustration 6.13).

Installation of the input shaft speed sensor is carried out in the reverse order of removal.

16. Replace the sensor O-ring with a new one.

Transmission fluid temperature sensor. Automatic transmission BVA AL4

Removal

17. Remove the modulator.

Caution! If you replace the transmission fluid temperature sensor 1, the modulator wiring harness must also be replaced (see illustration 6.17).

18. Unscrew the two bolts that secure the 5-plug bar, as well as the two bolts of the 6-bar bracket (see illustration).



19. Disconnect the yellow twelve-pin connector 3 of the transmission fluid temperature sensor from the connector strip, remove the holder 4 and disconnect the modulator wiring harness (see illustration 6.18).

The transmission fluid temperature sensor is installed in the reverse order of its removal.

Caution! When installing the modulator wiring harness, maintain its original position.

Transmission fluid temperature sensor. 4HP20 AT

Removal

20. Remove the modulator.

21. Disconnect the transmission fluid temperature sensor 1 (see illustration).

Caution! If the coolant temperature sensor is replaced, the entire modulator wiring harness must be replaced, because wire 1 of the sensor is connected to the harness (see illustration 6.21a).

The sensor is installed in the reverse order of its removal.