Altitude corrector

F8Q 662

REMOVAL

Remove the high-pressure pipes.

Remove the instrumented injector (cylinder no. 3), using tool Mot. 997-01.

Disconnect the pump electrical connector.

Remove the two terminals for the altitude corrector from the 10-way pump connector.

To remove the pump connector terminals:

1. 1
   Pull the yellow guide to release it from the terminals, then press the two tabs on either side of the connector.
2. 2
   Remove the yellow guide.
3. 3
   Pull on the wire to be removed.
4. 4
   The terminal is held by two tabs, one on each side. Using a screwdriver, spread one tab (pulling on the wire prevents the tab from returning into place).
5. 5
   Using a screwdriver, spread the other tab.

The terminal can come out of the connector.

Remove the protective sheath grouping the pump actuators.

Remove the protective cap from the solenoid valve.

Remove the altitude corrector (1) using tool Mot. 1440.

1. Connector routing

INSTALLATION

IMPERATIVELY remove the small filter screen (2) from the bottom of the well using fine-nose pliers, and replace it with a new filter screen.

Tighten the actuator (1) to a torque of 3 daN.m using socket Mot. 1440.

Fit the new protection onto the actuator.

Reconnect the two terminals in the connector.

Reconnect the connector.

Refit the wiring protective sheath and its retaining clip.

Bleed the diesel circuit using the priming pump before restarting the engine.

IMPERATIVE: clear the memory by entering G0**. Mandatory road test of the vehicle after the operation.

ROLE: it acts on the flow rate according to altitude. If the vehicle is driven at an altitude of 1,000 metres or more, the ECU reduces the flow by 3 mm³/stroke. It restores the standard flow if the vehicle is driven at an altitude below 900 metres.