Fuel pump relay/fuel pump

Fuel pump relay/fuel pump

-	Check that the following fuses are intact:

Are the fuses intact?

yes

Continue with point 2.

no

Change the fuse and start the engine. If the fuse blows, continue with point 6.

2. Check the performance of the fuel pump

-	Forcibly actuate the fuel pump by connecting a jumper lead between fuses 4 and 32.

The fuel pump should start working.

Did the fuel pump start working?

yes

Continue with point 3.

no

Continue with point 5.

3. Check the current applied to the pump relay

-	Remove the pump relay.

-	Connect a test lamp to the relay socket between:

The test lamp should light up.

Did the test lamp light up?

yes

Continue with point 4.

no

Check and if necessary repair or replace the lead between pin 30 of the relay socket and crimped connection J93.

4. Check the fuel pump relay

-	Connect a jumper lead to the relay socket between:

-	Listen for the sound of the fuel pump working.

Is the fuel pump working?

yes

Change the fuel pump relay.

no

Check and if necessary repair or replace the lead between pin 87 of the relay socket and fuse 32.

5. Check the fuel pump

-	Unplug connector H2-9 from the fuel pump. The connector is located adjacent to the fuel pump under the rear seat. Note that the connector with the two thick cables is the right one. The other one is connected to the level sensor.

-	Connect the test lamp to the 2-pin male connector between:

-	Connect the ISAT Scan Tool.

-	Select "ACTIVATE".

-	Select "PUMP RELAY".

The test lamp should flash at a frequency of 1 Hz.

Test lamp flashing?

yes

Check and if necessary change the fuel pump or the wiring between H4-7 and H2-9.

no

First check and if necessary repair or replace the lead between pin 2 and grounding point G3 and then the lead between pin 1 and fuse 32.

6. Check the fuel pump

-	Unplug connector H2-9 from the fuel pump. The connector is located adjacent to the fuel pump under the rear seat.

-	Change fuse 32.

-	Connect the ISAT Scan Tool.

-	Select "ACTIVATE".

-	Select "PUMP RELAY".

Did the fuse blow?

yes

Check and if necessary repair or replace the wiring between fuse 32 and pin 1 of connector H2-9.

no

Change the fuel pump.