When the accelerator pedal is left without operating for at least 70 seconds, the measured air mass must be in a range between 25 and 35 kg/h.

The test can be considered over

Check the tightening and connections of the oil dipstick and the engine oil filler cap

Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY

Check that the seal of the intake/turbo system hoses is efficient (secondary air, blockages and porosity)

Check that the pipe restriction bands in the air intake/inlet system are correctly fitted.

Check the hoses and connected pipes to identify any obstructions, damage etc.

Check that the air filter is not contaminated and is correctly fitted

Op. 1048A10 AIR FILTER ASSEMBLY - R.R.

Clean or, if necessary, replace the wiring

Op. 1060G10 AIR FLOW METER - R.R.

Check that the EGR valve is working properly by carrying out the

See Test 1080CB EGR SOLENOID OPERATION CHECK

Turn the ignition key to the OFF position.

Disconnect the wiring harness connector from the air flow meter.

Measure the voltage across gauge Pin 2

and Earth, checking it is greater than 11 V

Move on to Step 16

Remove fuse F59 (second from the left on the second row from the bottom) from the engine compartment junction unit and check it has not blown.

Move on to Step 14

Turn off all the electrical users.

Release any gear (neutral)

Fit a new fuse F59 and check it does not blow.

Repair or if necessary replace the electrical wiring between the engine compartment junction unit and the debimeter

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

Replace the debimeter

Op. 1060G10 AIR FLOW METER - R.R.

The test can be considered over

Restore the correct electrical connections in the engine compartment junction unit

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

If necessary, replace it

Op. 5505A13

Repair or if necessary replace the electrical wiring between the engine compartment junction unit and the debimeter

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

The test can be considered over

Measure the voltage between gauge Pins 2 and 3

See K041 AIR FLOW METER

checking that it is less than 11 Ohm. Move on to Step 18

If faults are present, repair or if necessary replace the electrical wiring between the debimeter and the engine control unit.

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

The test can be considered over

Replace the engine management control unit

Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R

Measure the voltage across gauge Pin 4

See K041 AIR FLOW METER

and the earth, checking that it is in a range between 4.8 and 5.2 V

Replace the debimeter

Op. 1060G10 AIR FLOW METER - R.R.

and check the fault has disappeared

Repair the original debimeter and replace the engine management control unit.

Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R