Turn the ignition key ON.

With the engine off and all electrical appliances off and the clutch pedal not activated, check that the clutch pedal is Released.

Under the same conditions, the clutch pedal must be Depressed with the clutch pedal activated.

The test can be considered over

Turn the ignition key OFF.

Disconnect the wiring harness connector from the clutch pedal switch.

Turn the ignition key ON.

Measure the voltage across pin 2 (wiring side) of the switch wiring connector

See I031 CLUTCH PEDAL SWITCH

and Earth, checking it is greater than 11 V

Move on to Step 7

Turn the ignition key OFF.

In the Body Computer, remove fuse F22 from the base unit (fourth in the right hand row), checking whether it has blown

Repair or if necessary replace the electrical wiring between the Body Computer and clutch pedal switch

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

Fit a new fuse F22 and check it does not blow.

Move on to Step 6

Disconnect the wiring harness connector from the brake pedal switch.

Fit a new fuse F22 and check it does not blow.

Repair or replace the electrical wiring between the body computer, brake pedal switch, clutch pedal switch and engine control unit.

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

Continue as instructed in the

See Test 5550DA BRAKE PEDAL SWITCH OPERATION CHECK

Measure the voltage across pin 4 (wiring side) of the switch wiring connector

See I031 CLUTCH PEDAL SWITCH

and Earth, checking it is less than 0.3 V.

Move on to Step 9

Turn the ignition key OFF.

Disconnect the cable loom connector from the engine management control unit connector A.

Turn the ignition key ON.

Measure the voltage across pin 4 (wiring side) of the switch wiring connector

See I031 CLUTCH PEDAL SWITCH

and Earth, checking it is greater than 0.3 V

Move on to Step 10

Repair or if necessary replace the electrical wiring between the engine control unit and the brake light switch.

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

Replace the engine management control unit

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

Connect a shunt cable with a fuse between pin 4 of the switch wiring connector (wiring side)

See I031 CLUTCH PEDAL SWITCH

and the battery positive

Check that the clutch pedal is Depressed

Replace the clutch pedal switch

Op. 1060D42 SWITCH ON CLUTCH PEDAL- R. R (DIESEL ENGINES)