| STEP | OPERATIONS TO BE CARRIED OUT | TEST RESULTS |
|---|
| 0 | PRELIMINARY CHECKS | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the following, in order:- correct battery lead connection
- no leaks in fuel circuit;
- condition of the air intake circuit;
- no obstructions in the catalytic converter;
- no water or impurities in the diesel fuel.
| Move on to Step 1 | Battery leads loose | Restore the correct tightness |
| Fault in the air intake circuit | Renew the air intake circuit |
| Obstruction in the catalytic converter | Replace the catalytic converter Op. 1080B62 CATALYTIC CONVERTER - R + R |
| Water in diesel fuel | Remove water from diesel fuel |
| Leaks in fuel circuit | Eliminate leaks |
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Connect the Examiner tester to the tester output.Check:- that there are no errors in the control unit;
- parameter plausibility.
| Move on to Step 2 | Error detected in the control unit | Continue following the instructions for the diagnostic equipment |
| Parameters not plausible | Continue following the instructions for the diagnostic equipment |
| 2 | ROAD TEST USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Carry out a road test keeping the diagnostic equipment connected. | Take care to reproduce the conditions under which the problem occurs |
Check:- that there are no errors in the control unit;
- parameter plausibility.
| Move on to Step 3 | The sudden onset of errors in the control unit is detected | Continue following the instructions for the diagnostic equipment |
| Parameters off the scale | Continue following the instructions for the diagnostic equipment |
| 3 | BRAKE PEDAL SWITCH CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that the brake pedal switch is working properly See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT | Move on to Step 4 | Brake pedal does not return | Eliminate the cause of the sticking |
| Switch stuck closed | Replace the switch |
| Wiring short-circuited | Eliminate the cause of the problem See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT |
| 4 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that the fault is no longer present | | Fault persists control unit defective | Replace engine control unit Op. 1060G80 DS ELECTRIC INJECTION CONTROL UNIT - R R |