| 0 | Preliminary checks | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Select the following system on the diagnostic equipment: Diesel EDC16C39 electronic injection system.Cancel the errors present and turn the ignition key OFF.Wait for the engine management control unit to switch off (min. 20 secs.). | The main relay is switched off.If the engine is very hot, the fans remain on after the ignition is switched off.In this case, the control unit switches off automatically 10 secs after the fans are switched off. |
| Move on to Step 1 | | |
| 1 | Errors check | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Drive the vehicle in different driving conditions (engine speed and engine load) for a long stretch.Listen out for any unusual noises and other system irregularities.At the end of the road test, check that none of the following errors is present using the diagnostic equipment:- P0335 - Engine rpm sensor, with detail "signal not valid"
- P0606 - Control unit broken (microprocessor)
- P1618 – Control unit broken (HW CY940)
| End of diagnosis | 1. The engine is not running smoothly | 1. Proceed as instructed in the See table D003 ENGINE NOT RUNNING SMOOTHLY / (IRREGULAR OPERATION) |
| 2. The engine is losing power | 2. Proceed as instructed in the See table D004 FRONT/ENGINE COUPLING |
| 3. The engine does not produce maximum performance | 3. Proceed as instructed in the See table D005 ABS COUPLING |
| 4. The engine response is poor | 4. Proceed as instructed in the See table D016 ADDITIONAL DASHBOARD/LEFT FRONT DOOR COUPLING |
| 5. There is engine knock | 5. Proceed as instructed in the See table S003 ENGINE KNOCKING |
| 6. Error P0335 is present | 6. Proceed as instructed in the See Test 1060GI ENGINE SPEED CHECK |
| 7. Error P0606 is present | 7. Proceed as instructed in theSee Test 1060GK CONTROL UNIT SOFTWARE AND HARDWARE CHECK |
| 8. Error P1618 is present | 8. Proceed as instructed in the See Test 1060GL CHECK ON OPERATION OF ENGINE MANAGEMENT CONTROL UNIT MAIN RELAY |