| | Test results |
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Using the Examiner in active diagnosis, check that the heater plugs warning light is working properly | Move on to Step 2 | The warning light does not flash | Replace the Instrument Panel Op. 5560B10 CONTROL PANEL - R+R |
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Connect an Examiner to the engine management control unit and check for the presence of faults | Move on to Step 3 | Presence of faults | Continue as instructed by the diagnostic equipment |
| 3 | ELECTRICAL POWER SUPPLY CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the electrical power supply for the glow heater plugs control unit is correctCheck the continuity of the wiring between the glow heater plugs control unit and the engine management control unitCheck that the glow heater plugs are working properly | Move on to Step 4 | 1. Fault in positive electrical supply and/or earth from glow plug preheating control unit2. Glow heater plugs defective3. Glow heater plugs control unit defective | 1. Restore correct power supply2. Restore the damaged wiring to correct operation3. Replace glow heater plugs Op. 5520C10 HEATER PLUGS - R+R 4. Replace glow heater plug control unit Op. 5520C20 HEATER PLUGS CONTROL UNIT - R.R |
| 4 | ENGINE CONTROL UNIT OPERATION CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the engine control unit is working properly | End of diagnosis | Engine control unit defective | Replace the engine control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
| 4 | GLOW HEATER PLUGS SYSTEM CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the connection between the glow heater plugs control unit and the glow heater plugs is correctCheck that the glow heater plugs are working properly. | Move on to Step 5 | 1. Wiring defective2. Glow heater plugs defective3. Glow heater plugs control unit defective | 1.Restore the correct wiring.2.Replace the defective glow heater plugs Op. 5520C10 HEATER PLUGS - R+R 3.Replace the glow heater plugs control unit Op. 5520C20 HEATER PLUGS CONTROL UNIT - R.R |
| 5 | ELECTRICAL POWER SUPPLY CHECK | All OK | Problems encountered | Operation |
|---|
| Check the node power supply/electrical connections are correct. Check the (network) wiring between Engine Control, Body Computer and Instrument Panel. Check, in particular, that each individual pin is correctly connected to each node. | Move on to Step 6 | 1. Fault in positive electrical supply and/or earth2. Electrical connections not operational3. Engine control unit defective | 1. Restore correct power supply2. Restore correct wiring.3. Replace the Engine Management Node Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
| 6 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Use an Examiner to check the possibility of connection to the Body Computer NodeCheck that the body computer is working properly. | End of diagnosis | Body Computer defective | Replace Body Computer Op. 5505A32 BODY COMPUTER - R.R |
