| | Test results |
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|
| First, check:- The level of the engine coolant fluid;- The cleanliness and condition of the radiator | Move on to Step 1 | 1. Engine coolant fluid level insufficient2. Radiator dirty, damaged or distorted | 1. Top up the engine coolant fluid level. If the problem persists, continue as instructed below, See table X010 ENGINE COOLANT LEAKS 2. Clean the radiator. If necessary, replace it Op. 1088B24 ENGINE COOLING RADIATOR - R.R. FOR AIR CONDITIONED VERSIONS |
| 1 | ENGINE OIL LEVEL CHECK | All OK | Problems encountered | Operation |
|---|
| Check the engine oil level | Move on to Step 2 | Insufficient engine oil level | Top up to the correct engine oil level |
| 2 | TANK CAP CHECK | All OK | Problems encountered | Operation |
|---|
| Check the condition of the expansion tank and, in particular, the seal on the cap | Move on to Step 3 | Cap faulty | Repair or replace the cap |
| 3 | TEMPERATURE GAUGE OPERATION CHECK | All OK | Problems encountered | Operation |
|---|
| Connect the diagnostic equipment (Examiner or other instrument) to the diagnostic socket (in the engine management control unit area): read the value of the engine temperature indicated between the parameters and compare it with the instrument reading | Move on to Step 4 | Values not consistent: gauge faulty | Proceed as instructed, See table K026 ENGINE COOLANT OVERHEATING WARNING LIGHT NOT WORKING |
| 4 | COOLANT TEMPERATURE SENSOR CHECK | All OK | Problems encountered | Operation |
|---|
| Check the operation of the engine coolant temperature sensor. See Test 1060OE ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK | End of diagnosis | 1. Sensor faulty2. Connections not correct3. Engine management control unit faulty | 1. Replace the temperature sensor Op. 1060G14 ENGINE COOLANT TEMPERATURE SENSOR - R.R. 2. Restore the connections See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT 3. Check the control unit thoroughly (using the diagnostic equipment - Examiner or other instruments) and, if necessary, replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
