| | Results of the tests |
| 0 | PRELIMINARY CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the engine coolant level is within the preset levels and that the refrigerant fluid circulates correctly in the system | Move on to Step 1 | Engine coolant level too low. | Restore the correct level checking that there are no leaks from the system. Op. 0010T21 COOLANT CHECK DENSITY AND TOP UP IF NECESSARY |
| Refrigerant fluid not circulating correctly (thermostatic valve does not open sufficiently) | See fault diagnosis for thermostatic valve |
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Connect the Examiner diagnostic equipment and check that there are no errors at the engine temperature sensor | Move on to Step 2 | Error at the engine temperature sensor | See fault diagnosis for engine temperature sensor |
| 2 | CHECK ON CORRECT MANUAL CONTROL OPERATION | All OK | Problems encountered | Operation |
|---|
| With the engine on, the compressor off, with the temperature knob at the maximum hot position. Select the recirculation button the the closed position and set the fan speed to 3 and front ventilation distribution. Using the diagnostic equipment check that the engine temperature reaches at least 70 °C | End of diagnosis | The temperature does not appear to get hotter | Move on to Step 3 |
| 3 | CHECK ON CORRECT OPERATION OF KINEMATIC MECHANISM | All OK | Problems encountered | Operation |
|---|
| Check that the climate control flexible cables/kinematic mechanisms are working correctly | End of diagnosis | Operation of climate control flexible cables/kinematic mechanisms not correct | Replace the control unit and flexible transmission cables |