| PRELIMINARY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| 0 | 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 | 1.Engine coolant level too low. | 1,Restore the correct level Op. 0010T84 COOLANT FOR AIR CONDITIONING SYSTEM - DEHYDRATE AND REPRESSURIZEcheck for leaks |
| 2.Coolant does not circulate correctly: thermostat valve operationg incorrectly. | 2.Perform diagnosis See table K025 ENGINE COOLANT TEMPERATURE GAUGE NOT WORKING |
| CHECK ON CORRECT CLIMATE CONTROL SYSTEM OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| 1 | With the engine on and the compressor off, in manual mode with the temperature knob at the maximum hot HI position.Also set the recirculation button to the closed position and set the fan speed to 6 bars (display) and the distribution to front ventilation.Use the diagnostic tester to check that the engine temperature reaches at least 70 °C.Check that the air temperature at the front distribution outlet is greater than 60 °C. | End of diagnosis | The temperature of the air coming out of the vents is not as desired. | Move on to Step 2 |
| CHECK ON CORRECT CLIMATE CONTROL SYSTEM OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| 1 | With the engine on and the compressor off, in manual mode with the temperature knob at the maximum hot HI position.Also set the recirculation button to the closed position and set the fan speed to the 3rd setting and the distribution to front ventilation.Use the diagnostic tester to check that the engine temperature reaches at least 70 °C.Check that the air temperature at the front distribution outlet is greater than 60 °C. | End of diagnosis | The temperature of the air coming out of the vents is not as desired. | Move on to Step 2 |
| CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| 2 | Connect the diagnostic equipment and check:- that there are no errors at the air mixing actuators
- that there are no faults in the engine temperature sensor
| End of diagnosis | 1. Short circuit error at the air mixing actuators | 1.Move on to Step 3 |
| 2. Error in the engine temperature sensor | 2. Continue as instructed by the diagnostic equipment |
| CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| 2 | Connect the Examiner diagnostic equipment and check that there are no errors in the engine temperature sensor | Move on to Step 5 | Error in the engine temperature sensor | Continue as described by the diagnostic equipment |
| ELECTRICAL CIRCUIT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| 3 | Check whether the electrical wiring connections are loose:Disconnect and check for damage in the connector contacts/reconnect the connection to the actuator.Check the continuity/insulation of the electrical connection:- of the air mixing actuator/s.
- the connection on the control unit.
| Move on to Step 4 | 1. Electrical connections loose or damaged. | 1. Renew the electrical connections See E6020 AIR CONDITIONING |
| 2. Electrical connection broken or not insulated. | 2. Restore the continuity/insulation of the electrical connection See E6020 AIR CONDITIONING |
| CHECK ON CORRECT OPERATION USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| 4 | Check for persistent errors in the air mixer actuators | End of diagnosis | Air mixing actuator error | Move on to Step 5 |
| CHECK THE CORRECT OPERATION OF THE MIXER ACTUATOR DRIVE CHAIN | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| 5 | Visually check the correct operation of the mixer actuator from the climate control unit temperature control knob.Check whether the control on the control unit is interrupted by checking the electrical continuity in accordance with the test.See Test 5040DH SEQUENTIAL PROCEDURE FOR CHECKING OPERATION OF MIXTURE AND DISTRIBUTION ACTUATORS | Move on to Step 6 | 1. Incorrect operation of actuator | 1. Replace the mixer actuator Op. 5040D77 AIR CONDITIONER MIXER FLAP CONTROL MOTOR - R R |
| 2. Physical impediment to flap rotation | 2. Replace the control unit |
| 3. Incorrect operation of the control actuator on the climate control unit | 3. Replace the climate control system control unit Op. 5040D18 AIR CONDITIONING CONTROL UNIT - R.R. |
| CHECK THE CORRECT OPERATION OF THE MIXER ACTUATOR DRIVE CHAIN | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| 5 | Visually check the correct operation of the mixer actuator from the climate control unit temperature control knob.Check whether the control on the control unit is interrupted by checking the electrical continuity in accordance with the test.See Test 5040DH SEQUENTIAL PROCEDURE FOR CHECKING OPERATION OF MIXTURE AND DISTRIBUTION ACTUATORS | Move on to Step 6 | 1. Incorrect operation of actuator | 1. Replace the mixer actuator Op. 5040D77 AIR CONDITIONER MIXER FLAP CONTROL MOTOR - R R |
| 2. Physical impediment to flap rotation | 2. Replace the control unit |
| 3. Incorrect operation of the control actuator on the climate control unit | 3. Replace the climate control system control unit Op. 5040D18 AIR CONDITIONING CONTROL UNIT - R.R. |
| AIR MIXTURE ACTUATOR FLAP CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| 6 | Check that the air mixture actuator flap completes its travel without any impediment | End of diagnosis | 1. Flap travel incomplete | 1. Free the air mixer actuator flap from the impediment |
| 2. Flap damaged | 2. Replace the flap |
| 3. Drive chain/gears damaged. | 3. Restore the correct drive chain. |
