Connect the climate control system to the special repressurizing equipment and check the system pressures by carrying out the

See Test 5040OB AIR CONDITIONING SYSTEM OPERATION CHECK (PRESSURE)

Check that the engine cooling fan is working properly.

1. Pressure not correct

2. Incorrect operation of engine cooling fan.

1. Move on to Step 1

2. Carry out the

See Test 5040AB REFRIGERANT CIRCUIT CHECK

1. Gas leak from condenser.

2. O-ring seals puckered.

1. Replace the condenser

Op. 5040A40 AIR CONDITIONING CONDENSER - R+R

and refill correctly.

2. Replace the o-rings and refill correctly.

Op. 0010T84 COOLANT FOR AIR CONDITIONING SYSTEM - DEHYDRATE AND REPRESSURIZE

Signal the point where the gas is escaping at the condenser

1. Gas leak from evaporator.

2. O-ring seals puckered.

1. Replace the evaporator

Op. 5040C64 A/C EVAPORATOR - R+R

and refill correctly

2. Replace the o-rings and refill correctly.

Op. 0010T84 COOLANT FOR AIR CONDITIONING SYSTEM - DEHYDRATE AND REPRESSURIZE

Signal the point where the gas is escaping at the evaporator.

With the engine started and the climate control system at the maximum speed (compressor button ON), place the temperature adjustment button in the LO position, move the probe of the leak detector near the pipe outlet connector and check for any leaks.

If there is a leak, repeat the test to make sure that there really is a leak.

With the engine switched off, move the leak detector probe to the area of the compressor shaft and the compressor rear seal.

If there is a leak, repeat the test to make sure that there really is a leak.

1. O-ring seals puckered.

2. Leak from compressor shaft stem.

3. Leak from compressor rear seal.

1. Replace the o-rings and refill correctly.

Op. 0010T84 COOLANT FOR AIR CONDITIONING SYSTEM - DEHYDRATE AND REPRESSURIZE

2. Replace the compressor.

Op. 5040A20 AIR CONDITIONING COMPRESSOR - R+R - INCLUDES FLUID LEVEL CHECK AND TOP UP IF NECESSARY

3. Replace the compressor.

Op. 5040A20 AIR CONDITIONING COMPRESSOR - R+R - INCLUDES FLUID LEVEL CHECK AND TOP UP IF NECESSARY

Connect the diagnostic equipment and check:

• that there are no errors at the air mixing actuator;
• that there are no faults in the treater air sensors;
• that there are no faults in the outside temperature sensor;
• that there are no faults in the front sensor;
• that there are no faults in the passenger compartment temperature sensor;
• that there are no errors at the linear sensor.

1. Error in the air mixture actuator.

2. Error in the treated air sensors

3. Error in the outside temperature sensor

4. Error at the frost sensor

5. Error at the passenger compartment temperature sensor.

6. Error at the linear sensor

1. Move on to Step 5

2. Move on to Step 5

3. Move on to Step 5

4. Move on to Step 5

5. Move on to Step 5

6. Move on to Step 9

Check the continuity/insulation and visually inspect for any looseness or damage at the electrical connection contacts:

• of the air mixture actuator in the case of an error in the mixture actuator;
• of the sensor if there is an error at the outside temperature sensor;
• of the sensor if there is an error at the frost sensor
• of the climate control system control unit connector.

See E6020 AIR CONDITIONING

1. Electrical connections loose or damaged.

2. Electrical connection broken or not insulated.

1. Renew the electrical connections.

See E6020 AIR CONDITIONING

2. Restore the continuity/insulation of the electrical connection.

See E6020 AIR CONDITIONING

1. Pipe from compressor to condenser obstructed.

2. Pipe from condenser to expansion valve obstructed.

1. Replace the pipe from the compressor to the condenser.

Op. 5040A50 PIPE FROM AIR CONDITIONING COMPRESSOR TO CONDENSER - R+R

2. Replace the pipe from the condenser to the expansion valve.

Keeping the diagnostic equipment connected, check:

• that there are no errors at the engine management node;
• through active diagnosis, that the compressor engagement relay is working correctly, making sure that, at the same time, the compressor electromagnet coupling is activated.

1. Errors in Engine Management Node.

2. The relay is activated and the coupling does not come on.

3. The relay comes on and the coupling is not activated.

1. Continue as instructed by the diagnostic equipment

2. Move on to Step 8

3. Move on to Step 9

Check the continuity/insulation of the electrical circuit for the compressor engagement relay.

See E6021 COMPRESSOR ENGAGEMENT

1. Electrical connections broken or not insulated.

2. Compressor engagement relay faulty.

1. Restore the continuity/insulation of the electrical connections

See E6021 COMPRESSOR ENGAGEMENT

2. Replace the compressor engagement relay.

Op.

Check the continuity/insulation of the electrical power circuit for the compressor.

See E6021 COMPRESSOR ENGAGEMENT

1. Electrical connections broken or not insulated.

2. Electromagnet coupling faulty.

1. Restore the continuity/insulation of the electrical connections

See E6021 COMPRESSOR ENGAGEMENT

2. Replace the compressor complete with coupling.

Op. 5040A20 AIR CONDITIONING COMPRESSOR - R+R - INCLUDES FLUID LEVEL CHECK AND TOP UP IF NECESSARY

Check that the compressor comes on correctly by carrying out the

See Test 5040BC CHECK ON CLIMATE CONTROL COMPRESSOR ACTIVATION/DEACTIVATION FROM LINEAR SENSOR

1. Electrical connections broken

2. Linear sensor does not give OK

1. Check and, if necessary, restore the continuity/insulation of the electrical connection.

See E6021 COMPRESSOR ENGAGEMENT

2. Replace the linear sensor.

Op. 5040B20 AIR CONDITIONING LINEAR PRESSURE TRANSDUCER - R.R.

Check that the following errors do not persist:

• at the air mixer actuator (after the self-learning procedure);
• at the outside temperature sensor;
• at the passenger compartment temperature sensor;
• at the frost temperature sensor;
• at the treated air sensors.

1. Left air mixture actuator error.

2. Outside temperature sensor error.

3. Passenger compartment temperature sensor error.

4. Error at the demisting sensor.

5. Error at treated air sensors.

1. Move on to Step 12

2. Replace the outside temperature sensor.

Op. 5010D12

3. Replace the climate control system control unit.

Op. 5040D14

4. Replace the frost sensor

Op. 5040B64 SENSOR ON EVAPORATOR FOR A/C ECU - R + R

5. Replace the treated air sensors.

1. The actuator does not turn.

2. Kinematic components or flaps broken/stuck

1. Replace the mixture actuator.

Op. 5040D56 COLLECTION OF ACTUATORS FOR AIR DISTRIBUTION AND MIXTURE FLAPS - WITH DASHBOARD TRIM REMOVED - R.R.

2. Replace the component that is faulty.

Connect the climate control system to the special repressurizing equipment and check the system pressures by carrying out the

See Test 5040OB AIR CONDITIONING SYSTEM OPERATION CHECK (PRESSURE)

1. Gas leak from condenser.

2. O-ring seals puckered.

1. Replace the condenser

Op. 5040A40 AIR CONDITIONING CONDENSER - R+R

and refill correctly.

2. Replace the o-rings and refill correctly.

1. Gas leak from evaporator.

2. O-ring seals puckered.

1. Replace the evaporator

Op. 5040C66 AIR CONDITIONING EVAPORATOR - R+R WITH AIR CONDITIONING CASING REMOVED

and refill correctly

2. Replace the o-rings and refill correctly.

Connect the Examiner diagnostic equipment and check:

• that there are no faults in the outside temperature sensor;
• that there are no faults in the front sensor

1. Error in the outside temperature sensor

2. Error at the frost sensor

1. Move on to Step 5

2. Move on to Step 5

Check the continuity/insulation of the electrical connection:

• of the sensor if there is an error at the outside temperature sensor;
• of the sensor if there is an error at the frost sensor;

Keeping the Examiner diagnostic equipment connected, check:

• that there are no errors at the engine management node;
• through active diagnosis, that the compressor engagement relay is working correctly, making sure that, at the same time, the compressor electromagnet coupling is activated;

1. The relay comes on and the coupling is not activated.

2. The relay comes on and the coupling is not activated.

1. Move on to Step 7

2. Move on to Step 8

1. Electrical connections broken or not insulated.

2. Compressor engagement relay faulty

1. Restore the continuity/insulation of the electrical connections.

2. Replace the compressor engagement relay.

1. Electrical connections broken or not insulated.

2. Electromagnetic coupling faulty

1. Restore the continuity/insulation of the electrical connections.

2. Replace the compressor complete with coupling

Check that the compressor comes on correctly by carrying out the

See Test 5040BC CHECK ON CLIMATE CONTROL COMPRESSOR ACTIVATION/DEACTIVATION FROM LINEAR SENSOR

1. Electrical connections broken

2. Linear sensor does not give go ahead

1. Check and, if necessary, restore the continuity/insulation of the electrical connection.

2. Replace the linear sensor

Op. 5040B20 AIR CONDITIONING LINEAR PRESSURE TRANSDUCER - R.R.

Check that the following errors do not persist:

• at the outside temperature sensor.
• at the frost sensor.

1. Outside temperature sensor error

2. Frost sensor error

1. Replace the outside temperature sensor

Op. 5010D12

2. Replace the frost sensor

Op. 5040B64 SENSOR ON EVAPORATOR FOR A/C ECU - R + R