312000686 - L015 CLIMATE CONTROL NOT HEATING
 | The climate control is working properly and sends air according to the preset flows but this air does not provide the required heating. |
| Test results | ||||
| 0 | PRELIMINARY CHECKS | 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 | 1. Engine coolant level too low.2. Coolant does not circulate correctly: thermostat valve operating incorrectly. | 1. Top up to the correct level Op. 0010T84 COOLANT FOR AIR CONDITIONING SYSTEM - DEHYDRATE AND REPRESSURIZE and check for leaks2. Carry out the See table K025 ENGINE COOLANT TEMPERATURE GAUGE NOT WORKING | |
| 1 | CLIMATE CONTROL SYSTEM CORRECT OPERATION CHECK | All OK | Problems encountered | Operation |
| 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, the fan speed to 10 bars (display) and the distribution to front ventilation.Use the diagnostic instrument 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 | |
| 1 | CLIMATE CONTROL SYSTEM CORRECT OPERATION CHECK | All OK | Problems encountered | Operation |
| With the engine on and the compressor off, in manual mode with the temperature knob at the maximum hot position.Also, set the recirculation button to the closed position, the fan speed to the 3rd setting and the distribution to front ventilation.Use the diagnostic instrument 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 | |
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
Connect the diagnostic equipment and check:
| End of diagnosis | 1. Short circuit error at the air mixing actuator.2. Error at the engine coolant temperature sensor. | 1. Move on to Step 32. Continue as instructed by the diagnostic equipment. | |
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Connect the Examiner diagnostic equipment and check that there are no errors at the engine coolant temperature sensor. | Move on to Step 5 | Error at the engine coolant temperature sensor. | Continue as instructed by the diagnostic equipment. | |
| 3 | ELECTRICAL CIRCUIT CHECK | All OK | Problems encountered | Operation |
| Check whether the electrical wiring connections are loose.Disconnect and carry out a visual check for damage at the connector contacts/reconnect the connection to the actuator. Check the continuity/insulation of the electrical connection:
| Move on to Step 4 | 1. Electrical connections loose or damaged.2. Electrical connection broken or not insulated. | 1. Refit the electrical connections correctly. See E6020 AIR CONDITIONING 2. Restore the continuity/insulation of the electrical connection. See E6020 AIR CONDITIONING | |
| 4 | CHECK ON CORRECT OPERATION USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Check for persistent errors in the mixer actuator. | End of diagnosis | Air mixing actuator error. | Move on to Step 5 | |
| 5 | CHECK ON CORRECT OPERATION OF MIXER ACTUATOR KINEMATIC COMPONENTS | All OK | Problems encountered | Operation |
| 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, following the See Test 5040DH SEQUENTIAL PROCEDURE FOR CHECKING MIXTURE AND DISTRIBUTION ACTUATOR OPERATION | Move on to Step 6 | 1. Incorrect operation of actuator2. Physical impediment to the rotation of the flap.3. Incorrect operation of actuator from control on climate control system control unit. | 1. Replace the mixer actuatorOp. 5040D56 2. Replace the control unit.3. Replace the climate control system control unitOp. 5040D14 | |
| 5 | CHECK ON CORRECT OPERATION OF MIXER ACTUATOR KINEMATIC COMPONENTS | All OK | Problems encountered | Operation |
| Visually check the correct operation of the mixer actuator from the climate control unit temperature control knob. | Move on to Step 6 | 1. Incorrect operation of actuator.2. Physical impediment to the rotation of the flap. | 1. Replace the mixer actuatorOp. 5040D56 2. Replace the control unit. | |
| 6 | AIR MIXER ACTUATOR FLAP CHECK | All OK | Problems encountered | Operation |
| Check that the air mixer actuator flap completes its travel without any impediment. | End of diagnosis | 1. Flap travel incomplete.2. Flap damaged.3. Kinematic components/gears damaged. | 1. Free the air mixer actuator flap from the impediment2. Replace the flap.3. Restore kinematic components correctly. | |