3360296 - L01 CLIMATE CONTROL NOT WORKING / UNDER NO CIRCUMSTANCES
When the appropriate on/off button is pressed, the climate control sytem does not work. | The climate control system Node power supply is protected by specific fuses housed in the facia control unit and engine bay control unit, and governed by a relay housed in the engine bay control unit. |
| Results of the tests | ||||
| 0 | PRELIMINARY CHECK | All OK | Problems met | Operation |
|---|---|---|---|---|
Verify:
| Continue to Step 1 | Fuses blown | Change blown fuses | |
| Relays damaged | Change relay | |||
| Pressure not correct | Eliminate any leaks and top up the climate control system. Op. 5040A10 | |||
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
Connect an Examiner and check for errors:
| Continue to Step 4 | Climate control system node not working. | Continue to Step 2 | |
| CAN line error. | Continue following the instructions for the diagnostic equipment. | |||
| Compressor control output not working. | Change the climate control system Node Op. 5040D18 | |||
| 2 | CHECKING ELECTRICAL CIRCUIT | All OK | Problems met | Operation |
| Check the climate control system node power supply See E6020 AIR CONDITIONING | Continue to Step 3 | No power supply | Restore broken electrical connection See E6020 AIR CONDITIONING | |
| 3 | CHECK ELECTRICAL CONNECTIONS | All OK | Problems met | Operation |
| Check the electrical connections for the climate control system node, in particular making sure that each individual pin is correctly connected and inserted in its housing. | Continue to Step 4 | Electrical connections not working. | Restore damaged electrical connection. | |
| 4 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Keep the Examiner connected and check the engine control Node for errors in the compressor control relay. | Continue to Step 5 | Relay not working. | Change compressor control relay | |
| 5 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| 1.2 16v 1.6 16v 1.8 16v 2.4 20v | Keep the Examiner connected and check the engine control Node in parameter mode for:
| Continue to Step 6 | no air conditioner activation request received. | Replace engine management control unit Op. 1056B82 |
| 1.9 JTD 8v | Keep the Examiner connected and check the engine control Node in parameter mode for:
| Continue to Step 6 | no air conditioner activation request received. | Replace engine management control unit Op. 1060G80 |
| 6 | COMPRESSOR ENGAGEMENT CHECK | All OK | Problems met | Operation |
| Check compressor is properly activated by See Test 5040BC Check activation/deactivation of climate control compressor from linear sensor | Continue to Step 7 | Compressor will not come on | Check electrical connection continuity/insulation and repair if necessary. See E6021 COMPRESSOR ENGAGEMENT | |
| 7 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | Continue to Step 8 | Fault persists | Change linear sensor | |
| 8 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | Fault persists | Search for the fault starting from another symptom' | ||