184000471 - J22 DOOR MIRROR DEFROSTING NOT WORKING
With the ignition on, when the appropriate button in the climate control system control panel is pressed, one or both of the door mirrors do not warm up properly| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
| Check that the heated rear windscreen is working properly | Continue to Step 1 | The heated rear windscreen is also not working | See table J20 | |
| 1 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
Connect the diagnostic equipment (Examiner or other instruments) and check CAN network information for
| Continue to Step 5 | Presence of faults | Continue following the instructions for the diagnostic equipment | |
| Driver's/passenger door node not activated | Continue to Step 2 | |||
| 2 | ELECTRICAL EQUIPMENT CHECK (NODE POWER SUPPLY) | All OK | Problems met | Operation |
| Check the condition of the connection between the junction unit under the dashboard and the door node concerned | Continue to Step 3 | Connections broken | Restore the connections See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING | |
| Fuse blown | Replace the fuse after having eliminated the cause of the problem | |||
| 3 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Connect the diagnostic equipment (Examiner Plus or Smart) to the diagnostic socket and check that there are no erros in the Door Node control unit involved | Continue to Step 4 | Presence of errors in the Door Node control unit involved | Continue according to the instructions for the diagnostic equipment | |
| 4 | DOOR MIRRORS ELECTRICAL CIRCUIT CHECK | All OK | Problems met | Operation |
| Check that the connection at the door node for the door mirrors is correct See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING Check that the supply for the mirrors is correct: with the ignition ON and the defrosting button activated, the battery voltage should reach the mirror supply cable | Continue to Step 5 | No power supply from the battery | Restore the correct power supply to the relay. If necessary, replace the faulty components (if a fuse is involved, search for the causes of the problem first) | |
| Connections faulty | Restore the correct connections. See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING | |||
| 5 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | The fault in the left mirror persists | Replace the driver's door node Op. 5505A42 Search for the fault starting from another symptom' | |
| The fault in the right mirror persists | Replace the passenger door node Op. 5505A46 Search for the fault starting from another symptom' | |||
| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
| Check that the heated rear windscreen is working properly | Continue to Step 1 | The heated rear windscreen is also not working | See table J20 | |
| 1 | DOOR MIRRORS ELECTRICAL CIRCUIT CHECK | All OK | Problems met | Operation |
| Check that the door mirrors are connected to earth correctly See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING .Check that the supply for the mirrors is correct: with the ignition ON and the defrosting button activated, the battery voltage should reach the mirror supply | Continue to Step 2 | No power supply from the battery | Restore the correct power supply to the relay. If necessary, replace the faulty components (if a fuse is involved, search for the causes of the problem first) | |
| Connections faulty | Restore the correct connections. See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING | |||
| 2 | RESISTANCE CHECK | All OK | Problems met | Operation |
| Check the continuity of the heated rear window demisting heating element | Continue to Step 3 | Break in the resistance for one mirror | Replace the mirror reflector Op. 7005R35 | |
| 3 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists | Search for the fault starting from another symptom' | |