| 0 | PRELIMINARY CHECKS | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that neither the defrosting of the rearscreen or the rear view mirrors is working. | Move on to Step 1 | 1. Only the rearscreen is not working. | 1. Proceed as instructed in the, See table J021 HEATED REAR WINDSCREEN NOT WORKING |
| 2. Just the rear view mirrors are not working. | 2. Proceed as instructed in the, See table J022 DOOR MIRROR DEFROSTING NOT WORKING |
| 1 | DEFROSTING FUNCTION ON LED CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| When the button in the climate control system panel is pressed, check whether the LED in the actual button comes on to signal that the function is working. | Move on to Step 2 | Defrosting LED fails to come on. | Restore the connection between the climate control system control unit and services control unit See E3020 WINDSCREEN WASH/WIPE Move on to Step 3 |
| 2 | DEFROSTING ELECTRICAL CIRCUIT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the following, in order:- Heated rear windscreen fuse;
- Heated rear windscreen relay;
- Connection between heated rear windscreen relay and services control unit;
- Services control unit power supply
See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING | Move on to Step 3 | 1. Connections not correct. | 1. Restore the correct connections. |
| 2. Component defective. | 2. Replace the component involved (in the case of a fuse, find out what caused it to blow). |
| 3 | SERVICES CONTROL UNIT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that the services control unit is working properly: in particular, the control function for the rear windscreen and rear view mirrors defrosting Op. 5505 INSTRUMENT/GAUGE ELECTRICAL CIRCUITS | End of diagnosis | Services control unit not working. | Replace the services control unitOp. 5505A18 MULTI-FUNCTION CONTROL UNIT - R R |
