O20 Front seat heating not working
- Make
- Alfa Romeo
- Model
- 147 Factory Service Manual
- Year
- 2000–2002
- Section
- Seats › O20 Front seat heating not working
O20 Front seat heating not working
With panel on, seat heat pads do not work.
| Step | Test procedure | Result | Action |
|---|---|---|---|
| 0 | PRELIMINARY CHECKS Check whether the heat pads have been deactivated by means of the switches at either side of the seats. NOTE: Device operation is automatically shut off at a certain temperature by a thermal contact located inside the device | OK | |
| Switch in OFF position |
End of diagnosis | ||
| Switch in ON position | |||
| 1 | CHECKING HEAT PAD POWER SUPPLY Check the heat pad connectors are properly supplied with power Wiring diagram E3075 HEATED SEATS | OK | |
| No supply |
End of diagnosis | ||
| 2 | CHECKING SWITCH OPERATION Disconnect the switches and check their efficiency using a Tester | OK | |
| Switches not working properly |
End of diagnosis | ||
| 3 | CHECKING HEAT PAD POWER SUPPLY Remove the seat trim and check the heat pads are in good condition | OK | |
| Cushion heat pad damaged |
End of diagnosis | ||
| Squab heat pad damaged |
End of diagnosis | ||
| 4 | CHECKING CORRECT OPERATION Check that the fault is no longer present | OK | Incorrect selection of diagnostic procedure |
| Fault persists | Incorrect selection of diagnostic procedure |
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