Electrically heated rear seat
Electrically heated rear seat |
1. |
Check that the fuses for the electrically heated rear seat are intact and live.
|
2. |
Plug in the scan tool and select "READ FAULT CODES" from the menu. If any trouble codes are present, continue on
.
|
3. |
Select "READ SWITCHES" from the menu and then "REAR SEAT HEATER". Read the scan tool display.
Switch activated - " ON " Switch not activated - " OFF " If this is the case, go to point 8. |
4. |
If it is not, check the power supplied to the switch by taking a reading between pin 3 of the switch connector and a good grounding point.
A reading of about 12 V should be obtained. |
5. |
If the voltage is not correct, check the wiring between the fuse and pin 3 of the switch for breaks/shorting.
|
6. |
Connect a jumper lead between pins 2 and 3 of the switch connector and repeat point 3.
If this produces satisfactory results, the fault is in the switch. Change the switch. |
7. |
If this does not work, connect a BOB and check the lead for breaks/shorting by taking a reading between ICE module pin 43 and switch connector pin 2.
|
8. |
Check the heating elements as follows:
|
• |
A 12 V supply should be present between pin 1 of the connector for the heating elements and a good grounding point.
|
• |
The resistance across pin 2 of the connector for the heating elements and a good grounding point should be < 1 ohm.
|
9. |
If point 8 is not correct, check the wiring between the relay and the heating elements for breaks/shorting.
|
10. |
If the readings obtained in point 8 are OK, the fault is in the heating element. Change the heating element.
|