Electrically heated rear seat

Check that the fuses for the electrically heated rear seat are intact and live.

Plug in the scan tool and select "READ FAULT CODES" from the menu. If any trouble codes are present, continue on

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.

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.

If it is not, check the wiring between the fuse and pin 3 of the switch for continuity/shorting.

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.

If it does not, connect a BOB and check the lead for continuity/shorting by taking a reading between ICE module pin 43 and switch connector pin 2.

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.

If the readings obtained in point 8 are not OK, check the wiring between the relay and the heating elements for continuity/shorting.

10.

If the readings obtained in point 8 are OK, the fault is in the heating element. Change the heating element.