Re: Now that the seat is apart...(heater)

[i6941TB@gnn.com]

Myke sez:

>Thanks to posts by J. Zwahlen, I. Kessel,  and S. Siblock (sorry if I've
>forgotten anyone), regarding seat heater repairs, I tackled mine today.

You are welcome

>Near the back of the seat, there are 4 wires soldered in a row, to the
>heating element. Does anyone know or recall resistance readings for these.

This info concernes my '89 200TQ:

For LF:
Two of them are connected to a heating element: 
BLK/YEL to BRN/BLU = 1ohm
Two of them are connected to a thermister, that controlls the pre-set:
BLK/WHT to BRN/BLK = 8.2k cold

For RF:
Two of them are connected to a heating element:
BLK/RED(x2) to BRN/BLU = 1ohm
Two of them are connected to a thermister, that controlls the pre-set:
BLK/GRN to BRN/WHT = 8.2k cold

Note: the RF seat also provides current for BOTH rear seats (via the second 
BLK/RED wire)

> I get a 10 ohm reading on the 2 innermost wires,

I think, you meant 10k, those wires are for the thermistor.

>and no reading on any other combination.

sure, the heating element is burnt

>On the backrest I get a zero ohm reading.

Should be on LF and RF both: BRN/BLU to BRN = 1ohm
 

Igor