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Forum: Diesel Discussion

07-05-2005, 09:06 PM

Replies: 11

trouble shooting the switch control unit

Views: 1,463

Posted By sixto

That's a Klima relay. I don't know if it's the...

That's a Klima relay. I don't know if it's the right one for an 85 TD.

Looking at the pins in that image:

Upper row left to right:

GM+ = engine rpm
VL = WOT switch
87K = AT kickdown...

Forum: Diesel Discussion

07-05-2005, 05:08 PM

Replies: 11

trouble shooting the switch control unit

Views: 1,463

Posted By sixto

Connector 1 pin 6, the black wire with red...

Connector 1 pin 6, the black wire with red stripe. I don't know which is connector 1 (left or right).

I led you astray in the previous post. In an 85 the relay is not a simple coil and switch...

Forum: Diesel Discussion

07-05-2005, 02:31 PM

Replies: 11

trouble shooting the switch control unit

Views: 1,463

Posted By sixto

In defrost, total ventilation and normal modes...

In defrost, total ventilation and normal modes the PBU sends +12V to the ETR which opens below 40*F.

Sixto
95 S420
87 300SDL

Forum: Diesel Discussion

07-03-2005, 12:37 AM

Replies: 11

trouble shooting the switch control unit

Views: 1,463

Posted By sixto

The compressor relay coil is powered through the...

The compressor relay coil is powered through the evaporator temp switch. Power to the compressor comes directly from a fuse.

Sixto
95 S420
87 300SDL

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