HVAC CU (H01) Wiring help

[Hobbes]

I am repining the wires from a H01 to a H02 HVAC CU. In this conversion Plugs A and C are not used.

On the body side, I have wiring for the H01 HVAC CU from a 2000 996 with four color plugs:

1 Black (large) - Connector D

1 Black (small) - Connector A

1 Beige - Connector C

1 Red - Connector B

For H01: According to the schematics, the 'Output Sensor Footwell', from connector B is pin #5. This wire is suppose to go into connector B, pin #7. The color of this wire is suppose to be BK (black), however there are no black wires in any of the connectors from the body side. After repining to the H02 HVAC CU, there are four wires from the H01 that remain homeless:

GY/GN

YE/RD

YE/BL

WT/GN

One of these four wires makes sense to be the output sensor footwell wire, but the colors don't jive. Can someone set me straight? Did Porsche decide to do something different, but not update the schematics?

The attached schematic portion in question is from the H01 (2000 Porsche HVAC CU).

Thanks...

[987_RDC]

Perhaps you can use a multimeter to discover which one shows a resistance to ground that would jive for a thermresistor. If you know where the footwell sensor is then maybe blast with hairdryer and see which wires changes?

Measure the one on the bumper as the outside temp sensor to get an idea for the range?

Did you go through the 2000 HVAC Schematic and find all other sensors except the footwell one?

Edited May 28, 2014 by 987_RDC

[Hobbes]

Perhaps you can use a multimeter to discover which one shows a resistance to ground that would jive for a thermresistor. If you know where the footwell sensor is then maybe blast with hairdryer and see which wires changes?

Measure the one on the bumper as the outside temp sensor to get an idea for the range?

Did you go through the 2000 HVAC Schematic and find all other sensors except the footwell one?

Yes, all other of the pins matched up to the new wiring except the footwell,. I think I will have to do the multimeter test to find this one out.

[987_RDC]

Curious what the other 3 wires are!

Edited May 28, 2014 by 987_RDC