87 A/C(c68)speed blower fan

[reynald leclerc]

Hi,my 87 Corvette equipped with RPO C68 (electronic climate control), i read the system diagnostic codes ,and i want to know a value code,please.
because the problem is; my blower motor fan run at maximun speed when i press button "low vent or max vent" the speed of blower motor fan does not vary

thank you for your assistance

 

[First C4]

You fix this yet or can I still help

 

[reynald leclerc]

the problem is always. and I will need assistance, thank you.

 

[First C4]

What it the code you are getting? I am becoming well versed in the C68 because of my own troubleshooting. I may be of some help.

 

[reynald leclerc]

I read the code like that:i press extern temp button and old,and press Auto button and release , the code is 09


I made other handling too ,and read the canal value:
on full auto position
-1 is 183
-2 167
-3 86
-4 00
-5 122
-6 27
-7 29
-8 00
-9 82

I started again on the manual position,but it only canal which does not have to change is (-8 )always value 00.