climate control not working PLEASE help

[NsxKing]

i have no lights on at all on climate control, relay has power , but cannot get any heat or ac , no lights at all so therefore blower will not come on , if i jump a wire at relay blower comes on but still climate control will not light up .

what could possibly be the problem ?

 

[Briank]

Very common problem, your CCU needs repair, PM me or
Email [email protected].

 

[NsxKing]

i have many climate control units and switched it 2 or 3 times and it still doesnt work

 

[Briank]

Are you swaping it with a known good unit?

 

[Briank]

Are you having any ALB issues? Check fuse #4

 

[NsxKing]

all fuses are fine , it seems no pwer is going to climate control., unkown why ?

 

[Briank]

#4 provides power to the CCU so if its good then you have to check at the CCU with a meter/test light. #4 also supplies power to the ABS so you would be having problems with that also if it was blown.

The CCU going dark is a common problem what year is the car and are you swaping it with known good unit (removed working from a another car)?

 

[NsxKing]

th ecar is a 2003 and all the climate controls work in other nsx's im stumped with this problem.

 

[Briank]

Have you checked for power at the unit? Power on yellow/black pin 27 and 28 on the 30 pin conector and ground on the black wire pins 24 - 25.

 

[NsxKing]

i checked and there is no pwer at all.

 

[Briank]

There has to be power on at least one wire.

There are 3 power feeds are you checking with the ignition switch on? White/yellow wire pin 15 is on all the time clock fuse #33. Yellow/black to pins 17-18 are on with with the ignition fuse # 4 and red/black pin 4 fuse #38 is on with the head/tail lights.

Sorry about the pin number changes, the numbers on the ccu board are reversed from the connector pin numbers. You have to look at the wire colors.