cd head unit power

[puddles]

Can anybody tell me how to test the head unit. I have a 1991 hdj81vx JDM I received it a few months back but the radio/cd unit never ever turned on, appears that there is no power to the unit at all. I checked the fuses, but continuity was fine. I pulled the unit, can anybody tell me how to test to see if it is the unit or what pin on the connectors to test to see if power is getting through. Picture of the front of the unit attached. More can be provided if needed.

The unit is a cd/cassette player Toyota 86120-2A220 FH-8836zt made by Pioneer Electronic Corp..
Thanks

 

[haffi]

Are you sure all the fuses are ok?

The radio is using the same acc. powered fuse as the cig. ligther. The fuse is located in the fuse box inside the car.

I also think the radio uses the dome fuse located in the fuse box under the hood, next to the battery.

 

[puddles]

Checked both fuses they look good also tested continuity through the fuses and that was fine. Other ideas, or pin out descriptions so I can test power directly at the connector harness to the radio.

 

[Ted44]

Did you check the security code?

If the power has been disconnected from the unit, it will not operate when the power is restored until the security code is entered.

 

[puddles]

I am not sure regarding the security code, I would assume though that it would need to at least power up to enter the security code or am I wrong? I get absolutley nothing when I try to turn the unit on, it is as though it was not even getting power.

I finally found a connector diagram and tested the power between ground and the battery which gave me 12+ volts and when I started the vehicle I tested between ground and ignition and had 13+ volts. So it appears to me that the unit is dead because it should be getting power. I have attached a connector diagram incase anyone else is interested.

I also tried to hot wire the head with a direct connection to a battery between ground and battery and ignition and nothing so i assume the head is dead.

If anybody has any other comments I would be interested thanks

 

[puddles]

forgot attachment, here it is