12 volts on 5 volt referanc

I have 95 camaro v6. Noticed 12 volts.o. 5 volt refeance. Injectors cam and crank sensors. Pulled computer..have 12 volts neg coming threw injector fuses on fuse panel under hood. Among other fuses in that line on box. Working with just test light and voltage meter. Can anyone give me any direction. Can't find complete wire diagram on interned. Any help? Thanks a million. 

Noticed 12 volts.o. 5 volt refeance. Injectors cam and crank sensors.

Injectors do not use the 5 volt ref. They should get battery voltage from fuses 9 & 10, on the PINK wire. The other wire is a unique colored control wire that goes to the PCM. With the Key On Engine Off, you should see the battery voltage on this wire, too, when the injector is connected. The battery voltage should go away if you disconnect the injector. (you may read a lower bias voltage with the connector disconnected.)

The Cam and Crank sensors do not use the 5 volt ref, either. They use a 7 volt ref that comes from the ignition control module. The other two wires should be a battery voltage and ground, from the ignition control module.


 




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