Pin 16 at the datalink connector, should be hot all the time. Check with voltage tester. If that pin isn't hot, scanner won't work. Have you checked for any voltage at the fuse box? Some fuse circuits are hot all the time, some go hot with the key on. You may have to track Battery B+ voltage.

Answered by JDL (expert)
14,417 answers provided

Pin 16 gets voltage from the fuse in the picture.

Answered by JDL (expert)
14,417 answers provided

It is at a garage, and has the mechanic stumped also. No testing of the fuse box has been done other than visually checking the fuses. The starter can be jumped with a screwdriver, but it won't start the vehicle. Also when you try to start it by the key, the everything in the car that has power, loses it.

Response from jwplaster
1 question asked

Thanks for the reply by the way. Are there any inline fuses that I should look for? I will check the fuse panel under the dash and the one under the hood again in the morning. What I meant in my previous post is that although everything inside the vehicle has power when the key is on, it goes off when you turn the key to start.

Response from jwplaster
1 question asked

Note the diagram, check the fuses for voltage.

Answered by JDL (expert)
14,417 answers provided