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Avoca, MN | Thats the exact same problem i had. There is no can bus communication between your display and the mobile processor. I did not have an ISO implement connector at the back of the tractor only a plastic box that looked like one. Check for power to ground at your ISO connector. Two of the four large pins should have 12 volts with key on. One of the small pins should have 12 volts and two of them should have about 2.5 volts. Looks like you have a connector between back of the cab and the ISO connector make sure its not disconnected there. Your keycard and processor should be ok you have a can buss problem. Good luck.
Also check the voltage to cab ground of mobile processor connector with key on.
pin K to ground = 12 volts
pin H to ground = 2.5 volts (can H)
pin D to ground = 2.5 volts (can L)
pin C = 0 volts (ground wire)
pin J = 12 volts
Edited by MnBob 3/2/2009 17:31
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Out Back GPS signal with Original Green Star display
