First thing to test is if the vehicle is locked from programming. To do this, disconnect the EVO, turn the first key ON-OFF, then repeat for the second key. Re-insert the first key and turn On-Off, the door locks should lock or unlock. If the doors do lock/unlock then you are good to go fro programming more keys to the vehicle. If they do not lock/unlock, then the vehicle is locked from key programming.
So... if you passed the previous test, try these simple tests one by one.
Make sure you have the most recent Ford firmware.
1- Master reset the EVO and also make suire you have the latest Ford firmware installed on the EVO.
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Hold down programming button while plugging in datalink connector.
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Let go of button when LED is RED.
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Push and hold button again until all three LEDs start to alternate.
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Disconnect unit, she is now reset.
2A- Start the programming on the second part . Don't bother with the first section. Can-Bus gets progammed at the end of the second part anyway.
2B- Instead of using the first key a second time at the end of programming. Push on the programming once, don't bother reinerting any key at the end of programming.
3- While programming keep an eye on the RED LED.
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As soon as a key is inserted, the YELLOW LED will turn on. This confirms proper connections on the yellow wire.
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The RED LED will flicker when turning the key on to confirm proper Tx and Rx connections (which are the light blue and light blue/black of the EVO and T-Harness.