during programming at the end all three led lights are flashing

Question

2004 infiniti i30 cheched all wiring good. solders have good connections. soild clean groung. use connection one and program 1 good power source and ground. will not take program. at the last step all the light flash together. dont know why?

Answer 1

all 3 leds flashing together means the the unit lost power or ground and has reset, 3 flashes means that the bypass module has not been programmed yet to a vehicle during power-up.

 

Please put a digital voltmeter on the red and black wires of the 4 pin datalink connector, 12v should not at any time drop out on while connected to these wires.

Comments

I've got exactly same problem. Power is constantly on on black connector, but led's ceep flashing together

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leds will flash like that when a module is not programmed to car or if it's not even flashed with firmware.