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Hi, i have been chasing a misfire issue due to a bad ground and decided to look at my ecu and follow ground wires throughout the car and see that this green clip has been completely disconnected, I am wondering what this does or what its purpose is and if it is sipposed to be connected or stay disconnected, I will insert the pic of them down below.
 

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That is the "test mode connector". It is normally unplugged. If you turn the ignition to ON with it connected and with out starting the engine, you should hear the radiator fans run and relays cycle.
 

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That is the "test mode connector". It is normally unplugged. If you turn the ignition to ON with it connected and with out starting the engine, you should hear the radiator fans run and relays cycle.
Alright thank you, just wanted to make sure. I have heard a lot of I thinks and i may do and just wanted to make sure.
 
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