gen 4 ecu codes

Rahvin

New member
Hey i just did a gen 4 3sgte engine conversion and did the wiring my self. now i want to know if there is a way to check fault codes just by using the wires out of the ecu as i didn't wire in the check connector. can anyone help me with this please.
 

alltracman78

Active member
Yes, all you need to do is ground one of the wires from the ECU.
Off the top of my head I don't remember exactly which wire on the 4th gen.
Off the top of my head on older ones it can be either Tc, TE, TE1 or TE2.
 
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