Testing coil pack and injector wiring harness... Please advise

[Maxmil982]

2005 Altima 3.5 SE


I'm in the process of replacing the EGI engine harness due to a short in the old wiring harness that kept frying the ECM. While replacing the harness I've noticed there are two small sub harnesses that connect the injectors and coil packs to the engine harness. Anyone know a way to verify there is no short in the small harnesses so I can reuse them?


Also a way to test that the coils packs themselves are not shorted out? 

[Rcypert]

Use a multimeter for the coils. They should have resistance if there is 0 or OL (open loop) then there is a short or a break in the internal windings. Use the continuity setting for checking the harnesses fir broken wires. Any shorts in the harness could also be found using the resistance setting and making sure each wire has OL resistance to every other wire.

[Rcypert]

It’s easier to get a spark tester and check your coils that way. It’s like an 8$ tester.