Quote
Here is a trick that i use to test a transistor for any ECM controlled circuit. Remove the ignition fuse to the ECM. Place an ammeter in place of the fuse. disconnect the componenent (relay, motor etc.) Turn the key on. The meter should read between 4mA to 40mA depending on the transistor and its circuit.


So if the ECU is blown, the ammeter would read zero? Is that the idea? If so, you wouldn't know which component was blown, though, would you?

Also, couldn't there still be current draw if one section of an ECU was open and another working correctly?

I've never seen the circuit diagram of an ECU, but did have my spare one apart to look at the board - didn't count the components, though.

Oh - the chopper's back-ordered. <img src="/forums/images/graemlins/lol.gif" alt="" />

Frank

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