Quote:
Originally Posted by mlfun
The bulletin you posted covered all ML's 2000 - 2005.
What is circuit 15 ?
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Circuit 15 pertains to the circuit 15 relay. Another name for it is the power distribution relay, in that after it is activated it powers up many fuses and modules.
Circuit 15 relay is constantly power by battery voltage and is permanently grounded, but is only activated after the AAM sends power to the coil side of the relay, after the AAM is powered up by the #15 prong on the ignition switch.