Question about 1992 Honda Accord
Old post , main or on Mopars, main is called ASD relay
"auto shut down relay" it the anti' crash and burn , relay.
and both relays,for sure cut all fuel and spark.
in fact spark loss, cuts IT. by design by logic in the ECU/PCM
the main relay passes power to the PCM or its major players, fuel and spark.. use a scan tool to see why main drops out.
or if a vary old car (pre 1996' USA ) insert the diagnostic jumper clip
in the the CHECK plug, and see the FLASH out codes.
this tells you after 5 seconds cranking what sensor is bad, for that spark is dead. The 5 second rule works on all EFI cars made.
(its actually crank turns, but the starter rpm makes this unknown)
so 5 seconds handles all cases. Alaska to Key West.
see the FSM pages here
most FSM never explain the logic, its so sad....
Posted on Feb 10, 2014
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Posted on Jan 02, 2017
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