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this is for my fit...but its a similar engine to the r18, so i figured id ask.
i changed my battery back from odyssey pc680 to the OEM battery. car was running fine with the pc680. went to start the car when i was done and it woudlnt start. everything in the car is working...except there is no spark. (after cranking i connected my scanner to see if there was any codes...p1103 map sensor high...i cleared it and no codes have returned since)
i tested EVERY fuse, all are good.
checked for voltage at the wires feeding the coils (white wires with stripes) and there is no power when cranking the engine.
bypassed my AEM FIC to eliminate that as a problem, still no spark.
checked voltage at the ignition wires on the steering column, they have power too.
im at a loss.
im 99% sure the coils are fed directly from the ECU, but i find it hard to believe that the ecu is fried from simply changing a batterry. wires never crossed, no sparks, nothing like that.
is there somthing im overlooking?
i know a bad crank sensor would have similar symptoms..but id find it a huge coincidence if that went bad doing a battery swap.
trying to avoid bringing it to honda cause it turboed and has a piggyback... theyll probly f*** more s*** up than fix it. and they want almsot $600 for a new ECU+programming..so thats my last resort.
here is a link to the jdm fit ignition wiring diagram. it is mostly the same except the US fit only has 4 coils/plugs....so just ignore the 4 front ignition coils.
Wiring Diagram
i changed my battery back from odyssey pc680 to the OEM battery. car was running fine with the pc680. went to start the car when i was done and it woudlnt start. everything in the car is working...except there is no spark. (after cranking i connected my scanner to see if there was any codes...p1103 map sensor high...i cleared it and no codes have returned since)
i tested EVERY fuse, all are good.
checked for voltage at the wires feeding the coils (white wires with stripes) and there is no power when cranking the engine.
bypassed my AEM FIC to eliminate that as a problem, still no spark.
checked voltage at the ignition wires on the steering column, they have power too.
im at a loss.
im 99% sure the coils are fed directly from the ECU, but i find it hard to believe that the ecu is fried from simply changing a batterry. wires never crossed, no sparks, nothing like that.
is there somthing im overlooking?
i know a bad crank sensor would have similar symptoms..but id find it a huge coincidence if that went bad doing a battery swap.
trying to avoid bringing it to honda cause it turboed and has a piggyback... theyll probly f*** more s*** up than fix it. and they want almsot $600 for a new ECU+programming..so thats my last resort.
here is a link to the jdm fit ignition wiring diagram. it is mostly the same except the US fit only has 4 coils/plugs....so just ignore the 4 front ignition coils.
Wiring Diagram