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Engine sprocket removal and installationDTC “c42” (p1650): ig switch circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
Ignition switch signal is not input to the ecm.
Ignition system circuit open or short.
Ecm malfunction.
When the id agreement is not verified.
Ecm does not re ...
Procedure for returning
to service
Clean the entire motorcycle.
Remove the oily rags from the
air cleaner intake and muffler
outlet.
Drain all the engine oil. Install
a new oil filter and fill the
engine with fresh oil as outlined
in this manual.
Remove the spark plugs. Turn
the engine a few tim ...
Regulator / rectifier inspection
Inspect the regulator/rectifier in the following procedures:
turn the ignition switch off.
Disconnect the regulator/rectifier couplers. Refer to “regulator /
rectifier removal and installation” .
Measure the voltage between the terminals using the multi-circuit
tester ...