




Self-diagnostic proceduresDTC “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 ...
Cylinder head disassembly and assembly
Refer to “engine top side disassembly” .
Refer to “engine top side assembly” .
Caution
identify the position of each removed part.
Organize the parts in their respective groups
(i.E., Intake, exhaust, no. 1 Or no. 2) So that
they can be installed in their original
locations ...
DTC “c40” (p0505 / p0506 / p0507): isc
valve circuit malfunction
Detected condition and possible cause
Detected condition
Possible cause
C40/P0505
The circuit voltage of motor drive is
unusual.
Isc valve circuit open or shorted to ground.
Air passage clogged.
Isc valve is fixed.
Isc valve prese ...