Visually inspect the isc valve if necessary.

Throttle body inspection and cleaning
Throttle valve synchronizationEvaporative emission control system
inspection (only for e-33)
Refer to “evaporative emission control system removal and installation (only
for e-33)” .
Hose
Inspect the hoses for wear or damage. If it is worn or
damage, replace the hose with a new one.
Note
make sure that the hoses are securely
connected.
Evap canister
Inspect the eva ...
Battery removal and installation
Removal
Remove the front seat. Refer to “exterior parts
removal and installation” in section 9d (page 9d-
6).
Disconnect the battery (–) lead wire (1).
Disconnect the battery (+) lead wire (2).
Note
be sure to disconnect the battery (–) lead
wire (1) first, th ...
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 ...