RV125K7 (’07-MODEL) 71
“40” (P0505) ISC VALVE CIRCUIT MALFUNCTION
INSPECTION
Step 1
1) Turn the ignition switch OFF.
2) Check the ISC valve coupler 1 for loose or poor contacts.
If OK, then check the ISC valve resistance.
3) Disconnect the ISC valve coupler.
4) Measure the ISC valve resistance.
ISC valve resistance: Approx. 35 Ω
(Terminal – Terminal)
DETECTED CONDITION POSSIBLE CAUSE
40
(P0505)
When the ISC operation voltage
remains at 1.0 V or lower continuously
for 2 sec. or longer.
Idle speed is higher than the normal
condition.
• ISC valve circuit open or shorted to ground
• ISC valve malfunction
• ECM malfunction
Ignition SW
ECM
B/O
To regulator/rectifier
ISC valve
Battery
20 A
ISC
Y/R
1
1
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