Fuel Control System; Inspection Of Injectors; Inspection Of Isc Valve - TOHATSU MFS25 Service Manual

5. Fuel Control System

1) Inspection of Injectors

1. Measure injector resistance.
• This test can be made without removing parts.
• Injector operation test can be made by using
"Function, or Running (Drop) Stop Test" of
diagnosis system.
Injector Resistance (Reference Value) : (at 20°C)
11.1 to 12.3 Ω

2) Inspection of ISC Valve

1. Connect vacuum/pressure gauge to ISC valve.
2. Apply specified vacuum pressure to ISC valve.
Vacuum/Pressure Gauge :
P/N. 3AC-99020-0
Specified Vacuum Pressure :
0.069 MPa ( 10psi ) [ 0.7kgf/cm
3. Check, when battery voltage is applied to ISC valve terminal
1, that valve opens and vacuum pressure is released.
This test can be made without removing parts.
4. Measure ISC valve resistance.
ISC Valve Resistance (Reference Value) : (at 20°C)
24.0 to 30.0 Ω
ISC valve operation test can be made by using
"Function Test" of diagnosis system.
25/30 2006
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