Fuel Cut Rpm - Toyota 3S-GE Repair Manual

ENGINE — EFI SYSTEM EG-293
SW20
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FUEL CUT RPM
FUEL CUT PRM INSPECTION
1. WARM UP ENGINE
Allow the engine to warm up to normal operating
temperature.
2. CONNECT TACHOMETER TO ENGINE
ST202 .
Connect the test probe of a tachometer to terminal IG
Tachometer Q of the check connector.
Gii
Check Connector
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IG@ /A
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Bat
Tachometer
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I-0
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Ti
Bane
PISIGZ
H5722 Check) Connector 213034
NOTICE:
I Never allow the tachometer terminal to touch
ground as it could result in damage to the igniter
and/or ignition coil.
I As some tachometers are not compatible with this
ignition system, we recommend that you confirm
the compatibility of your unit before use.
3. INSPECT FUEL CUT RPM
2500 'pm (a) Increase the engine speed to at least 2,500 rpm.
o
RPM
Tachometer
P02460 212789
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I
Sound
Scope
Y P1778?
(b) Using a sound scope, check for injector operating
noise.
(c) Check that when the throttle lever is released, injector
- operation noise stops momentarily and then resumes.
HINT: Measure with the A/C OFF.
Fuel return rpm:
1.500 rpm
4. DISCONNECT TACHOMETER