Fuel Delivery and Air Induction: Testing and Inspection

1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.

2. CONNECT TOYOTA HAND-HELD TESTER OR OBDII SCAN TOOL

3. INSPECT FUEL CUT OFF RPM
a. Increase the engine speed to at least 3,500 rpm.




b. Use a sound scope to 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:
M/T 1,000 rpm
A/T 1,200 rpm

4. DISCONNECT TOYOTA HAND-HELD TESTER OR OBDII SCAN TOOL