Fuel Cut Control Unit: Testing and Inspection

1. REMOVE V-BANK COVER




a. Using a 5 mm hexagon wrench, remove the 2 cap nuts.
b. Disconnect the 2 clips, and remove the V-bank cover.

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




3. CONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL
a. Remove the fuse cover on the instrument panel.
b. Connect the TOYOTA hand-held tester or OBD II scan tool to the DLC3.
c. Please refer to the TOYOTA hand-held tester or OBD II scan tool operator's manual for further details.

4. 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: 1,400 rpm

5. DISCONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL
6. REINSTALL V-BANK COVER

HINT: For fixing the V-bank cover, push on the cover until a "click" is felt.