Toyota 1 MZ–FE Manual page 310

EG2–310
1MZ–FE ENGINE – SFI SYSTEM
FUEL CUT RPM
FUEL CUT OFF INSPECTION
1. REMOVE V– BANK COVER
Using a 5 mm hexagon wrench, remove the 2 cap nuts
and V–bank cover.
2. WARM UP ENGINE
Allow the engine to warm up to normal operating
temperature.
3. CONNECT TACHOMETER TO ENGINE
Connect the test probe of a tachometer to terminal IG
(1) of the DLC1.
NOTICE:
NEVER allow the tachometer terminal to touch
ground as It could result in damage to the igniter
and/or ignition coil.
As some tachometers are not compatible with this
ignition system, we recommend that you confirm
the compatibility of your until before use.
4. INSPECT FUEL CUT OFF PRM
(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:
1,200 rpm
5. DISCONNECT TACHOMETER
6. REINSTALL V–BANK COVER
Using a 5 mm hexagon wrench, install the V– bank
cover with the 2 cap nuts.
HINT: For fixing the V– bank cover, push on the cover
until sense of "click" is felt.