Toyota Tundra 2005 Service - Repair - Maintenance page 1924

SF−50
3−way Connector
Ohmmeter Continuity
Ohmmeter
No Continuity
SFI (1GR−FE) − ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
2. INSPECT INTAKE AIR CONTROL VALVE
(a) Remove the V−bank cover.
(b) Using a 3−way connector, connect the vacuum gauge to
the actuator hose.
(c) Start the engine.
(d) While the engine is idling, check that the vacuum gauge
needle momentarily fluctuates up to approx. 39.9 kPa
(300 mmHg, 11.8 in.Hg). (The actuator rod is pulled out.)
(e) Rapidly and fully depress the accelerator pedal and
check that the vacuum gauge needle points to 0 kPa (0
mmHg, 0 in.Hg). (The actuator rod is returned.)
(f) Remove the vacuum gauge, and connect the vacuum
hose to the actuator.
(g) Reinstall the V−bank cover.
A23226
3. INSPECT INTAKE AIR SURGE TANK
Inspect the diaphragm.
(1) Check that the lever moves when a vacuum of 26.6
kPa (200 mmHg, 7.9 in.Hg) is applied with the MI-
TYVAC (hand−held vacuum pump) on.
(2) Check that the vacuum of 26.6 kPa (200 mmHg, 7.9
in.Hg) is sustained for 1 minute in the above state.
A23227
4. INSPECT VSV FOR ACIS
(a) Inspect the VSV for on open circuit.
Using an ohmmeter, check that there is continuity be-
tween each terminal.
Resistance: 33 to 39 Ω at 20_C (68_F)
A23228
(b) Inspect the VSV for ground.
Using an ohmmeter, check that there is no continuity be-
tween each terminal and the body.
A23229