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SF-49
SFI (1GR-FE) - ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
SF1Z0-01
ON-VEHICLE INSPECTION
1. INSPECT INTAKE AIR CONTROL FUNCTION
VSV for ACIS Intake Air Control Valve
A23225
(a) Remove the V-bank cover.
(b) Connect the hand-held tester to the DLC3.
(c) Perform the ACTIVE TEST, then check that the actuator rod operates.
(d) Start the engine.
(e) Check that the VSV for ACIS is ON under the following conditions:
S Depressing the accelerator pedal to 60% accelerator opening angle.
S Racing the engine above 4,700 rpm.
(f) Check that the VSV for ACIS is OFF under the following conditions:
S The engine idling.
S Release the accelerator pedal from the condition of step (e).
SF-50
SFI (1GR-FE) - ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
2. INSPECT INTAKE AIR CONTROL VALVE
3-way Connector
(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.
A23226 (g) Reinstall the V-bank cover.
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
Ohmmeter Continuity 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 at 20_C (68_F)
A23228
Ohmmeter No Continuity
(b) Inspect the VSV for ground.
Using an ohmmeter, check that there is no continuity be-
tween each terminal and the body.
A23229
SF-51
SFI (1GR-FE) - ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
Air
(c) Inspect VSV operation.
(1) Check that air flows from port E to the filter.
E
Filter
A23230
(2) Apply battery voltage across the terminals.
Air (3) Check that air flows from port E to port F.
E
F
A23231
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