Variable Induction System: Testing and Inspection
INTAKE AIR CONTROL SYSTEMON-VEHICLE INSPECTION
1. INSPECT INTAKE AIR CONTROL FUNCTION
a) Remove the V-bank cover.
b) Set 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 condition.
^ Depressing the accelerator pedal to 60% accelerator opening angle.
^ Racing the engine above 4,700 rpm.
f) Check that the VSV for ACIS is OFF under the condition.
^ The engine idling.
^ Release the accelerator pedal when the condition of step (e).
2. INSPECT INTAKE AIR CONTROL VALVE
a) Remove V-bank cover.
b) Using a 3-way connector, connect 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 approximately 39.9 kPa (300 mmHg, 11.8 inch Hg). (The actuator rod is pulled out.)
e) Rapidly depress the accelerator pedal to fully open position and check that the vacuum gauge needle points to 0 kPa (0 mm Hg, 0 inch Hg). (The actuator rod is returned.)
f) Remove the vacuum gauge, and connect the vacuum hose to the actuator.
g) Reinstall V-bank cover.
INSPECTION
1. INSPECT INTAKE AIR SURGE TANK
a) Inspect the diaphragm.
1) Check that the lever moves when vacuum of 26.6 kPa (200 mmHg) is applied with the mighty bag on.
2) Check that the vacuum of 26.6 kPa (200 mm Hg) is sustained for 1 minute in the above state.
2. INSPECT VACUUM SWITCHING VALVE ASSY NO.1
a) Inspect the VSV for open circuit.
1) Using an ohmmeter, check that there is continuity between each terminals.
Resistance: 33 - 39 Ohms at 20°C (68°F)
b) Inspect the VSV for ground.
1) Using an ohmmeter, check that there is no continuity between each terminal and the body.
c) Inspect the VSV operation.
1) Check that air flows from port E to the filter.
2) Apply battery positive voltage across the terminals.
3) Check that air flows from port E to port F.