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EC-6
EMISSION CONTROL (1GR-FE) - EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
EC0OC-01
INSPECTION
1. INSPECT LINES AND CONNECTIONS
Visually check for loose connections, sharp bends or damage.
2. INSPECT FUEL TANK
Visually check for deformation, cracks or fuel leakage.
3. INSPECT FUEL TANK CAP
Visually check if the cap and/or gasket are deformed or dam-
aged.
If necessary, repair or replace the cap.
Gasket
B17594
4. INSPECT FUEL CUTOFF VALVE AND FILL CHECK
VALVE
(a) Disconnect the vent line hose from the fuel tank.
Fuel Tank (b) Connect the pressure gauge to the fuel tank.
(c) Fill the fuel tank with fuel.
(d) Apply pressure of 4 kPa (41 gf/cm2,0.58 psi) to the vent
port of the fuel tank.
HINT:
It is necessary to check the amount of fuel in the fuel tank. When
the fuel tank is full, the float valve of the fill check valve is closed
and no air can pass through.
Vent Line Hose (e) Remove the fuel tank cap, and check that the pressure
Fuel Tank Cap drops.
If the pressure does not drop, replace the fuel tank assembly.
(f) Reconnect the vent line hose to the fuel tank.
B17662
Air Inlet Hose
5. CHECK AIR INLET LINE
(a) Disconnect the air inlet line hose from the charcoal canis-
ter.
(b) Check that air can flow freely into the air inlet line.
If air cannot flow freely into the air inlet line, repair or replace it.
(c) Reconnect the air inlet line hose to the charcoal canister.
6. REMOVE CHARCOAL CANISTER ASSEMBLY
Air B17598
EC-7
EMISSION CONTROL (1GR-FE) - EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
7. INSPECT CHARCOAL CANISTER ASSEMBLY
(a) Visually check the charcoal canister for cracks or dam-
age.
If cracks or damage are found, replace the charcoal canister as-
sembly.
B17599
Purge Port (b) Check charcoal canister operation.
(1) With the purge port closed, blow 1.67 kPa (17.0 gf/
Air
cm2, 0.24 psi) of air into the vent port, and check
that air flows from the air inlet port.
If the result is not as specified, replace the charcoal canister as-
sembly.
Air Inlet Port
Vent Port
B17600
(2) With the vent port closed, blow 1.10 kPa (11.2 gf/
Purge Port Air Inlet Port
cm2, 0.16 psi) of air to the air inlet port, and check
Air that air flows from the purge port.
If the result is not as specified, replace the charcoal canister as-
sembly.
Vent Port B17601
(c) Check for air leakage.
(1) Remove the air hose between ports A and B.
(2) Connect the pressure gauge to the vent port of the
charcoal canister.
(3) While holding port B, with the purge port and the air
Port B Air Inlet Port inlet port closed and port A open, apply 19.6 kPa
Port A Purge Port (0.2 kgf/cm2, 2.81 psi) of pressurized air into the
vent port, then confirm that pressure is retained for
1 minute.
If the result is not as specified, replace the charcoal canister as-
sembly.
Vent Port
Pressure Gauge
B17663
EC-8
EMISSION CONTROL (1GR-FE) - EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
(d) Check leak detection pump.
(1) Remove the detection pump from the charcoal can-
ister.
C (2) Check that air flows from port A to B and then to C.
If the result is not as specified, replace the charcoal canister as-
sembly.
A
Air B
B17603
(3) Connect the positive (+) lead of the battery to termi-
Valve Closed nal 7 and the negative (-) lead to terminal 6.
(4) Check that the valve is closed.
7 6 If the result is not as specified, replace the charcoal canister as-
sembly.
(5) Install the detection pump.
B17604
EC-9
EMISSION CONTROL (1GR-FE) - EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
8. INSPECT VSV FOR EVAP (See page SF-65)
9. REINSTALL CHARCOAL CANISTER ASSEMBLY
EC-10
EMISSION CONTROL (1GR-FE) - EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
- MEMO -
EC-11
EMISSION CONTROL (1GR-FE) - EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
- MEMO -
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