INSPECT CHARCOAL CANISTER ASSY Except PZEV
(a) Visually check the charcoal canister for cracks or damage.
If cracks or damage is found, replace the charcoal canister assy.
(b) Check charcoal canister operation.
(1) While holding the purge port closed, blow air (0.39 kPa, 4.0 gf/cm2, 0.06 psi) 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.
(2) While holding the air inlet port closed, blow air (0.39 kPa, 4.0 gf/cm2, 0.06 psi) into the vent port, and check that air flows from the purge port. If the result is not as specified, replace the charcoal canister.
(3) While holding the air inlet port closed, apply vacuum (3.43 kPa, 25.7 gf/cm2, 1.01 psi) to the vent port, and check that air is sucked in from the purge port. If the result is not as specified, replace the charcoal canister.
(c) Check the air tightness.
(1) While holding the vent and air inlet ports closed, apply vacuum (3.43 kPa, 25.7 gf/cm2, 1.01 psi) to the purge port, and check that the vacuum is maintained for 1 minute.
HINT:
In order to maintain air tightness, the check should be performed while holding the CCV terminal port closed.
If the result is not as specified, replace the charcoal canister.
(d) Check the diaphragm.
(1) Remove the air hose between ports A and B.
(2) While holding the vent, purge and air inlet ports closed, apply vacuum (1.42 kPa, 11 mmHg, 0.42 in.Hg) into port A, and check that air is sucked in from port B.
Vacuum Vent Port
Air Inlet Port
A67140
Vacuum Vent Port
Air Inlet Port
A67140
Vent Port
Air Inlet Port
Vent Port
Air Inlet Port
(3) While holding the vent, purge and air inlet ports closed, apply vacuum (1.42 kPa, 11 mmHg, 0.42 in.Hg) into port A, and measure how long it takes for vacuum to drop.
Vacuum drop time: 10 seconds or more If the result is not as specified, replace the charcoal canister.
(4) Reinstall the air hose between ports A and B.
(e) Check the VSV for open circuit.
(1) Measure the resistance between the terminals. Standard:
|
Condition |
Specified Condition |
|
20« (68«) |
25 to 30 n |
|
100« (212«) |
32 to 40 Ü |
If the result is not as specified, replace the charcoal canister.
A74866
(f) Check VSV operation.
(1) Check that air flows from port A to ports B and C. If the result is not as specified, replace the charcoal canister.
(2) Apply battery positive voltage across the terminals.
(3) Check that the valve is closed.
If the result is not as specified, replace the charcoal canister. NOTICE:
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