This is the sensor to
detect the fuel tank leakage in way which it measures the differential
pressure between the inside and outside of the fuel tank.

Check that fuel level is
over 15%. If not, this inspection is not available. The vehicle must be
running and at idle. Don't forget it.
1. |
Prepare a voltmeter and connect it to FTP pins
as shown.

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2. |
After 20 min.' idling , inspect the
voltage.
System voltage : 5V
At acceleration : Max. 4.5, Min.
0.5V
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3. |
At idle make sure that voltage changes as rpm
changes.
If voltage is not within specification,
there is a leak. Inspect the fuel tank and hoses toward
canister and fuel neck. Then repair or replace relevant
parts.

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