Hyundai Tiburon (2003 year). Manual — part 46

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.

TIBURON(GK) > 2003 > G 2.7 V6 DOHC > Emission Control System > Evaporative Emission Control
System > Fuel Tank Pressure Sensor (FTPS) > Repair procedures, TIBURON(GK) > 2003 > G 2.7 V6
DOHC > Emission Control System > Evaporative Emission Control System > Fuel Tank Pressure
Sensor (FTPS) > Repair procedures

INSPECTION

1. Prepare a voltmeter and connect it to FTP pins as shown.

2. After 20 min.' idling , inspect the voltage.

System voltage : 5V
At acceleration : Max. 4.5, Min. 0.5V

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.

Check the gasket of the fuel filler cap, and the filler cap itself, for damage or deformation. Replace the cap if
necessary.

TIBURON(GK) > 2003 > G 2.7 V6 DOHC > Emission Control System > Evaporative Emission Control
System > Fuel Filler Cap > Description and Operation, TIBURON(GK) > 2003 > G 2.7 V6 DOHC >
Emission Control System > Evaporative Emission Control System > Fuel Filler Cap > Description and
Operation

OPERATION

TIBURON(GK) > 2003 > G 2.7 V6 DOHC > Fuel System > General Information > Special Service Tools,
TIBURON(GK) > 2003 > G 2.7 V6 DOHC > Fuel System > General Information > Special Service Tools

SPECIAL TOOLS

Tool (Number and name)

Illustration

Use

09353-38000
Fuel pressure gauge adapter

Connection of fuel pressure gauge to
delivery pipe for measurement of fuel
pressure.

09353-24100
Fuel pressure gauge & hose

TIBURON(GK) > 2003 > G 2.7 V6 DOHC > Fuel System > General Information > Description and Operation,
TIBURON(GK) > 2003 > G 2.7 V6 DOHC > Fuel System > General Information > Description and Operation

MULTIPORT FUEL INJECTION (MFI)

GENERAL INFORMATION

FUEL INJECTION CONTROL

IDLE SPEED CONTROL

IGNITION TIMING CONTROL

OTHER CONTROL FUNCTIONS

1. Fuel Pump Control :

Turns the fuel pump relay ON so that current is supplied to the fuel pumpwhile the engine is cranking or running.

2. A/C Compressor Clutch Relay Control :

Turns the compressor clutch of the A/C ON and OFF.

3. Fan Relay Control :

The radiator fan and condenser fan speeds are controlled in response to theengine coolant temperature and vehicle
speed.

4. Evaporative Emission Purge Control (Refer to GROUP EC).

DIAGNOSTIC TEST MODE

• When an abnormality is detected in one of the sensors or actuators relatedto emission control, the CHECK

ENGINE/MALFUNCTION INDICATOR LAMP illuminatesas a warning to the driver.

• When an abnormality is detected in one of the sensors or actuators, a diagnostictrouble code corresponding to the

abnormality is output.

• The RAM data inside the PCM that is related to the sensors and actuators canbe read by means of the scan tool. In

addition, the actuators can be controlledunder certain circumstances.

HOW TO COPE WITH INTERMITTENT MALFUNCTIONS