Fuel Temperature Sensor (03-36-015)

Publication date: 2003-06-01
Reference number: 03-36-015

FUEL TEMPERATURE SENSOR

TECHNICAL SERVICE BULLETIN

Reference Number(s): 03-36-015, Date of Issue: June, 2003

HYUNDAI:	2003 Santa Fe, 2003 Sonata, 2003 XG350
GROUP:	36 - Engine Electrical

DESCRIPTION

A new Fuel Temperature Sensor (FTS) has been introduced in the 2003 model year 2.4L and 3.5L Santa Fe, 2.4L Sonata and XG350. The new sensor measures fuel temperature in the fuel tank. The ECM uses this information for the Evaporative Emissions Self Check.

Fuel vapor pressure increases when fuel temperature increases. The ECM references the fuel temperature and indirectly compensates for the fuel vapor pressure during the evaporative emissions leak check. The FTS is located inside the fuel tank and is mounted to the fuel pump assembly.

The ECM can set Diagnostic Trouble Codes (DTC) relating to the FTS.

DIAGNOSTIC TROUBLE CODES

DTC	Check	Code Sets If:
P0181	Rationality check at cold start	There is a difference of 27°F (15°C) between coolant temperature sensor and fuel temperature
P0182	Short Circuit	Signal voltage is less than 0.1V
P0183	Open Circuit	Signal voltage is greater than 4.6V

TEST SPECIFICATIONS

Test Specs	Temperature	Resistance K(Ohm)
Fuel Temperature Sensor	-4° F (-20° C)	14.38 to 15.58
"	32° F (0° C)	5.54 to 5.89
"	68° F (20° C)	2.38 to 2.49
"	140° F (60° C)	0.56 to 0.60

PART NUMBER INFORMATION

Vehicle	Part Number	Comments
Santa Fe (2.4L and 3.5L)	31435-26300	---
Sonata (2.4L)	31435-38300	---
XG350	31435-3 B 500	Production Date 10/1/02 to 10/18/02
"	31435-38300	Production Date 10/19/02 to current

See Fuel Temperature Sensors for Sonata, Santa Fe, and XG350 in Fig 1 .

Fig 1: Fuel Temperature Sensors