I have an 02 Elantra GT with code P0113 Intake air temp circuit high. I've looked up the problem on hmaservice, but the photos and diagrams don't seem to match my car. The diagram shows five terminals on the MAFS connector, but mine only has four (not to mention it's in a different place than the photo).

Can anyone help or point me to some basic, accurate troubleshooting steps for this?

Does this problem usually need replacement of the MAFS?

Thanks,

Pete

 

Intake air temp sensor is different from the MAP sensor. IAT is built into the MAP however. Are you sure your looking at the correct diagram?

ELANTRA(XD) >2002 > G 2.0 DOHC > Fuel System > MFI Control System > Intake Air Temperature (IAT) Sensor > DESCRIPTION AND INSPECTION
INTAKE AIR TEMPERATURE SENSOR(IAT sensor)
The intake air temperature sensor (IAT Sensor), built in to the MAP sensor, is a resistor-based sensor detect the intake air temperature. According to the intake air temperature information from the sensor, the ECM will control the necessary amount of fuel injection.

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CIRCUIT DIAGRAM

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TROUBLESHOOTING HINTS
The MIL is ON or the DTC is displayed on the HI-SCAN (Pro) under the following condition;
a.
When the intake air temperature is detected below--40°C or higher than 120°C.
USING HI-SCAN (Pro)
Check item

Data display

Check conditions

Engine state

Test specification
Intake air temperature sensor

Air temperature

Ignition switch : ON or engine running

When -20°C (-40°F)

-20°C
When 0°C (32°F)

0°C
When 20°C (68°F)

20°C
When 40°C (104°F)

40°C
When 80°C (176°F)

80°C

HARNESS INSPECTION PROCEDURES

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SENSOR INSPECTION
1.
Using a multimeter, measure the IAT sensor resistance between terminals 3 and 4.
IG.SW.ON

Temperature °C (°F)

Output voltage (Ω)
0 (32)

4.5 - 7.5Ω
20 (68)

2.0 - 3.0Ω
40 (104)

0.7 - 1.6Ω
80 (176)

0.2 - 0.4Ω

2.
If the resistance deviates from the standard value, replace the intake air temperature sensor assembly.


A code P0113 may mean that one or more of the following has happened:

* Internally failed IAT sensor
* Faulty connection at IAT sensor
* Open in IAT ground circuit or signal circuit
* Short to voltage in IAT signal circuit or reference circuit
* IAT harness and/or wiring routed too close to high-voltage wiring (e.g. alternator, spark plug cables, etc.)
* Faulty PCM (less likely but not impossible)

 

Thanks. Now that you showed me what I should have been looking for I was able to find the proper diagram. I was looking at the specific code info under DTC (which isn't model/year specific, I guess?). Looks like I need to figure out how to use hmaservice a little better.