How to change iat sensor for grand cherokee 3.7

2005 Jeep Grand Cherokee Service Repair Manual INSTANT DOWNLOAD


for the easy solution download the pdf file

you may have a problem with the throttle position sensor,check your IAT well

great question, on some cars, its NOT THERE.
nice how you actually state engine option.
but way not post symtoms, or evidence. (got DTC errors from scan tool?)
fsm says.
4.7 quote:
The Intake Manifold Air Temperature IAT sensor is located on the left side of the intake manifold.
For a temperature of 68F (20C) the resistance is approximately 6000 ohms. For a temperature of 104F (40C) the resistance is approximately 3300 ohms. (this forum hates degrees symbols , dang)

its just a Thermistor. NTC

on some cars, its in the MAF
others its screwed in to the air cleaner box.
others, (yours) its in the air plenum. (MAP base EFI)
the map system needs the plenum baro and temp. TOGETHER.

Trouble Code: P0113

IAT Sensor Circuit High Input
Possible Causes:


IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open

Trouble Code: P0123

TP Sensor/APPS Circuit High Input
Possible Causes:


Related TP Sensor engine DTCs present Intermittent wiring or connector problem TP signal circuit is open or is shorted to battery voltage or to 5v supply circuit TP sensor has failed TP sensor ground circuit is open PCM has failed IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed

Please specify the year, make and model of your vehicle to give the exact location.

On the left side of the intake manifold. Mounted on the intake to get the temperature inside the intake.
Hope it will help
Dan

Trouble Code: P0113 (4.0L L6 VIN S Auto)
IAT Sensor Circuit High Input Print this code data Number of Trips to Set Code: 1
OBD II Monitor Type: CCM Details
Indicators: MIL Details

• CCM Details

Trouble Code Conditions:
Check with ignition on or engine running; battery voltage more than 10v; The PCM detected the IAT Sensor input was over 4.90v (exc. Dakota, Durango, Ram) or 4.98v (Dakota, Durango, Ram) for 3 seconds.

Possible Causes:

• IAT Sensor signal circuit shorted to VREF (5v)
  
• IAT Sensor signal circuit is open, or the ground circuit is open
  
• IAT Sensor is damaged or it has failed (an internal open circuit)
  
• PCM has failed
  

In the air box... should be a two wire plug:
- ZJ-Secc-25-Emission-Control-Systems
- ZJ-Secc-8W-Wiring-Diagrams (page 62)

Hope helped with this; good luck (remember rated this help).

RADIATOR FAN WORKS OFF OF THE COOLANT SENSOR NOT THE IAT SENSOR. CHECK YOUR RELAYS AND ALSO SEE IF IT COMES ON WITH THE A/C AS THIS OVERIDES THE COOLANT SENSOR FOR THE FAN. MOST LIKELY CAUSE WOULD BE A FAN RELAY