THERMOMETER
The thermometer function is supported by a ambient
temperature sensor, a wiring circuit, and a portion
of the overhead console trip computer, compass,
and thermometer display module display. The sensor
is mounted outside the passenger compartment near
the front and center of the vehicle.
If any portion of the ambient temperature sensor
circuit fails, the thermometer display will self-diagnose
the circuit. An “SC” (short circuit) will appear in
the display in place of the temperature, when the
sensor is exposed to temperatures above 110° C (230°
F), or if the sensor circuit is shorted. An “OC” (open
circuit) will appear in the display in place of the temperature,
when the sensor is exposed to temperatures
below -50° C (-58° F), or if the sensor circuit is open.
The ambient temperature sensor circuit can also be
diagnosed using the following Sensor Test, and Sensor
Circuit Test. If the temperature sensor and circuit
are confirmed to be OK, but the temperature
display is inoperative or incorrect, see Trip Computer,
Compass, and Thermometer Display Module in
the Diagnosis and Testing section of this group. For
circuit descriptions and diagrams, refer to 8W-49 -
Overhead Console in Group 8W - Wiring Diagrams.
SENSOR TEST
(1) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Unplug the temperature sensor wire harness connector.
(2) Measure the resistance of the temperature sensor.
At -40° C (-40° F), the sensor resistance is 336
kilohms. At 55° C (131° F), the sensor resistance is
2.488 kilohms. The sensor resistance should read
between these two values. If OK, see Sensor Circuit
Test in the Diagnosis and Testing section of this
group. If not OK, replace the faulty sensor.
SENSOR CIRCUIT TEST
(1) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Unplug the ambient temperature sensor wire harness
connector and the overhead console wire harness
connector.
(2) Connect a jumper wire between the two terminals
in the body half of the sensor wire harness connector.
(3) Check for continuity between the sensor return
circuit and the ambient temperature sensor signal
circuit cavities of the overhead console wire harness
connector. There should be continuity. If OK, go to
Step 4. If not OK, repair the open circuit as required.
(4) Remove the jumper wire from the ambient temperature
sensor wire harness connector. Check for
continuity between the sensor return circuit cavity of
the overhead console wire harness connector and a
good ground. There should be no continuity. If OK, go
to Step 5. If not OK, repair the short circuit as
required.
(5) Check for continuity between the ambient temperature
sensor signal circuit cavity of the overhead
console wire harness connector and a good ground.
There should be no continuity. If OK, see Trip Computer,
Compass, and Thermometer Display Module in
the Diagnosis and Testing section of this group. If not
OK, repair the short circuit as required.

 

wow hydra, multi-post much

 

I will test what you have me info for ,now for the other problems ,my heater wont only blows out on defrost, and the dual climate controls in the front are the sliding type not *****, they will not change the temperature for front it is always extremly hot, and the back is blowing out cold and you cant change temp. there either, would you suspect a vacuum line or the blend doors.
Thanks for all of your anwsers they are very much appreciated

 

Please start a new thread as this is off topic.