Buitentemperatuur Weergave

[RuudM]

De weergave van de buitentemperatuur in mijn XJ Cherokee Sport 2001 geeft steeds ongeveer 4 graden hoger aan dan de werkelijke temperatuur. Heeft iemand een idee hoe ik dit kan korrigeren?

[Gast wjj]

De weergave van de buitentemperatuur in mijn XJ Cherokee Sport 2001 geeft steeds ongeveer 4 graden hoger aan dan de werkelijke temperatuur. Heeft iemand een idee hoe ik dit kan korrigeren?

gewoon 4 graden ervan aftrekken

[Mav]

Je kunt de sensor even doormeten, zit voor in de grill aan de radiator.

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

2.986 kilohms. The sensor resistance should read

between these two values. If OK, go to the Sensor

Circuit Test. 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 the Trip

Computer, Compass, and Thermometer Display Module

diagnosis in this group. If not OK, repair the

short circuit as required.