Pinpoint Test AL Outside Temperature Always Indicates -40°F (-40°C)

Verifying Condition: Turn ignition on. Read outside temperature. Remove fuse No. 1 (Town Car) or No. 5 (Crown Victoria and Grand Marquis). Instrument cluster should go blank.
After 30 seconds, reinstall fuse and read outside temperature. If reading is correct, refer to pinpoint index for further testing. See Figure . If reading is incorrect, proceed to step 3).
Checking Air Temperature Sensor Connector: Unplug connector from air temperature sensor at radiator support. Connector has Dark Blue/Yellow and Pink/Orange wires.
Connect jumper wire between wiring harness terminals. Turn ignition on. Remove fuse No. 1 (Town Car) or No. 5 (Crown Victoria and Grand Marquis). Wait 30 seconds. Read outside air temperature.
If reading is not -40°F (-40°C) go to step 9). If reading is -40°F (-40°C), proceed to step 6).
Checking Connector: Disconnect 16-pin connector (with Dark Blue/Yellow wire) at left rear corner of engine compartment at rear of wheel well. Turn ignition on. Remove fuse No. 1 (Town Car) or No. 5 (Crown Victoria and Grand Marquis). Wait 30 seconds. Reinstall fuse. Read outside air temperature.
If reading is not -40°F (-40°C), repair wiring between connector and air temperature sensor. If reading is -40°F (-40°C), go to step 8).
Checking Air Temperature Sensor: Measure resistance between air temperature sensor terminals. If resistance is 33,000-47,000 ohms at 60-70°F (16-21°C), go to next step. If resistance is not within specifications, replace air temperature sensor.
Checking Air Temperature Sensor Connector: Check for defective connections at air temperature sensor. If connections are defective, repair as necessary. If connections are okay, return to step 1).