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Home >> Pontiac >> 2005 >> Pursuit Base, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays, Gauges And Console >> Diagnostic Information and Procedures >> Outside Air Temperature Display Inaccurate or Inoperative >> Test Description

Test Description

The number below refers to the step number on the diagnostic table.

  1. 3:  This step tests for resistance in the signal and ground circuit of the ambient air temperature sensor.
Outside Air Temperature Display Inaccurate or Inoperative

Step Action Values Yes No
Schematic Reference: Instrument Cluster Schematics  or Body Control System Schematics
Connector End View Reference: Instrument Panel, Gages, and Console Connector End Views 
DEFINITION: The outside air temperature display on the driver information center (DIC) or radio display cannot be adjusted, or is inaccurate.
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2
IMPORTANT: A thermometer is the proper tool to use when checking the actual ambient temperature line. Ambient temperature should not be taken from a radio station or a sign displaying temperature.
  1. Turn the ignition ON, with the engine OFF.
  2. Set the DIC menu on the instrument panel cluster (IPC) to the temperature display.
Does the temperature displayed on the DIC show an accurate temperature reading?		 - Go to Testing for Intermittent Conditions and Poor Connections Go to Step 3 
3 
IMPORTANT:
  • Verify the resistance settings with a DMM.
  • A thermometer is the proper tool to use when checking the actual ambient temperature line. Ambient temperature should not be taken from a radio station or a sign displaying temperature.
  1. Verify the ambient air temperature.
  2. Test the ambient air temperature sensor signal and ground circuit resistance, from the sensor signal circuit to the low reference circuit of the sensor. Refer to Sensor Resistance Table (Ambient Air Temp Sensor ) .
Is the resistance within the table min/max ohm parameters for the stated °C/°F temperature?		 - Go to Step 4  Go to Step 6 
4 Test the ambient air temperature sensor signal circuit for a high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 10  Go to Step 5 
5 Test the ground circuit of the ambient air temperature sensor for a high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 10  Go to Step 7 
6 Inspect for poor connections at the harness connector of the ambient air temperature sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 10  Go to Step 8 
7 Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections andConnector Repairs .
Did you find and correct the condition?		 - Go to Step 10  Go to Step 9 
8 Replace the ambient air temperature sensor. Refer to Ambient Air Temperature Gage Sensor Replacement .
Did you complete the replacement?		 - Go to Step 10  -
9 Replace the IPC. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?		 - Go to Step 10  -
10
  1. Use the scan tool to clear any DTC codes.
  2. Operate the system in order to verify the repair.
Did you correct the condition?		 - - Go to Step 2 
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