Outside Air Temperature Display Inaccurate or Inoperative
Outside Air Temperature Display Inaccurate or Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Instrument Cluster Schematics | |||
| 1 | Did you review the Instrument Cluster Description and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Lighting Systems |
| 2 | Verify the outside temperature display is inaccurate or inoperative. Does the system operate normally? |
Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 | Measure the resistance between cavity 1 and 2 of the Ambient Air Temperature Sensor. Refer to Ambient Air Temperature Sensor Resistance for proper resistance specifications. Is resistance within specs? |
Go to Step 4 | Go to Step 11 |
| 4 | With the ignition in the ON position. Test cavity 1 of the ambient air temperature sensor harness connector for a 5 volt reference signal. Refer to Circuit Testing
in Wiring Systems. Is the voltage present? |
Go to Step 5 | Go to Step 6 |
| 5 | Test cavity 2 of the ambient temperature sensor harness connector for continuity to ground. Refer to Circuit Testing
in Wiring Systems. Is a ground present? |
Go to Step 10 | Go to Step 7 |
| 6 | With the ignition in the ON position. Test cavity 38 of the Instrument panel cluster harness connector for a 5 volt reference signal.Refer to Circuit Testing
in Wiring Systems. Is the voltage present? |
Go to Step 8 | Go to Step 10 |
| 7 | Test cavity 39 of the Instrument panel cluster harness connector for continuity to ground. Is a ground present? |
Go to Step 9 | Go to Step 10 |
| 8 | Repair the open or high resistance in 5 volt referance circuit between cavity 38 of the I/P cluster and caity 1 of the ambient air temperature sensor. Refer to Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 12 | - |
| 9 | Repair the open or high resistance in the ambient temperature sensor ground circuit between cavity 39 of the I/P cluster and cavity 2 of the ambient temperature sensor Refer to Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 12 | - |
| 10 | Replace the Instrument Panel Cluster. Refer to Instrument Panel Cluster (IPC) Replacement Did you complete the replacement? |
Go to Step 12 | - |
| 11 | Replace the ambient air temperature sensor. Did you complete the repair? |
Go to Step 12 | - |
| 12 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |