The numbers below refer to the step numbers on the diagnostic table.
This step tests for a high resistance in the signal circuit and the ground circuit of the ambient air temperature sensor.
DTCs may be set in the DIC when you perform this diagnostic table.
Step | Action | Value(s) | Yes | No |
---|---|---|---|---|
Schematic Reference: Driver Information System Schematics | ||||
1 | Did you perform the Driver Information Center Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Does the temperature displayed on the DIC match the current room temperature within 3°F (2°C)? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
Important: Verify the J 33431-C Signal Generator and Instrument Panel Tester resistance settings with a DMM. Does the DIC display the specified value? | 130°F (54°C) | Go to Step 6 | Go to Step 4 | |
4 | Test the signal circuit of the ambient air temperature sensor for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. 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 to Wiring Repairs in Wiring Systems. 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 to Connector Repairs in Wiring Systems. 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 DIC. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. 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 |
Important: Calibrate the compass on the replacement DIC. Refer to Electronic Compass Calibration . Replace the DIC. Refer to Driver Information Center Replacement . Did you complete the replacement? | -- | Go to Step 10 | -- |
Did you correct the condition? | -- | System OK | Go to Step 2 |