For 1990-2009 cars
Instrument Cluster Components
00 UVAN DID Schematic Figure SIO
Handling ESD Sensitive Parts Notice
Cell 14: G200

### Circuit Description

The Driver Information Display (DID) applies 5 volts to the ambient air temperature sensor. The ambient air temperature sensor is a thermistor which will vary in resistance with temperature change. As the resistance of the ambient air temperature sensor increases, the DID senses a larger voltage drop across the sensor, indicating a lower temperature. As the resistance of the ambient air temperature sensor decreases, the DID senses a small voltage drop across the sensor, indicating a higher temperature.

### Conditions for Running the DTC

The DID must be fully operational within a continuous voltage supply of 9.0 to 16.0 volts.

### Conditions for Setting the DTC

The sensed temperature must be less than -40° F for more than 2 seconds.

### Action Taken When the DTC Sets

OC is displayed by the DID in compass/temperature mode when the condition is present.

### Conditions for Clearing the DTC

• | DTC B0162 will become history when the DID no longer detects a failure.

• | History DTC B0162 will clear after 100 fault free ignition cycles.

• | The DTC can be cleared with a scan tool.

### Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

1. Tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the driver information display diagnostic system check? | -- | Go to Step 2 | Go to Diagnostic System Check - Driver Information Systems
2 | Does the Driver Information Display (DID) display OC? | -- | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
3 |

1. Turn OFF the ignition.
2. Disconnect the ambient air temperature sensor.
3. Connect a 3A fused jumper wire between the signal circuit and the ground circuit of the ambient air temperature sensor.
4. Turn ON the ignition, with the engine OFF.

Does the DID display SC?

--

Go to Step 6

Go to Step 4

4 | Test the signal circuit of the ambient air temperature sensor for a short to voltage, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs or Connector 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 or an open. Refer to Circuit Testing and Wiring Repairs or Connector 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 Circuit Testing and 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 DID. Refer to Circuit Testing and 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: Perform the set up procedure for the replacement DID. Replace the DID. Refer to Driver Information Center Replacement . Did you complete the replacement? | -- | Go to Step 10 | --
10 |

1. Use the scan tool in order to clear the DTCs.
2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

--

Go to Step 2

System OK