1471-02

1471-02 AMBIENT TEMPERATURE SENSOR SHORT TO GROUND





- When Monitored: With the ignition on.

- Set Condition: The Instrument Cluster reports an abnormally low voltage that is detected on the Ambient Temperature Sensor Signal circuit.





1. READ AMBIENT TEMPERATURE SENSOR VOLTAGE WITH DRB III(R)





Turn the ignition off.

Disconnect the Ambient Temperature Sensor harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.

With the DRB III(R), read the Ambient Temperature Sensor voltage.

Does the DRB III(R) display AMBIENT TEMP: 4.5 VOLTS or greater?

Yes

- Replace the Ambient Temperature Sensor.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Go to 2

2. MEASURE THE RESISTANCE BETWEEN GROUND AND THE AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT





Turn the ignition off.

Disconnect the Instrument Cluster harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between ground and the Ambient Temperature Signal circuit.

Is the resistance below 1000.0 ohms?

Yes

- Repair the Ambient Temperature Sensor Signal circuit for a short to ground.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Go to 3

3. MEASURE THE RESISTANCE FROM THE AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT TO THE SENSOR GROUND CIRCUIT





With the ignition off.

Measure the resistance from the Ambient Temperature Sensor Signal circuit to the Sensor Ground circuit at the Ambient Temperature Sensor connector.

Is the resistance below 1000.0 ohms?

Yes

- Repair the Ambient Temperature Sensor Signal circuit for a short to the Sensor Ground circuit.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Replace the Instrument Cluster.
- Perform BODY VERIFICATION TEST. Body Verification Test