Test point 2

Outside temperature sensor

Open circuit Short to ground Fault code 21

Diagnosis conditions

No control module fault stored. No fault with supply voltage (5 volts).

Open circuit

1. Unplug connector A from the heating/air-conditioning control,

2. Connect ohmmeter to connectors A 7 and A 12.

3. Unplug connector from the outside temperature sensor,

4. Connect ohmmeter to connector A 7 and pin 1 (connector of outside temperature sensor).

5. Connect ohmmeter to connector A 12 and pin 2 (connector of outside temperature sensor).

6. Connect voltmeter to connector A 7 and ground,

If approx. 5 volts are displayed, check wiring harness for pinching and chafing damage.

Short to ground

1. Unplug connector A from the heating/air-conditioning control.

2. Connect ohmmeter to connector A 7 and ground

If 0 - 5 Q is displayed, check wiring harness for pinching

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