Test point 2

Outside temperature sensor

Open circuit Short to ground DTC 21

Diagnosis conditions

No control module fault stored. No fault on the supply voltage (5 Volt).

Open circuit

1. Pull off connector A on the heating/air conditioning control.

2. Connect ohmmeter to connector A 7 and A 12. Display: Approx. 1.2 kfl at 23 ° C

3. Pull off connector on the outside temperature sensor.

4. Connect ohmmeter to connector A 7 and pin 1 (connector, outside

5. Connect ohmmeter to connector A 12 and pin 2 (connector, outside

6. Connect voltmeter to connector A 7 and ground.

If approx. 5 Volt is displayed, check the wiring for pinching and chafing.

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