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Heater Core|Testing and Inspection|Page 3389 > < Heater Core|Testing and Inspection
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Test procedure

4. Restart the engine.

4.1. Assess air flow with regard to odour, while gradually increasing the temperature.

Evaluation of odour test
1 to 2 = vehicle not usable
3    = odour no longer acceptable
4    = extremely disagreeable odour
5    = unpleasant odour
6    = odour just about acceptable
7    = slight odour
8    = very slight odour
9    = odour hardly noticeable

10    = no odour in air

Action based on score:

5. With score 1 to 6.

5.1. Remove heat exchanger.

5.2. Clean air-conditioning housing in area of inner heat exchanger.
5.3. Install new heat exchanger.

6. With score 7 to 10.

6.1. No action.

Heater Core|Testing and Inspection|Page 3389 > < Heater Core|Testing and Inspection