| Evaluating checks of air conditioning system pressure switch -F129- |
Note | The following checks are performed when installed. |
| To assess the air conditioner's performance, perform and evaluate the following checks: |
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| Check the air conditioner's fill level; the air conditioner is switched off if the pressure is too low (for example, loss of refrigerant). |
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| Check blower switch-on; radiator fan -V7- is switched to the next higher speed when the pressure in the refrigerant circuit rises (excessive pressure). |
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| Check air conditioner switch-off; the air conditioner is switched off when pressure is excessive (for example when engine cooling is insufficient). |
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