mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

Auxiliary Water Pump > < Aspirator, HVAC|Locations|Page 7573
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Aspirator: Testing and Inspection

Interior Temperature Sensor

1.

Switch "ON" the ignition.

2.

Place a small piece of paper approx. 1/2 in. square onto the grid of the interior temperature sensor.

The paper must stay in position.

If the paper does not stay in position, check the vacuum line for leaks or possible disconnection; replace the aspirator blower as necessary.  

Auxiliary Water Pump > < Aspirator, HVAC|Locations|Page 7573