Heating Capacity

HEATING CAPACITY TEST:

NOTES:
- For tests in workshop, in the event of complaints due to insufficient heating capacity and for trouble diagnosis on air conditioning systems, proceed according to the following test method, which is applicable for ambient temperatures from +20°C to +40°C.
- All check values can be read after 10 minutes of constant operation. The values named are max. values and should not be exceeded.

TEST PROCEDURE:
1. Start vehicle engine.

ACC Pushbutton Control Unit:

2. Push function selection button "a". Blower operates in 6th blower stage.
3. Plug thermometer into defroster nozzle at the left.
4. Keep engine running at approx. 2000/min after attaining operating temperature.
5. Read thermometer after approx. 5 minutes. Thermometer should indicate > 55°C.

NOTE: If heating capacity is insufficient, check engine thermostat or monovalve and replace, if required.