SSANGYONG 1999 Musso Service Manual page 736

Test step 1
Connect vacuum pump (14) with Y adapter to PLA
vacuum unit (5). Run engine at idle speed.
Vacuum 500 mbar
YES
(Remove the connection hose from vacuum pump)
Connect vacuum pump (14) direct to PLA vacuum unit
(5) and pressurize with vacuum.
Vacuum is built up and idle speed increases approx.
150-200 rpm
YES
(Coolant Temperature 30°C)
Stop the engine Seal the air admission line with plug.
Connect the vacuum pump to line to thermovalve and
pressurize the line with vacuum.
Vacuum is built up.
YES
= >
NO
Lines and connections leaking.
Faulty PLA vacuum unit.
NO
Faulty PLA vacuum unit
NO
Lines and connectors leaking.
Faulty thermovalve.
OM600 ENGINE CONTROLS 1F3-7