Vacuum Leak Test - Bosch ACS 753 Repair Instructions

Plumbing and Mechanical
ACS 753, ACS 763, ACS 863 Service Manual
VACUUM LEAK TEST PROCESS
High side inlet and low side inlet solenoids are activated to equalize high and low sides of system being serviced.
Unit checks low-side transducer for rise in vacuum. If the unit sees a rise of 338 mbar (10 in Hg) within 5 minutes
time, the vacuum leak test will fail (this is not a service menu test.)
Figure 4-14. Vacuum Leak Test
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SP00D00609 2018-03-26 Robert Bosch GmbH