87-187
Vacuum supply and one-way valve,
testing
Notes: - Detach hose -B- from two-way valve (N63) and connect vacuum gauge
VAG1368 (or equivalent) to hose.
- Start engine and run at idle until the readout has stabilized.
- Switch off engine. Vacuum reading on gauge must not drop by more
than 50 mbar within 2 minutes.
Specification for vacuum when engine running: greater than 250 mbar.Removing and installing vacuum reservoir and one-way valve page 87
-188
Testing -N63-, output Diagnostic Test Mode (DTM) page 01
-42
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