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Home >> Volkswagen >> 2000 >> Jetta Sedan (9M2) V6-2.8L (AFP) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Combination Valve, Checking >> With Manufacturer's Scan Tool
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With Manufacturer's Scan Tool




Combination valve, checking

Special tools, equipment, test and inspection devices; required accessories





- VAG 1331 torque wrench (5 - 50 Nm) or equivalent





- VAG 1390 manual vacuum pump

Test conditions
- No error in fault memory
- Output diagnostic test mode completed
- Vacuum lines and hose connections tight
- Vacuum lines not clogged or kinked

Test sequence
- Remove damping pans
- Pull vacuum hose off combination valve on secondary air valve -N112-.





- Connect VAG 1390 manual vacuum pump on vacuum hose to combination valve.

Note: Do not use any compressed air in the following test!





- Remove intake hose to combination valve on top of air filter -arrow- and blow in with low pressure.
The combination valve must be closed.
- Start hand pump.
The combination valve should open.
If the combination valve does not open:
- Replace combination valve.
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