Camshaft Adjustment Valve 1 N205 , checking

Special tools, testers and auxiliary items required 

• Multimeter V.A.G 1526 or equivalent.
• Test Box 105 Pin VAG1598/42.
• Adapter Lead Vag1598/39 VAG1598/39.
• Adapter cable V.A.G 1598/39-1.

Test requirements 

• Fuse for Camshaft Adjustment Valve 1 N205 OK.
• Motronic Engine Control Module (ECM) Power Supply Relay J271 OK.
• Battery voltage at least 12.5 volts.
• All electrical consumers such as, lights and rear window defroster, switched off.

• Vehicles with automatic transmission, shift selector lever into position "P" or "N".
• A/C switched off.
• Ground (GND) connections between engine/transmission/chassis OK.
• Ignition switched off.

Test sequence 

Fig 1: Removing Engine Cover

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Remove engine cover - arrows  -.

Fig 2: Disconnecting Electrical Harness Connector From Camshaft Adjustment Valve 1 N205

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Disconnect the electrical harness connector - 1  - from Camshaft Adjustment Valve 1 N205.
• Using the Multimeter V.A.G 1526 A or equivalent, check the Camshaft Adjustment Valve 1 N205 for resistance.

Specified value: 5.0 to 8.0 Ω (at approx. 20°C)

If the specification is not obtained:

• Replace Camshaft Adjustment Valve 1 N205 → 15 - ENGINE - CYLINDER HEAD, VALVETRAIN .

If the specification is obtained:

• Connect the test box 1598/42 to the wiring harness of the Engine Control Module (ECM) J623. → 24 - MULTIPORT FUEL INJECTION (MFI) . The ECM is not connected.

Fig 3: Identifying 2-Pin Electrical Connector & Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Using the Test Box 105 Pin VAG1598/42 and Multimeter V.A.G 1526 A or equivalent, check the following wiring connection for an open circuit.

Specified resistance 1.5 Ω max.

If the specification is not obtained:

• Check the wiring for a short circuit to Battery positive (+) or an open circuit.
• If necessary, repair the wiring connection.

If no malfunctions are found in the wiring:

• Replace the Engine Control Module (ECM) J623 → Engine Control Module (ECM) J623 , replacing .

Assembly is performed in the reverse order of removal, note the following:

Final procedures 

After repair work, the following work steps must be performed in the mentioned sequence:

1. Check the DTC memory..
2. If necessary, erase the DTC memory..
3. If the DTC memory was erased, generate readiness code..

• End diagnosis and switch ignition off.