2. Checking the valve and thermal switch should only be performed when the coolant temperature is below 30°C.
3. Remove the electrical plug from the starting valve and connect the test lamp to the socket contacts.
4. Remove the high-voltage central wire from the ignition distributor and connect it to ground.
5. Remove the loop from the temporary thermal switch, then connect the second ground wire to the "W" end of the temporary thermal switch (green-white wire).
Note: You cannot connect the ending g (red-black wire) with mass.
6. Turn on the starter and check if the control lamp lights up. If not, there is a break in the circuit that needs to be identified and fixed.
7. To test the cold start valve, leave the end of the temporary thermal switch connected to ground, remove the cold start valve and reconnect its plug. Be careful not to damage the gaskets when removing the valve from the drive manifold.
8. With the fuel pipe and electrical wire connected to the valve, hold the valve over a glass container and turn on the starter for 10 seconds. During the time when the temporary thermal switch is on, the valve should produce a spray of fuel in the shape of a regular cone.
9. Wipe the valve outlet jet dry, then check whether fuel flows out of the valve and whether its body is moistened within 1 minute. If the valve is faulty, it must be replaced.
10. To check the temporary thermal switch, follow the steps described in subparagraphs 3 and 4. The coolant temperature should be 30°C. If it is necessary to cool the switch, remove it and immerse its base in cold water. After cooling, connect the switch to ground.
[The original can be found at www.VWManual.ru]
11. Run the starter for 10 seconds. The test lamp should light immediately and burn for 3 seconds.
12. Install the high tension clamp on the distributor and connect the clamp to the cold start valve.
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