| 1. Disconnect a wire from the plug - the storage battery. |
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2. Disconnect колодку 1 with wires from the valve 2 (3 – an ohmmeter). |
| 3. Connect to contacts of the valve an ohmmeter and measure resistance, it should be equal 14–20 Ohm. Its bottom limit corresponds to resistance of the cold valve, top – to resistance at working temperature. |
| 4. If resistance of the valve differs from specified, replace the valve. |
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