| 1. Disconnect a wire from the plug - the storage battery. |
| 2. Disconnect from the valve of pressure of pressurisation колодку with wires. |
| 3. Connect an ohmmeter to contacts of the valve and measure resistance, it should make 14–20 Ohm. If resistance of the valve differs from specified, replace the valve. |
| 4. Check up pressure of a food of the valve. For this purpose connect the voltmeter to contact 1 колодки, disconnected from the valve, and "weight" of the engine. Include ignition, the voltmeter should show pressure of the storage battery. Otherwise check up wires on breakage and short circuit. |
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