| 1. Disconnect vacuum hoses. |
| 2. Blow the electromagnetic valve and be convinced that air does not pass. |
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3. Disconnect the socket from the electromagnetic valve. |
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4. Additional wires submit on the valve tension of the storage battery and grounding, as is shown in drawing. |
| 5. Blow the electromagnetic valve and be convinced that air passes. |
| 6. Otherwise replace knot of the electromagnetic valve, |