|  1. Disconnect vacuum hoses. | 
 
 
 | 2. Blow the electromagnetic valve and be convinced that air does not pass. | 
 
 
  | 
 3. Disconnect the socket from the electromagnetic valve. | 
 
 
  | 
 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, |