| 1. If you think that the system is faulty, disconnect the hose from the solenoid control valve air inlet and check that they are not clogged by blowing them. The solenoid valve is located on the left side of the intake manifold and the air inlet valve is located on the left front suspension bracket. |
| 2. The solenoid valve can be checked as follows. If you want, the valve can be removed through the instructions in Section 6.4.2.6.1 to improve access. |
 | 3. Connect the power supply 12 volts to the solenoid valve, as shown for models with a carburettor engine and a catalytic converter. Blow nozzle in 'A' - the air must pass through the valve and out through the outlet 'B'. Blow into the tube "B" and check that the valve does not pass air. |
| 4. If the solenoid valve does not work as expected, then it is defective and must be replaced. |
| 5. To check the air intake valve, first remove it, the instructions given in section 6.4.2.6.2, and then check it in the following way. |
 | 6. Blow into the tube "B" and check that the valve does not leak air. Evacuate the air from the tube "A" into the tube and Blow "B" - the air must pass through the valve and out of nozzle "C". Blow into the tube "C" and check that the air does not flow through the valve in both cases, there is a bend "A" vacuum or not. |
| 7. If the valve is not working as expected, then it is defective and must be replaced. |
