Auxiliary Air Device

NOTE: The following tests are to be performed on a cold engine.
1. Remove the auxiliary air device.
2. Reconnect the connector to the auxiliary air device.
3. At a temperature of 20°C, the opening of the diaphragm must be visible.
4. Turn the ignition on. Approximately five minutes later, the diaphragm should close off the opening.
5. If the auxiliary air device does not work, proceed as follows:
6. Feed the auxiliary air device directly with harness (-).0141BH.
7. Five minutes after voltage has been applied the diaphragm should completely close off the opening.
8. If the auxiliary air device does not operate satisfactorily, replace it.
9. If the auxiliary air device performs properly, check its electrical circuit.
10. Check the battery to make sure it is fully charged.

Fig. 24 Auxiliary Air Valve and Connector:

11. Check to see that 12 volts of energy is available at the auxiliary air valve connector (U1), Fig. 24
12. Check the ground circuit for continuity using an ohmmeter. Resistance value should be less than 1 ohm.
13. If the above values are not correct repair the faulty circuit.