Air Diverter Valve: Testing and Inspection

Chart C-6D - Electric Diverter Valve Check:

Wiring Diagram for Chart C-6D - Electric Diverter Valve Check:

CHART C-6D - ELECTRIC DIVERTER VALVE CHECK

Test Description:

1. Checks for normal air to ports during open loop operation. This is a short period of time. Prepare to check for AIR distribution prior to start up.

2. Checks for normal switch back to ports when default is added (TPS high in this case).

3. Checks to see if constant port air is from a faulty WOT air relay circuit. If when relay is disconnected and air is diverted back to air cleaner, fault is in WOT circuit. If air remains to ports, fault is in diverter valve circuit or ECM.


4. Checks to see if switch to port air can be made with the WOT function. If air switches, fault is in ECM connection at terminal "B" or ECM. If no switching occurs, it is faulty valve or faulty circuit to ignition.