toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Auxiliary Air Valve (Idle Speed)|Specifications|Page 1398 > < Auxiliary Air Valve (Idle Speed)|Specifications|Page 1396
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Auxiliary Air Valve (Idle Speed): Testing and Inspection

ON-VEHICLE CHECK

1. CHECK OPERATION OF AIR VALVE

Check the engine RPM by pinching shut the air hose.

At Low Temp. (Coolant Temperature: below 60°C or a 140°F)
^

When the hose is pinched, the engine rpm should drop.

After warm-up
^

When the hose is pinched, check that the engine rpm does not drop more than 50 rpm.

2. MEASURE RESISTANCE OF AIR VALVE

Using an ohmmeter, measure the heat coil resistance of the air valve.

Resistance (Ep-E1): 39 - 59 ohms 

INSPECTION OF AIR VALVE (REMOVED)

CHECK OPENING CONDITION OF AIR VALVE 

Auxiliary Air Valve (Idle Speed)|Specifications|Page 1398 > < Auxiliary Air Valve (Idle Speed)|Specifications|Page 1396