Avalon V6-3.0L (1MZ-FE) (1996)
Idle Speed/Throttle Actuator - Electronic: Component Tests and General Diagnostics
On-Vehicle Inspection
ON-VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION.
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Initial conditions:
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Engine at normal operating temperature
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Idle speed check correctly
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Transmission in neutral position
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A/C switch OFF
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Using a jumper wire (or SST 09843-18020), connect terminals TE1 and E1 of the DLC1.
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After engine speed is kept at approx. 1 000 rpm for 5 seconds, check that it returns to idle speed.
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If the engine speed operation is not as specified, check the IAC valve, wiring and ECM.
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Remove the jumper from the DLC1.
2. INSPECT IAC VALVE RESISTANCE.
NOTICE: Cold and Hot in the following sentences express the temperature of the coils themselves.
Cold is from -10°C (14°F) to 5O°C (122°F)
Hot is from 50°C (122°F) to 100°C (212°F).
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Disconnect the IAC valve connector.
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Using an ohmmeter, measure the resistance between terminal +B and other terminals (RSC, RSO).
Resistance:
Cold: 17.0 - 24.5 Ohms
Hot: 21.5 - 28.5 Ohms
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If resistance is not as specified, replace the IAC valve.
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Reconnect the IAC valve connector.
3. INSPECT AIR ASSIST SYSTEM.
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Initial conditions:
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Engine at normal operating temperature
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Idle speed check correctly
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Transmission in neutral position
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A/C switch OFF