Camry LE Sedan 4-Door L4-2164cc 2.2L DOHC MFI (1997)
Idle Speed/Throttle Actuator - Electronic: Component Tests and General Diagnostics
ON-VEHICLE INSPECTION
1. Inspect IAC valve operation.
(a) Initial conditions:
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Engine at normal operating temperature
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Idle speed set correctly
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Transmission in neutral position
(b) Using SST, connect terminals TE1 and E1 of the DLC1. SST 09843-18020
(c) After engine rpm is kept at 900- 1,300 rpm for 5 seconds, check that it returns to idle speed.
If the rpm operation is not as specified, check the IAC valve, wiring and ECM.
(d) Remove the SST from the DLC1. SST 09843-18020
2. Inspect IAC valve resistance.
NOTICE: "Cold" and "Hot" in these sentences express the temperature of the coils themselves. "Cold" is from -10°C (14°F) to 50°C (122°F) and
"Hot" is from 50°C (122°F) to 100°C (212°F).
(a) Disconnect the IAC valve connector.
Ohmmeter Connection
Reference
(b) Using an ohmmeter, measure the resistance between terminal +B and other terminals (ISCC, ISCO).
If the resistance is not as specified, replace the IAC valve.
(c) Reconnect the IAC valve connector.
