200SX L4-1998cc 2.0L DOHC MFI (SR20DE) (1995)
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Idle Speed/Throttle Actuator - Electronic: Component Tests and General Diagnostics
IDLE AIR CONTROL VALVE (IACV) - AUXILIARY AIR CONTROL (AAC) VALVE
1) Disconnect IACV-AAC valve harness connector.
2) Check IACV-AC valve resistance.
Resistance:
Approximately 10 ohms [at 25°C (77°F)]
3) Check plunger for seizing or sticking.
4) Check for broken spring.