Idle Air Control Valve - Fast Idle Control Device (IACV-FICD)

COMPONENT DESCRIPTION
When the air conditioner is on, the IAC valve-FICD solenoid valve supplies additional air to adjust to the increased load.




ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and 43 (ECM ground).







WIRING DIAGRAM

1 CHECK OVERALL FUNCTION:

2 CHECK AIR CONDITIONER FUNCTION:

3 CHECK POWER SUPPLY:

4 DETECT MALFUNCTIONING PART:

5 CHECK GROUND CIRCUIT:

6 DETECT MALFUNCTIONING PART:

7 CHECK INPUT SIGNAL CIRCUIT:

8 DETECT MALFUNCTIONING PART:

9 CHECK A/C AUTO AMP:

10 CHECK GROUND CIRCUIT:

11 DETECT MALFUNCTIONING PART:

12 CHECK INPUT SIGNAL CIRCUIT:

13 DETECT MALFUNCTIONING PART:

14 CHECK AMBIENT AIR TEMPERATURE SWITCH:

15 CHECK IACV-FICD SOLENOID VALVE:

16 CHECK INTERMITTENT INCIDENT:

DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION




IACV-FICD SOLENOID VALVE
Disconnect IACV-FICD solenoid valve harness connector.
- Check for clicking sound when applying 12 V direct current to terminals.




- Check plunger for seizing or sticking.
- Check for broken spring.