IDLE AIR CONTROL (IAC) [WITHOUT WU-TWC]
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Outline
• The function of the IAC is essentially carried over from that of the previous Mazda 121 121DEMIO (DW) models except for the following:
- Target engine speed is different in order to match the vehicle characteristics.
Target Engine Speed
Condition
Idle speed (rpm)
ATX
MTX
P, N position
Except P, N position
No load
700
650 (ZY)
675 (ZJ)
700
A/C is operating. (Middle pressure switch OFF)
700
650 (ZY)
675 (ZJ)
700
A/C is operating. (Middle pressure switch ON)
750
750
750
Electrical load is on.*
750
750
750
P/S is operating.
750
750
750
*
:
The headlight, rear defroster, blower fan (2-step or more), cooling fans No.1 and 2 are on.