IDLE AIR CONTROL (IAC) BLOCK DIAGRAM [ZJ, Z6]


B3E014000140T08
• The PCM determines the engine operation conditions based on input signals and sends an operation signal to the IAC valve.

1
Neutral switch (MTX)
2
CPP switch (MTX)
3
PSP switch
4
ECT sensor
5
IAT sensor
6
CKP sensor
7
TP sensor
8
MAF sensor
9
BARO sensor
10
Vehicle speed signal
11
TR switch (ATX)
12
Instrument cluster (A/C on request signal)
13
Refrigerant pressure switch (low pressure switch, high pressure switch)
14
Refrigerant pressure switch (medium pressure switch)
15
IAC valve drive time
16
IAC target airflow amount
17
Required volume airflow
18
Required mass
19
Target charging efficiency
20
Basic charging efficiency
21
Corrections
22
IAC valve