1A-89 Engine General Information and Diagnosis:
Idle Air Control System Check
S3RH0B1104048
System / Wiring Diagram
8
With fuel pump operated and fuel return hose blocked by
pinching it, is fuel pressure applied?
Faulty fuel pressure
regulator.
Shortage of fuel or fuel
pump or its circuit
malfunction (refer to
“Fuel Pump and Its
Circuit Check”).
9
1) Operate fuel pump.
2) With fuel return hose blocked by pinching it, check fuel
pressure.
Is it 450 kPa (4.5 kg/cm
2
, 63.9 psi) or more?
Faulty fuel pressure
regulator.
Clogged fuel filter,
restricted fuel feed hose
or pipe, faulty fuel pump
or fuel leakage from
hose connection in fuel
tank.
10 1) Disconnect fuel return hose from pressure regulator and
connect new return hose to it.
2) Insert the other end of new return hose into approved
gasoline container.
3) Check again if specified pressure is obtained.
While doing so, does fuel come out of return hose?
Faulty fuel pressure
regulator.
Fuel leakage from
injector, fuel leakage
from between injector
and delivery pipe, faulty
fuel pump (faulty check
valve in fuel pump) or
fuel leakage from fuel
pressure regulator
diaphragm.
Step
Action
Yes
No
GRN/RED
BLK/YEL
BRN/WHT
BLK/RED
BLK/RED
ECM
C41-6
G04-10
G04-6
G04-5
G03-6
GRY/RED
C41 (31P)
G04 (24P)
G03 (17P)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
28 27
29
30
31
5
6
1
2
3
4
5
6
7
11
12
9
10
11
13 12
14
15
16
16
17
1
2
7
8
13
14
3
4
9
10
15
17
18
8
19
20
21
22
23
24
3
1
2
I2RH0B110083-01
1. IAC valve
2. Main relay
3. To TCM
Summary of Contents for Liana RH418
Page 4: ......
Page 222: ...3A 13 Drive Shaft Axle ...
Page 362: ...5A 136 Automatic Transmission Transaxle ...
Page 370: ...Prepared by 1st Ed Feb 2004 2nd Ed Jul 2006 367 ...
