Suzuki Liana RH413, Service Manual

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Engine General Information and Diagnosis: 1A-126
Idle Air Control System Check
S3RH0A1104069
System / Wiring Diagram
Troubleshooting
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 3. To TCM
2. Main relay
Step Action Yes No
1 Engine idle speed and IAC duty check
1) Check idle speed / idle air control duty referring to “Idle
Speed / Idle Air Control (IAC) Duty Inspection”.
Is idle speed within specification?
Go to Step 2. Go to Step 4.
2 Is IAC duty within specification in Step 1? Go to Step 3. Check for the
followings: Vacuum
leak, EVAP canister
purge control system,
Clog of IAC air passage,
Accessory engine load,
Closed throttle position
(TP sensor), Stuck of
PCV valve.
3 Is engine idle speed kept specified speed even with
headlight ON? If vehicle with power
steering system, go to
Step 4.
If vehicle without power
steering system, system
is in good condition. Check electric load
signal circuit referring to
“Electric Load Signal
Circuit Check”.
If check result is OK,
check IAC system for
operation referring to
Step 3 or Step 4 of “DTC
P0505: Idle Control
System Malfunction”.