Suzuki WagonR+ RB310 Service Manual page 727

6-2-156 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
Table B-4 Idle Air Control System Check
5
WHT/BLU
BLK/YEL
6
60A 20A
80A
E23
7 6 5 4 3
17 16 15 14 13 12 11
27 26 25 24 23 22 21
34 33 32 31
1. IAC valve 3. Main relay
2. ECM 4. "IG COIL" fuse
Troubleshooting
Step
1 Check engine idle speed and IAC duty referring
to "Idle Speed/IAC Duty Inspection" in Section
6E2.
Is idle speed within specification?
2 Is IAC duty within specification in Step 1?
3 Is engine idle speed kept specified speed even
with headlight ON?
4 Was idle speed higher than specification in
Step 1?
BLU/BLK
4
3
BLK/YEL
BLK/RED
BLK/YEL
BLK/RED
1
BLK/RED
BLK
E22
2 1 7 6 5 4 3
10 9 8 19 18 17 16 15 14 13 12 11
20 19 18 27 26 25 24 23
30 29 28 35 34 33 32 31
5. Ignition switch
6. Relay box
Action
2
BLK/WHT E21-28
BLU/BLK E23-15
BLK/RED E21-6
BLK/RED
E21-5
GRN/YEL E23-8
E21
2 1 6 5 4 3 2
10 9 8 16 15 14 13 12 11 10 9 8
22 21 20 27 26 25 24 23 22 21 20 19
30 29 28 35 34 33 32 31 30
Yes
Go to Step 2.
Go to Step 3.
System is in good condi-
tion.
Go to Step 5.
E22-1 BLK
E23-2
BLK/YEL
E23-1
BLK/YEL
12V 5V
1
7
18 17
29 28
Go to Step 4.
Check for followings:
• Vacuum leak
• EVAP canister purge
control system
• Clog of IAC air passage
• Accessory engine load
• "Table B-6 Electric
Load Signal Circuit
Check" Closed throttle
position (TP sensor)
• Stuck to PCV valve
Go to Step 6.
Go to Step 6.
No