Suzuki Wagon R Manual page 2160

Step
5 Check A/C (input) signal circuit referring to Step
1 of "Table B-5 A/C Signal Circuit Check", if
equipped.
Is it in good condition?
6 Check Idle Air Control system.
1) Remove IAC valve from throttle body refer-
ring to "IAC Valve Removal and Installation"
in Section 6E2.
2) Check IAC valve for operation referring to
"IAC Valve Inspection" in Section 6E2. See
Fig. 1.
Is check result satisfactory?
7 Check Wire Harness for Open or Short.
1) Turn ignition switch OFF.
2) Disconnect IAC valve connector.
3) Check for proper connection to IAC valve at
each terminals.
4) If OK, disconnect connectors from ECM.
5) Check for proper connection to ECM at
"E23-28" terminal.
6) If OK, check "BLK/RED" and "GRN/YEL" cir-
cuit for open or short.
Are they in good condition?
ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-157
Action
[A]: Fig. 1 for Step 6
Yes
Go to Step 6.
Intermittent trouble or
faulty ECM.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection" in Section 0A.
Replace IAC valve and
recheck.
No
Repair or replace A/C sig-
nal circuit or A/C system.
Go to Step 7.
Repair or replace.