Suzuki RA410 Manual page 404

TABLE B-4 IAC SYSTEM CHECK (CONTINUED)
STEP
3 Is engine idle speed kept at specified
speed even with A/C switch turned ON?
Engine idle speed
4 1) Check IAC valve for its resistance, re-
ferring to IAC VALVE INSPECTION in
this section.
2) Is it in good condition?
5 Check "R/B", "R/W", "R/B", "R/Y" and
"B/R" wire for open and short.
Are they in good condition?
6 Check TP sensor for adjusting properly by
referring TP SENSOR ADJUSTMENT.
Is it adjusted properly?
7 Check fuel cut operation by referring to
FUEL CUT OPERATION INSPECTION.
Is fuel cut operation in good condition?
Fig. for Step 2
1
6
ACTION
: 900 – 1000 rpm
4
2
3
5
ENGINE AND EMISSION CONTROL SYSTEM 6E1-39
YES
IAC system is in good condi-
tion.
Go to step 5.
Go to step 6.
Go to Step 7.
Proceed to IMPROPER EN-
GINE IDLE SPEED in DIAG-
NOSTIC TABLE.
Inspect items other than
FAULTY IDLE AIR CON-
TROL SYSTEM.
NO
Go to step 4.
Faulty IAC valve.
Repair or replace.
Adjust correctly.
Substitute a known-good
ECM/PCM and recheck.