Suzuki SY413 Service Manual page 2709

6-1-110 ENGINE GENERAL INFORMATION AND DIAGNOSIS (G13/G16 ENGINE WITH WU TWC)
STEP
6 Check IAC system referring to Step 2 of DTC P0505
Diag. Flow Table.
Is check result satisfactory?
7 Was IAC duty less than about 3% (or more than about
97% for OFF duty meter) in Step 1 of this table?
8 Check PNP signal ("D" range signal).
1) Connect SUZUKI scan tool to DLC with ignition
switch OFF.
2) Turn ignition switch ON and check PNP signal
("P / N" and "D" range) on display when shifting se-
lector lever to each range.
Is "D" range on display no matter which of "R", "D", "2"
and "L" range positions selector lever may be at?
Is "P / N" range on display when selector lever is at
one of "R", "D", "2" and "L" range position only?
See Fig. 1.
9 Check IAC system referring to Step 2 of DTC P0505
Diag. Flow Table.
Is check result satisfactory?
Was IAC duty more than about 30% or :40% (or less
10
than 70% or :60% for OFF duty meter) in Step 1 of
this table?
NOTE:
Duty value with (:) are applicable to vehicle used
at high altitude (higher than 2000 m or 6560 ft).
Fig.1 for Step 8
Scan tool
SUZUKI
SCAN TOOL
Selector
DISPLAY
lever position
"P" and "N"
P/N range
range
"R", "D", "2"
D range
and "L" range
ACTION YES
Go to Step 7.
Check abnormal air in-
haling from air intake
system, PCV valve
and EVAP canister
purge control system.
Go to Step 9.
Go to Step 10.
Check parts or system
which can cause en-
gine low idle.
– Accessory engine
load
– Clog of air passage
– Etc.
NO
Go to Step 3 of DTC
P0505 Diag. Flow
Table.
Check TP sensor
(closed throttle posi-
tion) and ECT sensor
for performance.
If sensors are OK,
substitute a known-
good ECM (PCM).
Repair or replace.
Go to Step 3 of DTC
P0505 Diag. Flow
Table.
Substitute a known-
good ECM (PCM) and
recheck.