Suzuki Baleno Manual page 1324

6-1-94 ENGINE GENERAL INFORMATION AND DIAGNOSIS (G13/G16 ENGINE WITH WU TWC)
DTC P0505
INSPECTION
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Check Idle Air Control System.
1) Connect SUZUKI scan tool to DLC with ignition
switch OFF, set parking brake and block drive
wheels.
2) Warm up engine to normal operating tempera-
ture.
3) Clear DTC and select "MISC TEST" mode on
SUZUKI scan tool. See Fig. 1.
Is it possible to control (increase and reduce) en-
gine idle speed by using SUZUKI scan tool?
Is check result satisfactory?
3 Check Wire Harness for Open and 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 ECM (PCM) connector.
5) Check for proper connection to ECM (PCM) at
C21-6 terminal.
6) If OK, check "R / B", "V / W" and "B" circuit for
open and short.
Are they in good condition?
Fig.1 for Step 1
ACTION YES
Go to Step 2.
Intermittent trouble or
faulty ECM (PCM).
Check for intermittent
referring to "Intermittent
and Poor Connection" in
Section 0A.
Replace IAC valve and
recheck.
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Go to Step 3.
Repair or replace.