Suzuki GA413, Service Manual

Page: 868 / 1246

6-92 ENGINE GENERAL INFORMATION AND DIAGNOSIS
GA413
supple
TABLE B-1 FUEL INJECTOR CIRCUIT CHECK
1. No.1 injector
2. No.2 injector
3. No.3 injector
4. No.4 injector
INSPECTION
STEP ACTION YES NO
1 Was “ENGINE DIAG. FLOW TABLE” performed? Go to Step 2. Go to “ENGINE DIAG.
FLOW TABLE”.
2 Check Injector for Operating Sound.
Using sound scope, check each injector for operating
sound at engine cranking.
Do all 4 injector make operating sound? Fuel injector circuit is
in good condition. Go to Step 3.
3 Dose none of 4 injectors make operating sound at
Step 2? Go to Step 4. Check coupler
connection and wire
harness of injector not
making operating
making o erating
sound and injector it-
self (Refer to Section
6E).
4 Check power circuit of injectors for open and short.
Is it normal? Check all 4 injectors
for resistance
respectively.
If resistance is OK,
substitute a known-
good ECM and
recheck. Power circuit open or
short.