Suzuki WagonR+ RB310 Service Manual page 1854

TABLE B-1 FUEL INJECTOR CIRCUIT CHECK
Main
fuse
INSPECTION
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Injector Circuit Check
1) Check injector circuit for short.
Is fuel injected from injector at ignition switch ON?
3 Injector Check
1) Check injector for fuel Injection referring to FUEL
INJECTOR ON-VEHICLE INSPECTION in
Section 6E1.
Is fuel injected from injector at engine cranking?
4 Injector Leakage Check
1) Check injector for leaks referring to FUEL
INJECTOR ON-VEHICLE INSPECTION in
Section 6E1.
Is it in good condition?
5 Check Injector for Operating Sound.
1) Using sound scope, check injector for operating
sound at engine cranking.
Is it detected?
Ignition
"IG
switch
COIL"
Main
relay
"FI"
Injector resistor
ACTION
GENERAL INFORMATION AND ENGINE DIAGNOSIS 6-1-91
To other circuits
Fuel injector
YES
Go to Step 2.
"BLU/WHT" wire
shorted to ground or
faulty injector.
If wire and injector is
as specified
respectively and then
substitute known-
good ECM (PCM) and
recheck.
Go to Step 4.
Injector and its circuit
are in good condition.
Proceed to DIAG.
FLOW TABLE B-2 and
B-3.
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Go to Step 3.
Go to Step 5.
Faulty fuel injector.
Go to Step 6.