Suzuki Baleno Manual page 1830

6E3-38 ELECTRONIC FUEL INJECTION SYSTEM (J18 ENGINE WITHOUT WU TWC)
B-1 FUEL PUMP AND ITS CIRCUIT CHECK
Is fuel pump heard to operate 3 seconds after
ignition switch ON?
1) Remove fuel pump relay from relay box.
2) Using service wire, connect two terminals of relay
box as shown in figure.
CAUTION:
Check to make sure that connection is
made between correct terminals. Wrong
connection can cause damage to ECM,
wire harness, etc.
3) Is fuel pump heard to operate at ignition switch
ON.
Check fuel pump relay referring to "FUEL PUMP
RELAY" in this section.
Is it in good condition?
Poor relay coupler connection "B/W" wire or ''Y/BI"
wire open or poor D9 Connection. If wire and con-
nection are OK, substitute a known-good ECM and
recheck.
NOTE:
Before substituting a known-good ECM, check
to make sure that resistance of coil in relay is
as specified.
NO
YES
YES
1. Fuel pump relay coupler
2. Service wire
NO
"R/B" or "P" wire open, poor fuel pump coupler con-
nection or faulty fuel pump.
NO
Faulty fuel pump relay.
1. ECM
2. ECM coupler
3. Fuel pump relay
4. Fuel pump
5. Main relay
YES
Fuel pump circuit good
condition.