Suzuki 2000 Grand Vitara SQ625 Service Manual page 233

6-1-122 ENGINE (H25 ENGINE)
TROUBLESHOOTING
STEP
1 Fuel Pump Operation check:
(1) Remove fuel filler cap.
(2) Turn On ignition switch.
Is fuel pump operation sound heard for 3 sec. after
ignition switch ON?
2 Fuel Pump Circuit check:
(1) With ignition switch OFF, remove fuel pump relay
from relay box.
(2) Using service wire (1), connect E07-6 and E07-7.
Is fuel pump operation sound heard with ignition switch
ON?
3 Fuel Pump Relay check:
(1) Check fuel pump relay referring to "ENGINE AND
EMISSION CONTROL" section.
Is it in good condition?
Fig. for STEP 2
Left hand steering vehicle
ACTION
Right hand steering vehicle
1. Service wire
YES
Fuel pump circuit
is in good condition.
Go to Step 3.
"B/W", "W/G" wire
open.
NO
Go to Step 2.
"Bl/B", "P/B" wire
open.
"B" wire open, poor
12 connection.
Fuel pump
malfunction.
Faulty fuel pump
relay.