Suzuki Ignis Service Manual page 3335

6-134 ENGINE GENERAL INFORMATION AND DIAGNOSIS
Step
3 Fuel Level Sensor Output Signal Check with Suzuki
Scan Tool
1) Connect Suzuki Scan Tool to DLC with ignition
switch turned OFF.
2) Turn ON ignition switch and check fuel level dis-
played on Suzuki Scan Tool.
Is 100% displayed?
4 Fuel Level Sensor Output Signal Check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Remove ECM from vehicle body and then connect
connectors to ECM.
3) Turn ON ignition switch and measure voltage
between "G91-14" wire terminal of ECM connector
and vehicle body ground.
Is voltage about 3.5 V or less?
5 Fuel Level Sensor Output Signal Circuit Check
1) Disconnect connectors from combination meter refer-
ring to "Combination Meter Removal and Installation"
in Section 8C.
2) Remove fuel pump referring to "Fuel Pump Assembly
Removal and Installation" in Section 6C.
3) Disconnect connectors from ECM.
4) Measure resistance between "G91-14" wire terminal
of ECM connector and vehicle body ground.
Is it infinite?
6 Combination Meter Check
1) Check fuel gauge referring to Fuel Gauge Inspection"
in Section 8C.
Is it in good condition?
7 Check Fuel Level Sensor
1) Check fuel level sensor referring to "Fuel Level Sen-
sor (Gauge Unit) Inspection" in Section 8C.
Is it in good condition?
Action Yes
Go to Step 5.
Go to Step 5.
Go to Step 6.
Go to Step 7.
Substitute a known-
good ECM and
recheck.
No
Intermittent trouble
or faulty ECM.
Check for intermit-
tent referring to
"Intermittent and
Poor Connection"
in Section 0A.
Intermittent trouble
or faulty ECM.
Check for intermit-
tent referring to
"Intermittent and
Poor Connection"
in Section 0A.
"YEL/RED" wire
shorted to ground
circuit.
Faulty combina-
tion meter.
Faulty fuel level
sensor.