Suzuki Ignis Service Manual page 3337

6-136 ENGINE GENERAL INFORMATION AND DIAGNOSIS
Step
4 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 it 3% or less?
5 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 more?
6 Fuel Level Sensor Circuit Resistance Check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection to "G91-14" wire termi-
nal of ECM connector.
3) If OK, measure resistance between "G91-14" wire
terminal of ECM connector and vehicle body ground.
Is resistance below 280 Ω?
7 Fuel Level Sensor Output Signal Circuit Check for Short
1) Disconnect connectors from combination meter refer-
ring to "Combination Meter Removal and Installation"
in Section 8C.
2) Turn ON ignition switch and measure voltage
between "G91-14" wire terminal of ECM connector
and vehicle body ground.
Is voltage 0 V?
8 Check ECM Voltage
1) Connect connectors to ECM with ignition switch
turned OFF.
2) Turn ON ignition switch and measure voltage
between "G91-14" wire terminal of ECM connector
and vehicle body ground.
Is voltage below 0.1 V?
9 Fuel Level Sensor Output Signal Circuit Check for Open
1) Turn OFF ignition switch and then disconnect combi-
nation meter connector referring to "Combination
Meter Removal and Installation" in Section 8C.
2) Check for proper connection to "YEL/RED" wire ter-
minal of combination meter connector.
3) If OK, measure resistance between "G91-14" wire
terminal of ECM connector and "YEL/RED" wire ter-
minal of combination meter connector.
Is resistance below 10 Ω?
Action Yes
Go to Step 6.
Go to Step 6.
Go to Step 7.
Go to Step 8.
Faulty combination
meter.
Go to Step 10.
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.
Go to Step 9.
"YEL/RED" wire
shorted to power
supply circuit.
Substitute a
known-good ECM
and recheck.
"YEL/RED" wire in
open or high resis-
tance circuit at
between ECM wire
terminal and com-
bination meter wire
terminal.