1A-124 Engine General Information and Diagnosis:
DTC Troubleshooting
NOTE:
• Before performed trouble shooting, be sure to read the “Precautions of ECM Circuit Inspection: ”.
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to “Inspection of ECM and Its Circuits: ”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and
confirm that the trouble has been corrected.
Step
Action
Yes
No
1
Was “Engine and Emission Control System Check”
performed?
Go to Step 2.
Go to “Engine and
Emission Control
System Check: ”.
2
Do you have SUZUKI scan tool?
Go to step 3.
Go to step 4.
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 displayed
on SUZUKI scan tool.
Is 100% displayed?
Go to Step 5.
Intermittent trouble or
faulty ECM.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection: in Section
00”.
4
Fuel level sensor output signal check
1) Turn OFF ignition switch.
2) Remove ECM from its bracket with ECM connector
connected.
3) Turn ON ignition switch and measure voltage between
“E23-24” terminal of ECM connector and vehicle body
ground.
Is voltage about 3.5 V or less?
Go to Step 5.
Intermittent trouble or
faulty ECM.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection: in Section
00”.
5
Fuel level sensor output signal circuit check
1) Disconnect fuel pump connector referring to “Fuel Tank
Removal and Installation: in Section 1G”.
2) Disconnect connectors from ECM with ignition switch
turned OFF.
3) Measure resistance between “E23-24” terminal of ECM
connector and vehicle body ground.
Is it infinity?
Go to Step 6.
“YEL/RED” wire is
shorted to ground
circuit.
6
Fuel level sensor output signal circuit check
1) Connect connectors to ECM.
2) Measure voltage between “E23-24” terminal of ECM
connector and engine ground with ignition switch turned
ON.
Is voltage 10 – 14 V?
Go to Step 7.
Substitute a known-
good ECM and recheck.
7
Fuel level sensor check
1) Check fuel level sensor referring to “Fuel Level Sensor
Is it in good condition?
Substitute a known-
good ECM and recheck.
Faulty fuel level sensor.
Содержание SWIFT RS415 2017
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