Suzuki 2006 SX4, Service Manual

Page: 141 / 1478

Engine General Information and Diagnosis: 1A-97
DTC Confirmation Procedure
1) With ignition switch OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 10 sec.
4) Check DTC and pending DTC.
DTC Troubleshooting
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 Fuel level sensor performance check
1) Check fuel level sensor for performance referring to
“Fuel Level Sensor Inspection in Section 9C”.
Is it in good condition?
Go to Step 3. Replace fuel level
sensor.
3 Wire harness check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper terminal connection to fuel level sensor
and ECM connectors.
3) If connections are OK, check that fuel level sensor circuit
is as follows.
• Wiring harness resistance of fuel level sensor circuit is
less than 3
Ω
.
• Insulation resistance of fuel level sensor circuit is
infinity between fuel level sensor connector and
vehicle body ground.
• Insulation resistance of wire harness is infinity
between fuel level sensor terminal and each other
terminal at fuel level sensor connector.
• Circuit voltage of fuel level sensor circuit is 0 – 1 V
with ignition switch turned ON.
Are they in good condition?
Substitute a known-
good ECM and recheck. Repair or replace
defective wire harness.