Dtc P0463: Fuel Level Sensor Circuit High - Suzuki Grand Vitara Service Manual

DTC P0463: Fuel Level Sensor Circuit High

Wiring Diagram
Refer to "DTC P0462: Fuel Level Sensor Circuit Low: ".
DTC Detecting Condition and Trouble Area
DTC detecting condition
Fuel level sensor voltage is higher than specified value for 3
seconds continuously.
(1 driving cycle detection logic but MIL does not light up)
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and run it for 30 sec. or more.
4) Check DTC and pending DTC.
DTC Troubleshooting
NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
"Precautions For DTC Troubleshooting: ".
Step
1 Was "Engine and Emission Control System Check"
performed?
2 Does fuel level meter in combination meter indicate "E"
(empty)?
3 Do you have SUZUKI scan tool?
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 displayed
on SUZUKI scan tool.
Is it 3% or less?
5 Fuel level sensor output signal check
1) Turn OFF ignition switch.
2) Remove ECM from its bracket with ECM connectors
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 more?
6 Fuel level sensor circuit resistance check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection to "E23-24" terminal of
ECM connector.
3) If OK, measure resistance between "E23-24" terminal of
ECM connector and vehicle body ground.
Is resistance below 280
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Action
Ω
?
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Engine General Information and Diagnosis:
• ECM power and/or ground circuit malfunction
• ECM malfunction
• Fuel level sensor and/or its circuit malfunction
Yes
Go to Step 2.
Replenish fuel tank with
fuel and go to Step 3.
Go to Step 4.
Go to Step 6.
Go to Step 6.
Go to Step 7.
1A-144
S5JB0A1104095
Trouble area
No
Go to "Engine and
Emission Control
System Check: ".
Go to Step 3.
Go to Step 5.
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection: in Section
00".
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection: in Section
00".
Go to Step 8.