ENGINE CONTROLS 1F–223
DAEWOO M-150 BL2
DTC P0463 – Fuel Level Sensor High Voltage
Step Action Value(s) Yes No
1
Perform an Euro On-Board Diagnostic (EOBD)
System Check.
Is the system check complete?
–
Go to Step 2
Go to
“On-Board
Diagnostic
System Check”
2
1. Turn the ignition switch to ON.
2. Install a scan tool.
3. Operate the vehicle within Freeze Frame
conditions as noted.
Is the Diagnostic Trouble Code (DTC) P0463 set?
–
Go to Step 3
Go to
“Diagnostic
Aids”
3
1. Disconnect the fuel sender electrical connector
from the fuel pump.
2. Using a digital voltmeter (DVM), measure the
voltage in the signal circuit at terminal 1.
Is the voltage within the specified value? 0.2–4.9V Go to Step 4 Go to Step 6
4
Check for a proper ground connection at the fuel
tank and repair as necessary.
Is a repair necessary?
–
Go to Step 11 Go to Step 5
5
1. Remove the fuel sender from the fuel tank.
2. Reconnect the fuel pump electrical connector.
3. Monitor the Fuel Level Sensor parameter on the
scan tool while moving the Fuel Level Sensor
float from the empty position to the full position.
4. Repeat the procedure several times.
Does the Fuel Level Sensor value on the scan tool
increase and then decrease steadily when the float
is moved?
–
Go to
“Diagnostic
Aids” Go to Step 8
6
Check for an open or short to battery voltage in the
Fuel Level Sensor circuit and repair as necessary.
Is the repair necessary?
–
Go to Step 11 Go to Step 9
7
Repair the open or short to battery voltage in the
Fuel Level Sensor circuit between the Fuel Level
Sensor harness connector and the Fuel Level
Sensor.
Is the repair complete?
–
Go to Step 11
–
8
Replace the fuel sender assembly.
Is the replacement complete?
–
Go to Step 11
–
9
1. Connect the fuel pump electrical connector.
2. Disconnect the engine control module(ECM)
connector.
3. Using a digital voltmeter (DVM) measure the
voltage in the signal circuit, at terminal 81.
Does the DVM read within the specified value? 0.2–4.9V Go to Step 10
Go to
section 9E,
Instrumenta-
tion/Driver
Information
10
Replace the ECM.
Is the repair complete?
–
Go to Step 11
–
11
1. Using the scan tool, clear the Diagnostic Trouble
Codes (DTCs).
2. Start the engine and idle at normal operating
temperature.
3. Operate the vehicle within the conditions for
setting the DTC as specifiec in the supporting
text.
Does the scan tool indicate that this diagnostic ran
and passed?
–
Go to Step 12 Go to Step 2
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