DTC P0463:00 [PCM (SKYACTIV-G 2.5T)]

id0102s8301700

DTC P0463:00

Fuel gauge sender unit circuit high input
DETECTION CONDITION
•  The PCM monitors the fuel level signal and fuel gauge sender unit output voltage from the instrument cluster. If the PCM detects that the fuel level, fuel gauge sender unit, or fuel gauge sender unit (sub) output voltage is too high, the PCM determines that the fuel gauge sender unit or fuel gauge sender unit (sub) circuit has a malfunction.
Diagnostic support note
•  This is a continuous monitor (CCM).
•  The check engine light does not illuminate. (Except Taiwan)
•  The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. (Taiwan)
•  FREEZE FRAME DATA is not available. (Except Taiwan)
•  FREEZE FRAME DATA is available. (Taiwan)
•  Snapshot data is available.
•  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
•  Not applicable
POSSIBLE CAUSE
•  Fuel gauge sender unit connector or terminals malfunction
•  Fuel gauge sender unit (sub) connector or terminals malfunction
•  Rear body control module (RBCM) connector or terminals malfunction
•  Short to power supply in wiring harness between the following terminals:
?  Fuel gauge sender unit terminal D—Rear body control module (RBCM) terminal 3I
?  Fuel gauge sender unit (sub) terminal A—Rear body control module (RBCM) terminal 3K
•  Open circuit in wiring harness between the following terminals:
?  Fuel gauge sender unit terminal D—Rear body control module (RBCM) terminal 3I
?  Fuel gauge sender unit terminal C—Rear body control module (RBCM) terminal 3C
?  Fuel gauge sender unit (sub) terminal A—Rear body control module (RBCM) terminal 3K
?  Fuel gauge sender unit (sub) terminal B—Rear body control module (RBCM) terminal 3C
•  Fuel gauge sender unit malfunction
•  Fuel gauge sender unit (sub) malfunction
•  Rear body control module (RBCM) malfunction
•  Instrument cluster malfunction
•  PCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture function of the PC.
•  Record the FREEZE FRAME DATA/snapshot data on the repair order.
—
Go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT FUEL GAUGE SENDER UNIT CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the fuel gauge sender unit connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 13.
No
Go to the next step.
4
INSPECT FUEL GAUGE SENDER UNIT (SUB) CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the fuel gauge sender unit (sub) connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 13.
No
Go to the next step.
5
INSPECT REAR BODY CONTROL MODULE (RBCM) CONNECTOR CONDITION
•  Disconnect the rear body control module (RBCM) connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 13.
No
Go to the next step.
6
INSPECT FUEL GAUGE SENDER UNIT SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
•  Verify that the fuel gauge sender unit and rear body control module (RBCM) connectors are disconnected.
•  Switch the ignition ON (engine off).
Note
•  Another DTC may be stored by the PCM detecting an open circuit.
•  Measure the voltage at the fuel gauge sender unit terminal D (wiring harness-side).
•  Is the voltage 0 V?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between fuel gauge sender unit terminal D and rear body control module (RBCM) terminal 3I.
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to power supply.
Go to Step 13.
7
INSPECT FUEL GAUGE SENDER UNIT (SUB) SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
•  Verify that the fuel gauge sender unit (sub) and rear body control module (RBCM) connectors are disconnected.
•  Switch the ignition ON (engine off).
Note
•  Another DTC may be stored by the PCM detecting an open circuit.
•  Measure the voltage at the fuel gauge sender unit (sub) terminal A (wiring harness-side).
•  Is the voltage 0 V?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between fuel gauge sender unit (sub) terminal A and rear body control module (RBCM) terminal 3K.
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to power supply.
Go to Step 13.
8
INSPECT FUEL GAUGE SENDER UNIT CIRCUIT FOR OPEN CIRCUIT
•  Verify that the fuel gauge sender unit and rear body control module (RBCM) connectors are disconnected.
•  Switch the ignition off.
•  Inspect for continuity between the following terminals (wiring harness-side):
?  Fuel gauge sender unit terminal D—Rear body control module (RBCM) terminal 3I
?  Fuel gauge sender unit terminal C—Rear body control module (RBCM) terminal 3C
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  Fuel gauge sender unit terminal D—Rear body control module (RBCM) terminal 3I
•  Fuel gauge sender unit terminal C—Rear body control module (RBCM) terminal 3C
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to Step 13.
9
INSPECT FUEL GAUGE SENDER UNIT (SUB) CIRCUIT FOR OPEN CIRCUIT
•  Verify that the fuel gauge sender unit (sub) and rear body control module (RBCM) connectors are disconnected.
•  Switch the ignition off.
•  Inspect for continuity between the following terminals (wiring harness-side):
?  Fuel gauge sender unit (sub) terminal A—Rear body control module (RBCM) terminal 3K
?  Fuel gauge sender unit (sub) terminal B—Rear body control module (RBCM) terminal 3C
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  Fuel gauge sender unit (sub) terminal A—Rear body control module (RBCM) terminal 3K
•  Fuel gauge sender unit (sub) terminal B—Rrear body control module (RBCM) terminal 3C
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to Step 13.
10
INSPECT FUEL GAUGE SENDER UNIT
•  Inspect the fuel gauge sender unit or fuel gauge sender unit (sub).
•  Is there any malfunction?
Yes
Replace the fuel gauge sender unit or fuel gauge sender unit (sub), then go to Step 13.
(See FUEL GAUGE SENDER UNIT REMOVAL/INSTALLATION [2WD].)
(See FUEL GAUGE SENDER UNIT REMOVAL/INSTALLATION [4WD].)
No
Go to the next step.
11
INSPECT REAR BODY CONTROL MODULE (RBCM)
•  Inspect the rear body control module (RBCM).
•  Is there any malfunction?
Yes
Replace the rear body control module (RBCM), then go to Step 13.
(See REAR BODY CONTROL MODULE (RBCM) REMOVAL/INSTALLATION.)
No
Go to the next step.
12
INSPECT INSTRUMENT CLUSTER
•  Inspect the instrument cluster.
•  Is there any malfunction?
Yes
Replace the instrument cluster, then go to the next step.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
No
Go to the next step.
13
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the KOEO or KOER self test.
•  Is the PENDING CODE for this DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
14
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [PCM (SKYACTIV-G 2.5T)].)
No
DTC troubleshooting completed.