DTC P0462:00 [SKYACTIV-G 1.3, SKYACTIV-G 1.5]

id0102q1301600

DTC P0462:00

Fuel gauge sender unit circuit low 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 a fuel level or fuel gauge sender unit output voltage that is too low, the PCM determines that the fuel gauge sender unit circuit has a malfunction.
Diagnostic support note
•  This is a continuous monitor (CCM).
•  The check engine light does not illuminate.
•  FREEZE FRAME DATA is not available.
•  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
•  BCM connector or terminals malfunction
•  Short to ground in wiring harness between fuel gauge sender unit terminal D and BCM terminal 2Q
•  Fuel gauge sender unit signal circuit and ground circuit are shorted to each other
•  Fuel gauge sender unit malfunction
•  BCM 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 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 10.
No
Go to the next step.
4
INSPECT BCM CONNECTOR CONDITION
•  Disconnect the BCM 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 10.
No
Go to the next step.
5
INSPECT FUEL GAUGE SENDER UNIT SIGNAL CIRCUIT FOR SHORT TO GROUND
•  Verify that the fuel gauge sender unit and BCM connectors are disconnected.
•  Inspect for continuity between fuel gauge sender unit terminal D (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Refer to the wiring diagram and verify whether or not there is a common connector between fuel gauge sender unit terminal D and BCM terminal 2Q.
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 ground.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to ground.
Go to Step 10.
No
Go to the next step.
6
INSPECT FUEL GAUGE SENDER UNIT SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER
•  Verify that the fuel gauge sender unit and BCM connectors are disconnected.
•  Inspect for continuity between fuel gauge sender unit terminals D and C (wiring harness-side).
•  Is there continuity?
Yes
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—BCM terminal 2Q
•  Fuel gauge sender unit terminal C—BCM terminal 2R
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 each other.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to each other.
Go to Step 10.
No
Go to the next step.
7
INSPECT FUEL GAUGE SENDER UNIT
•  Inspect the fuel gauge sender unit.
•  Is there any malfunction?
Yes
Replace the fuel gauge sender unit, then go to Step 10.
(See FUEL PUMP UNIT DISASSEMBLY/ASSEMBLY [SKYACTIV-G 1.3, SKYACTIV-G 1.5].)
No
Go to the next step.
8
INSPECT BCM
•  Inspect the BCM.
•  Is there any malfunction?
Yes
Replace the BCM, then go to Step 10.
(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)
No
Go to the next step.
9
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.
10
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.
11
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [SKYACTIV-G 1.3, SKYACTIV-G 1.5].)
No
DTC troubleshooting completed.