P0461

DTC P0461: Fuel Level Sensor Circuit Range/Performance

Fuel Gauge Unit Circuit Part 1:

Fuel Gauge Unit Circuit Part 2:

CIRCUIT OPERATION
- The fuel gauge drive signal is input in ECM (terminal No. 74) or PCM (terminal No. 60) .

TECHNICAL DESCRIPTION
- Branch the drive signal from the fuel gauge circuit, and input it into ECM or PCM.
- The ECM or PCM detects the amount of fuel left in the fuel tank with this signal, and also controls the fuel level warning light.

DTC SET CONDITIONS

Check Conditions, Judgement Criteria
- When the fuel consumption calculated from the operation time of the injector amounts to 20 litter, the diversity of the amount of fuel in tank calculated from the fuel level sensor is 2 litter or less.

TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
- Fuel gauge unit failed.
- Open or shorted fuel gauge unit circuit, or loose connector.
- ECM failed.
- PCM failed.

DIAGNOSIS

STEP 1. Check fuel gauge.

Q: Is the fuel gauge functioning?

YES: Go to Step 3.

NO: Go to Step 2.

STEP 2. Check for short circuit to ground between fuel gauge unit connector D-10 (terminal No. 2) and ECM connector C-115 (terminal No. 74) or PCM connector C-118 (terminal No. 60) .

NOTE: Check harness after checking intermediate connectors C-124, C-127 and D-14. If intermediate connectors are damaged, repair or replace them. Refer to Harness Connector Inspection. Then go to Step 6.

Q: Is the harness wire in good condition?

YES : Refer to Combination Meter.

NO : Repair it. Then go to Step 6.

STEP 3. Check connector C-115 at ECM or connector C-118 at PCM for damage.

Q: Is the connector in good condition?

YES: Go to Step 4.

NO: Repair or replace it. Refer to Harness Connector Inspection. Then go to Step 6.

STEP 4. Check for open circuit or harness damage between fuel gauge unit connector D-10 (terminal No. 2) and ECM connector C-115 (terminal No. 74) or PCM connector C-118 (terminal No. 60) .

NOTE: Check harness after checking intermediate connectors C-124, C-127 and D-14. If intermediate connectors are damaged, repair or replace them. Refer to Harness Connector Inspection. Then go to Step 6.

Q: Is the harness wire in good condition?

YES: Go to Step 5.

NO: Repair it. Then go to Step 6.

STEP 5. Retest the system.
1. Carry out a test drive with the drive cycle pattern. Refer to Trouble Code Diagnosis- OBD-II Drive Cycle - Procedure 6 - Other Monitor.
2. Check the diagnostic trouble code (DTC).

Q: Is DTC P0461 set?

YES: Replace the ECM or PCM. Then go to Step 6.

NO: It can be assumed that this malfunction is intermittent. Refer to How to Use Troubleshooting/Inspection Service Points.

STEP 6. Perform the OBD-II drive cycle.
1. Carry out a test drive with the drive cycle pattern. Refer to Trouble Code Diagnosis- OBD-II Drive Cycle - Procedure 6 - Other Monitor.
2. Check the diagnostic trouble code (DTC).

Q: Is DTC P0461 set?

YES: Repeat the troubleshooting.

NO: The procedure is complete.