P0461
Fuel Gauge Unit Circuit:
Connectors:
CIRCUIT OPERATION
- The fuel gauge drive signal is input in ECM (terminal No.97)
TECHNICAL DESCRIPTION
- Branch the drive signal from the fuel gauge circuit, and input it into ECM
- The ECM
DTC SET CONDITIONS
Check Conditions, Judgement Criteria
- When the fuel consumption calculated from the operation time of the injector amounts to 20 litre, the diversity of the amount of fuel in tank calculated from the fuel level sensor is 2 liter 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.
Connectors:
STEP 2. Check for short circuit to ground between fuel gauge unit connector D-17 (terminal No.2) and ECM connector C-122 (terminal No.97)
NOTE: Check harness after checking intermediate connectors C-210, and C-25. 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 INSTRUMENT PANEL SYSTEMS - COMBINATION METERS ASSEMBLY AND VEHICLE SPEED SENSOR - TROUBLE SYMPTOM CHART.
NO: Repair it. Then go to Step 6.
Connectors:
STEP 3. Check connector C-122 at ECM
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.
Connectors:
STEP 4. Check for open circuit or harness damage between fuel gauge unit connector D-17 (terminal No.2) and ECM connector C-122 (terminal No.97)
NOTE: Check harness after checking intermediate connectors C-210, and C-25. 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. Check the trouble symptoms.
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 GROUP 00, How to Use Troubleshootingi Inspection Service Points.
STEP 6. Test 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: Retry the troubleshooting.
NO: The inspection is complete.