DTC Troubleshooting
DTC DIAGNOSTIC TROUBLESHOOTING CHART
| Step |
Action |
YES |
NO |
| 1 |
Was "Engine and Emission Control System Check" performed? |
Go to Step 2. |
Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK . |
| 2 |
Circuit voltage check
- Remove ECM cover.
- Disconnect connectors from ECM and combination meter with ignition switch turned OFF.
- Turn ignition switch ON.
- Check that fuel level sensor circuit voltage as follows.
- Circuit voltage between fuel level sensor signal circuit and vehicle body ground is 0.8 - 7.3 V at ECM connector.
Is it in good condition? |
Check intermittent trouble referring to INTERMITTENT AND POOR CONNECTION INSPECTION
if intermittent trouble is OK, substitute a known-good ECM and recheck. |
Go to Step 3. |
| 3 |
Circuit resistance check
- Disconnect connectors from combination meter with ignition switch turned OFF.
- Check that fuel level sensor circuit resistance as follows.
- Check resistance between fuel level sensor signal circuit and vehicle body ground is within 15 - 115 Ω at ECM connector.
Is it in good condition? |
Go to Step 4. |
Go to Step 5. |
| 4 |
Circuit check
- Disconnect connectors from combination meter with ignition switch turned OFF.
- Check that fuel level sensor circuit resistance as follows.
- Wire harness resistance between fuel level sensor signal terminal at ECM and fuel level sensor signal terminal at combination meter is less than 2 Ω.
- Circuit voltage between fuel level sensor signal terminal and vehicle body ground is less than 0.3 V with ignition switch turned ON and ECM connector.
Are they in good condition? |
Repair or replace defective wire. |
Faulty combination meter and its power / ground circuit. |
| 5 |
Fuel level sensor check
- Check fuel level sensor for performance referring to FUEL PUMP REMOVAL AND INSTALLATION
.
Is it in good condition? |
Repair or replace fuel level sensor signal and ground circuit. |
Replace fuel level sensor. |