Lexus IS250 IS220d GSE20 ALE20 4GR-FSE FUEL
FUEL PUMP (for High Pressure) - ON-VEHICLE INSPECTION
| 1. CHECK FUEL PUMP OPERATION |
Check fuel pressure.
Connect the intelligent tester to the DLC3.
Start the engine.
Turn the tester ON.
Enter the following menus: Power train / Engine / Active Test / Control the target fuel pressure.
Check that the fuel pressure fluctuates when the target fuel pressure changes.
- HINT:
- The Control the target fuel pressure operation lowers the target fuel pressure by 12.5% or increase the target fuel pressure by 25%.
- Standard:
- Fuel pressure fluctuates in accordance with tester operation.
If the result is not as specified, replace the fuel pump or fuel pressure sensor.
Check operating sound.
Remove the V-bank cover.
Start the engine.
Using a sound scope, check the operating sound of the pump.
If no sound can be heard, check the fuel pump, wire harness and ECM.
Stop the engine.
Reinstall the V-bank cover.
| 2. INSPECT FUEL PUMP ASSEMBLY |
Measure the resistance between the terminals.
- Standard resistance:
- 1.19 to 1.39 Ω at 20°C (68°F)
If the result is not as specified, replace the fuel pump.
LEXUS IS250, IS220d / GSE20 ALE20