Lexus IS250 IS220d GSE20 ALE20 2AD-FHV FUEL
FUEL SYSTEM - ON-VEHICLE INSPECTION
| 1. FUEL PRESSURE |
READ DATA LIST
Warm up the engine.
Turn the engine switch OFF.
Connect the intelligent tester to the DLC3.
Turn the engine switch ON (IG).
Turn the intelligent tester ON.
Enter the following menus: Powertrain / ENGINE / Data List.
Read the Data List.
| Intelligent Tester Display | Measurement Item/Range (Display) | Normal Conditions |
| Fuel Press | Fuel pressure/ Min.: 0 MPa, Max.: 655.350 MPa | 37 to 43 MPa: Idling |
| Target Common Rail pressure | Target common rail pressure/ Min.: 0 kPa, Max.: 655.350 kPa | 20 to 180 MPa |
| 2. INSPECT FUEL TEMPERATURE SENSOR |
Remove the No. 1 engine cover.
Remove the bolt and the hose clamp.
Disconnect the fuel temperature sensor connector.
Resistance inspection
Using an ohmmeter, measure the resistance between the terminals.
- Standard resistance:
Terminals Condition Resistance 1 - 2 20°C (68°F) 2.32 to 2.59 Ω 1 - 2 80°C (176°F) 0.310 to 0.326 Ω
If the result is not as specified, replace the supply pump assembly.
Connect the fuel temperature sensor connector.
Install the hose clamp with the bolt.
Install the No. 1 engine cover.
| 3. CHECK FOR FUEL LEAKS |
PERFORM ACTIVE TEST
Connect the intelligent tester to the DLC3.
Turn the engine switch ON (IG).
Turn the intelligent tester ON.
Enter the following menus: Powertrain / ENGINE / Active Test.
Perform the Active Test.
| Intelligent Tester Display | Test Details | Control Range | Diagnostic Notes |
| Test the Fuel Leak | Pressurize common rail internal fuel pressure, and check for fuel leaks | Stop/Start | Fuel pressure inside common rail pressurized to specified value and engine speed increased to 2,000 rpm when "Start" is selected Above conditions to be maintained while "Start" is selected |