Fuel Line Coupler: Service and Repair
FUEL SYSTEMa. Observe these precautions when handling nylon tube.
1. Pay attention not to turn the connected part of the nylon tube and the quick connector with force when connecting them.
2. Pay attention not to kink the nylon tube.
3. Do not remove the EPDM protector on the outside of the nylon tube.
4. Must not close the piping with the nylon tube by bending it.
b. Check that there are no fuel leaks after doing maintenance anywhere on the fuel system.
1. Connect a LEXUS hand-held tester or OBDII scan tool to the DLC3.
2. Turn the ignition switch ON and push the LEXUS hand-held tester or OBDII scan tool main switch ON.
NOTE: Do not start the engine.
3. Select the active test mode on the LEXUS hand-held tester or OBDII scan tool.
4. Please refer to the LEXUS hand-held tester or OBDII scan tool operator's manual for further details
5. If you have no LEXUS hand-held tester or OBDII scan tool, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.
6. Pinch the fuel inlet hose
The pressure in the high pressure line will rise to approx. 392 kPa (4 kgf/sq.cm, 57 psi). In this state, check to see that there are no leaks from any part of the fuel system.
NOTE: Always pinch the hose, Avoid bending as may cause the hose to crack.
7. Turn the ignition switch OFF
8. Disconnect the LEXUS hand-held tester or OBDII scan tool from the DLC3.