Fuel Delivery and Air Induction: Service Precautions

PRECAUTION

1. BEFORE WORKING ON THE FUEL SYSTEM, DISCONNECT THE NEGATIVE (-) TERMINAL CABLE FROM THE BATTERY

HINT: Any diagnostic trouble code retained by the computer will be erased when the negative (-) terminal cable is removed from the battery. Therefore, if necessary, read the diagnosis before removing the negative (-) terminal cable from the battery.

2. DO NOT SMOKE OR WORK NEAR AN OPEN FLAME WHEN WORKING ON THE FUEL SYSTEM

3. KEEP GASOLINE AWAY FROM RUBBER OR LEATHER PARTS

4. AIR INDUCTION SYSTEM
a. Separation of the engine oil dipstick, oil filler cap, PCV hose, etc. may cause the engine to run out of turn.
b. Disconnection, looseness or cracks in the parts of the air induction system between the throttle body and cylinder head will allow air suction and cause the engine to run out of turn.

5. FUEL SYSTEM







Check that there are no fuel leaks after doing maintenance anywhere on the fuel system.
1. Connect the TOYOTA hand-held tester to the DLC3.
2. Turn the ignition switch ON and push TOYOTA hand-held tester main switch ON.
3. Select the active test mode on the TOYOTA handheld tester.
4. Please refer to the TOYOTA hand-held tester operator's manual for further details.
5. If you have no TOYOTA hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.
6. Check that there are no leaks from any part of the fuel system.
7. Turn the ignition switch to LOCK.
8. Disconnect the TOYOTA hand-held tester from the DLC3.

WARNING: Adhere to the following procedures any time the fuel system is being worked on in order to reduce the risk of fire and personal injury:

- Keep a dry chemical (Class B) fire extinguisher near the work area.
- Place a "CAUTION FLAMMABLE" sign in the work area.
- Work in a well-ventilated area. Do not smoke, and keep sparks and open flames away.
- Wear eye protection.
- Use caution when working near the catalytic converter to prevent the possibility of burns or fire. (The temperatures within the converter can exceed 537 degrees C (1000 degrees F)).
- Relieve the fuel system pressure prior to disconnecting fuel system components.
- Disconnect the negative battery cable except for tests where battery voltage is required.
- Use a suitable container to store or catch fuel.
- Do not replace fuel pipe with fuel hose.
- Plug all disconnected fuel line fittings and hoses.
- After making any fuel system repairs ALWAYS inspect for fuel leaks.