Fuel Delivery and Air Induction: Service Precautions
PRECAUTION1. BEFORE WORKING ON THE FUEL SYSTEM , DISCONNECT THE NEGATIVE (-) TERMINAL CABLE FROM THE BATTERY
HINT: Any diagnostic trouble codes 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 stop turning.
b. Disconnection, looseness or cracks in the air induction system between the throttle body and cylinder head will allow air suction and cause the engine to stop turning.
5. FUEL SYSTEM
a. Check that there are no fuel leaks in the fuel system after performing an inspection.
1. Connect the TOYOTA hand-held tester to the DLC3.
2. Turn the ignition switch ON and push the TOYOTA hand-held tester main switch ON.
3. Select the active test mode on the TOYOTA hand-held tester.
4. Refer to the TOYOTA hand-held tester operator's manual for further details.
5. If you do not have a 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 in the fuel system.
7. Turn the ignition switch to LOCK.
8. Disconnect the TOYOTA hand-held tester from the DLC3.