Fuel System: Inspection

FUEL INJECTOR ASSY
1. Inspect injector resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    
    Fig 1: Identifying Fuel Injector Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Resistance: 13.4 - 14.2 Ω at 20°C (68°F)
2. Inspect injector inspection
  CAUTION: Keep injector clear of sparks during the test.
  1. Purchase a new fuel tube, and take out the fuel tube connector from its tube.
    NOTE: Part No. 23901-0D010
    
    Fig 2: Identifying Fuel Tube Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Connect SST and fuel tube connector to the fuel pipe.
    SST 09268-41047 (90467-13001, 95336-08070)
    
    CAUTION: Perform connecting operations of the fuel tube connector (quick type) after observing the precautions.
    
    Fig 3: Connecting SST And Fuel Tube Connector To Fuel Pipe
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Install an O-ring to the fuel injector.
  4. Connect SST (union and hose) to fuel the injector, and hold the fuel injector to prevent gasoline from splashing out. (See FUEL SYSTEM )
    
    Fig 4: Connecting SST (Union & Hose) To Fuel Injector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    SST 09268-41047 (90467-13001, 95336-08070, 09268-41110, 09268-41300)
  5. Put the fuel injector into a graduated cylinder.
    NOTE: Install a suitable vinyl tube onto the injector to prevent gasoline from splashing out.
  6. Operate the fuel pump.
  7. Connect SST to the connector of fuel injector.
    
    Fig 5: Connecting SST To Connector Of Fuel Injector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    SST 09842-30080
  8. Connect SST to the battery for 15 seconds, and measure the injection volume with a graduated cylinder. Test the each fuel injector 2 or 3 times.
  1. Injection volume:
    1. 1ZZ-FE: 60 - 73 cm ³ (3.7 - 4.5 cu in.) per 15 seconds
    2. 2ZZ-GE: 77 - 94 cm ³ (4.7 - 5.7 cu in.) per 15 seconds
  2. Difference between each injector:
    1. 1ZZ-FE: 13 cm ³ (0.8 cu in.) or less
    2. 2ZZ-GE: 17 cm ³ (1.0 cu in.) or less
3. Inspect leakage
  1. In the condition above, disconnect the test probes of the SST from the battery, and check the fuel leakage from the fuel injector.
    
    Fig 6: Checking Fuel Leakage From Fuel Injector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Fuel drop: 1 drop or less per 12 minutes
FUEL PUMP
1. Inspect fuel pump resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
  1. Resistance: 0.2 - 3.0 Ω at 20°C (68°F)
2. Inspect fuel pump operation
  1. Apply battery voltage to both terminals. Check that the pump operates.
    
    Fig 7: Identifying Fuel Pump Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE:
- These tests must be done quickly (within 10 seconds) to prevent the coil from burning out.
- Keep fuel pump as far away from the battery as possible.
- Always do the switching at the battery side.