Fuel Injector: Inspection: Inspection

INSPECT FUEL INJECTOR ASSEMBLY

Check the resistance.

Fig 1: View Of Fuel Injector Assembly Inspection Procedure

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an ohmmeter, measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
1 - 2	20°C (68°F)	11.6 to 12.4 Ω

If the result is not as specified, replace the injector assembly.

Check the operation.

WARNING:

Perform the inspection in a well-ventilated area.

Do not perform the inspection near a naked flame.

Connect SST (fuel tube connector) to SST (hose), then connect them to the fuel pipe (vehicle side).

Fig 2: Identifying Fuel Tube Connector Assembly Procedure With SST
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- SST: 09268-31012
  - 90467-13001
  - 95336-08070
  - 09268-41500
Install the O-ring onto the fuel injector assembly.
Connect SST (adapter and hose) to the injector assembly, and hold the injector assembly and union with SST (clamp).

Fig 3: Identifying Injector Assembly Components
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- SST: 09268-31012
  - 90467-13001
  - 95336-08070
  - 09268-41400
  - 09268-41110
Set the injector assembly in a graduated cylinder.
WARNING:
Install a suitable vinyl tube onto the injector assembly to prevent gasoline from spraying.
Operate the fuel pump.

Connect SST (wire) to the injector assembly and the battery for 15 seconds, and measure the injection volume with the graduated cylinder. Test each injector 2 or 3 times.

Fig 4: View Of SST (Wire) Connected To Injector Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SST: 09842-30080

Injection Volume

Tester Connection	Condition	Specified Condition
Positive terminal - Ground terminal	Per 15 seconds	60 to 73 cc (3.7 to 4.5 cu in.)

Difference between each injector

13 cc (0.8 cu in.) or less

NOTE:

Always do the switching at the battery side.

If the injection volume is not as specified, replace the injector assembly.

Check for leaks.

Fig 5: Identifying Fuel Leakage From Injector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leaks from the injector.
  Fuel drop
  
  1 drop or less every 12 minutes