Toyota Tundra Service Manual: Inspection

Toyota Tundra Service Manual / Engine, Hybrid System / 1ur-fe Fuel / Fuel Injector / Inspection

INSPECTION

PROCEDURE

1. INSPECT FUEL INJECTOR ASSEMBLY

(a) 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.

(b) Inspect the injection volume.

CAUTION:

This test involves high-pressure fuel and electricity. Take all precautions regarding safe handling of both the fuel and the electricity. Perform this test in a safe area, and avoid any sparks or flames. Do not smoke.

(1) Remove the fuel pipe clamp.

(2) Disconnect the No. 1 fuel pipe sub-assembly (for Quick Type B) (See page ).

(3) Connect SST to the fuel pipe (the vehicle side).

SST: 09268-31014

09268-41500

09268-41700

95336-08070

(4) Install the O-ring to the fuel injector assembly.

(5) Install SST and the tube to the fuel injector assembly.

SST: 09268-31014

09268-41300

09268-41500

09268-41600

09268-41700

(6) Pass SST (tie band) through the loop on the handle of SST (clamp) to secure SST (clamp) to SST (adapter).

SST: 09268-31014

09268-41800

NOTICE:

  • As SST (tie band) does not completely prevent SST (clamp) from becoming loose, do not subject the parts to any impacts while using them.
  • Before using SST (tie band), make sure that there is no deterioration, damage or cracks. If there are any abnormalities, replace SST.

HINT:

When removing SST (tie band), disengage the lock.

(7) Check that SST (clamp) and SST (adapter) cannot be easily separated.

(8) Put the injector into a graduated cylinder.

CAUTION:

Install a strong rubber tube onto the injector to prevent gasoline from splashing.

NOTICE:

  • Make sure that SST (EFI inspection wire I) is securely connected.
  • Always turn the voltage on and off on the battery side, not the fuel pump side.

(9) Operate the fuel pump (turn the ignition switch to ON).

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

SST: 09842-30090

Standard injection volume:

83 to 99 cm3 (5.0 to 6.0 cu in.) per 15 seconds

Difference between each injector:

16 cm3 (1.0 cu in.) or less

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

(c) Check for leakage.

(1) In the condition above, disconnect the tester probes of SST (wire) from the battery and check for fuel leakage from the injector.

Standard fuel drop:

1 drop or less in 12 minutes
    Components

    Installation

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