Fuel Injector: Testing and Inspection
2AZ-FE FUEL: FUEL INJECTOR: INSPECTION
1. INSPECT FUEL INJECTOR ASSEMBLY
(a) Measure the resistance between the injector terminals.
Standard Resistance:
If the result is not as specified, replace the injector.
(b) Inspect the injector injection.
CAUTION:
Keep the injector away from sparks during the test.
(1) Connect SST (fuel tube connector) to SST (hose) with SST (hose band), and then connect them to the fuel pipe (vehicle side).
Text in Illustration
SST : 09268-31014
09268-41500
09268-41700
95336-08070
(2) Install the O-ring to the fuel injector.
(3) Connect SST (adapter and hose) to the injector, and hold the injector and union with SST (clamp).
Text in Illustration
SST : 09268-31014
09268-41110
09268-41300
09268-41700
95336-08070
(4) Tie the clamp and adapter together with a tie band as shown in the illustration.
Text in Illustration
SST : 09268-31014
09268-41110
09268-41300
09268-41800
(5) Put the injector into the graduated cylinder.
CAUTION:
Install a suitable vinyl tube onto the injector that will contain gasoline spray.
(6) Operate the fuel pump.
(7) 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.
Text in Illustration
SST : 09842-30080
NOTICE:
Always switch the voltage on and off at the battery side, not the injector side.
Injection Volume:
Difference between each injector:
16 cc (1.0 cu.in.)
If the result is not as specified, replace the fuel injector assembly.
(c) Inspect for fuel leaks.
(1) Disconnect the SST (wire) tester probes from the battery and check the fuel leakage from the injector.
Standard fuel drop:
1 drop or less per 12 minutes
If fuel drop is not as specified, replace the fuel injector assembly.
(2) Turn the ignition switch off.
(3) Disconnect the cable from the negative (-) battery terminal.
(4) Remove SST.
(5) Disconnect the Techstream from the DLC3.
(6) Reconnect the fuel inlet hose (rear fuel pipe) to the fuel main tube.