Component Tests and General Diagnostics

INJECTORS INSPECTION





1. INSPECT INJECTOR RESISTANCE
Using an ohmmeter, measure the resistance between the terminals.

Resistance: At 20°C (68°F): Approx. 13.8 ohm

If the resistance is not as specified, replace the injector.
2. INSPECT INJECTOR INJECTION

CAUTION: Keep injector clear of sparks during the test.

(a) Disconnect the fuel inlet pipe from the fuel tube.





(b) Connect SST (attachment and hose) to the fuel tube. SST 09268-41046 (09268-52011)
(c) Connect the fuel return hose. SST (union) and SST (hose) to the fuel pressure regulator. SST 09268-41046 (09268-41091)
(d) Install the O-ring to the injector.





(e) Connect SST (union and hose) to the injector, and hold the injector and union with SST (clamp). SST 09268-41046
(f) Put the injector into the graduated cylinder.

HINT: Install a suitable vinyl tube onto the injector to prevent gasoline from splashing out.





(g) Connect the TOYOTA hand-held tester to the DLC3.
(h) Turn the ignition switch ON and push the TOYOTA hand-held tester main switch ON.

NOTICE: Do not start the engine.

(i) Select the active test mode on the TOYOTA hand-held tester.
(j) Please refer to the TOYOTA hand - held tester operator's manual for further details.
(k) If you have no TOYOTA hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.





(I) Connect SST (wire) to the injector and battery for 15 seconds, and measure the injection volume with a graduated cylinder. Test each injector 2 or 3 times. SST 09842-30070

Volume: 55 - 70 cu.cm (3.3 - 4.3 Cu in.) per 15 sec.

Difference between each injector:
6 cu.cm (0.4 cu in.) or less

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





3. INSPECT LEAKAGE
(a) In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leakage from the injector. SST 09842-30070

Fuel drop: 1 drop or less per minute

(b) Turn the ignition switch to LOCK.
(c) Disconnect the negative (-) terminal cable from the battery.
(d) Remove SST. SST 09268-41046
(e) Disconnect the TOYOTA hand-held tester from the DLC3.