Toyota Celica 2005 Repair Manual page 1539

SF−18
2005 CELICA (RM1131U)
Sound Scope
B07712
B07713
SFI − INJECTOR
INJECTOR
ON−VEHICLE INSPECTION
1. REMOVE NO. 2 CYLINDER HEAD COVER
2. CHECK OPERATION SOUND FROM EACH INJECTOR
(a) Connect the PCV hose to cylinder head cover.
(b) With the engine running or cranking, use a sound scope
to check that there is normal operating noise in proportion
to engine speed.
(c) If you have no sound scope, you can check the injector
transmission operation with your finger.
If no sound or unusual sound is heard, check the wiring connec-
tor, injector signal from the ECM.
(d) Disconnect the PCV hose from cylinder head cover.
3. INSPECT INJECTOR RESISTANCE
(a) Disconnect the injector connector.
(b) Using an ohmmeter, measure the resistance between the
terminals.
Resistance: 13.4 − 14.2 Ω at 20°C (68°F)
If the resistance is not as specified, replace the injector.
(c) Reconnect the injector connector.
4. INSTALL WIRE HARNESS PROTECTOR COVER
(a) Install the wire harness protector cover with bolt and 2
nuts.
(b) Connect the PCV hose to cylinder head cover.
1538
SF15O−10