Injector On-Vehicle Inspection - Lexus 2005 IS300 User Manual

Sound Scope
2005 LEXUS IS300 (RM1140U)
SFI
INJECTOR
ON-VEHICLE INSPECTION
1. REMOVE ENGINE COVER
Remove 4 nuts and engine cover.
2. INSPECT INJECTOR OPERATION
Check operation sound from each injector.
(1)
B01568
(2)
If no sound or an unusual sound is heard, check the wiring con-
nector, injector or injection signal from the ECM.
B01569
3. INSPECT INJECTOR RESISTANCE
Ohmmeter
(a) Disconnect the injector connectors.
(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 connectors.
4. REINSTALL ENGINE COVER
Install the engine cover with the 4 nuts.
B01570
- INJECTOR
With the engine running or cranking, use a sound
scope to check that there is normal operating noise
in proportion to engine speed.
If you have no sound scope, you can check the in-
jector transmission operation with a screwdriver.
Author :
SF-19
SF0N9-10
Date :
1400