Fuel Injector Operation Inspection

STEP	INSPECTION	RESULTS	ACTION
1	While cranking the engine, inspect for fuel injector operation sound at each cylinder using a soundscope. Is the operation sound heard?	Yes	Fuel injector operation is normal.
1		No	All cylinders not heard: Go to the next step. Some cylinders not heard: Go to Step 3.
2	Perform the main relay operation inspection. (See MAIN RELAY OPERATION INSPECTION .) Is the main relay operation normal?	Yes	Inspect the following: Fuel injector power system related wiring harness and connectors PCM connectors Fuel injector ground and related wiring harness and connectors Repair or replace the malfunctioning part according to the inspection results.
2		No	Repair or replace the malfunctioning part according to the inspection results.
3	Switch fuel injector connector of not operating fuel injector with operating fuel injector. Is the operation sound heard?	Yes	Go to the next step.
3		No	Replace the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION .)
4	Are wiring harness and connectors of not operation fuel injector normal? (Open or short)	Yes	Inspect the PCM terminal voltage of fuel injector signal. Repair or replace the malfunctioning part according to the inspection results.
4		No	Repair or replace the malfunctioning part according to the inspection results.