No.	Step	Check	Yes	No
	1	CHECK OPERATION OF STARTER MOTOR.	Does starter motor operate when the switch starts?	Go to step 2.	Go to step 3.
	2	CHECK DTC. <Ref. to EN(SOHC)-41, OPERATION, Read Diagnostic Trouble Code.>	Is the trouble code stored in memory? <Ref. to EN(SOHC)-80, LIST, List of Diagnostic Trouble Code (DTC).>	Record DTC. Repair the trouble case. <Ref. to EN(SOHC)-86, Engine Control Module (ECM) I/O Signal.>	Go to step 3.
	3	CHECK INPUT SIGNAL FOR STARTER MOTOR. 1) Turn ignition switch to OFF. 2) Disconnect connector from starter motor. 3) Turn ignition switch to ST. 4) Measure power supply voltage between starter motor connector terminal and engine ground. Connector & terminal (B14) No. 1 (+) - Engine ground (-): NOTE: On AT vehicles, place the selector lever in the "P" or "N" position.	Is the voltage more than 10 V?	Go to step 4.	Go to step 5.
	4	CHECK GROUND CIRCUIT OF STARTER MOTOR. 1) Turn ignition switch to OFF. 2) Disconnect terminal from starter motor. 3) Measure resistance of ground cable between ground cable terminal and engine ground.	Is resistance less than 5 Q?	Check starter motor. <Ref. to SC-5, Starter.>	Repair open cirВ­cuit of ground cable.
	5	CHECK HARNESS BETWEEN ECM AND STARTER MOTOR CIRCUIT. 1) Turn ignition switch to OFF. 2) Measure resistance between starter motor and ECM. Connector & terminal (B14) No. 1 - Engine ground:	Is resistance less than 1 Q?	Repair ground short circuit.	Go to step 6.
	6	CHECK HARNESS BETWEEN ECM AND STARTER MOTOR CIRCUIT. 1) Turn ignition switch to START. 2) Measure resistance of fuse. Connector & terminal (B14) No. 1 - Engine ground:	Is resistance less than 1 Q?	Go to step 7.	Repair ground short circuit.
	7	CHECK HARNESS BETWEEN BATTERY AND IGNITION SWITCH CONNECTOR. 1) Ignition switch to OFF. 2) Disconnect connector from ignition switch. 3) Measure power supply voltage between ignition switch connector and chassis ground. Connector & terminal (B72) No. 1 (+) - Chassis ground (-):	Is the voltage more than 10 V?	Go to step 8.	Repair open cirВ­cuit in harness between ignition switch and batВ­tery.
	8	CHECK HARNESS BETWEEN BATTERY AND IGNITION SWITCH CONNECTOR. 1) Connect connector to ignition switch. 2) Turn ignition switch to START. 3) Measure voltage between ignition switch and chassis ground. Connector & terminal (B72) No. 3 (+) - Chassis ground (-):	Is the voltage more than 10 V?	Go to step 9.	Replace ignition switch.

	No.	Step	Check	Yes	No
	9	CHECK TRANSMISSION TYPE.	Is the vehicle AT?	Go to step 10.	Repair open cir-
					cuit between igni-
					tion switch and
					starter motor cir-
					cuit.
	10	CHECK INHIBITOR SWITCH CIRCUIT.	Is the resistance less than	Repair open cir-	Go to step 11.
		1) Turn ignition switch to OFF.	1 Q?	cuit in harness
		2) Place the selector lever in the "P" or "N"		between starter
		position.		motor and ignition
		3) Separate transmission harness connector.		switch connector.
		4) Measure resistance between transmission
		harness connector receptacle's terminals.
		Connector & terminal
		(T3) No. 11 - No. 12:
	11	CHECK TRANSMISSION HARNESS.	Is the resistance less than	Go to step 12.	Repair open cir-
		1) Disconnect connector from inhibitor switch.	1 Q?		cuit in harness
		2) Measure resistance of harness between			between transmis-
		transmission harness and inhibitor switch con-			sion harness and
		nector.			inhibitor switch
		Connector & terminal			connector.
		(T3) No. 11 - (T7) No. 7:
	12	CHECK POOR CONTACT.	Is there poor contact in	Repair poor con-	Replace inhibitor
		Check poor contact in inhibitor switch connect	inhibitor switch connector?	tact in inhibitor	switch.
		tor.		switch connector.

	No.	Step	Check	Yes	No
	1	CHECK MAIN RELAY.	Is the resistance less than	Go to step 2.	Replace main
		1) Turn the ignition switch to OFF.	10 Q?		relay.
		2) Remove main relay.
		3) Connect battery to main relay terminals No.
		1 and No. 2.
		4) Measure resistance between main relay
		terminals.
		Terminals
		No. 3 - No. 5:
		No. 4 - No. 6:

	No.	Step	Check	Yes	No
	2	CHECK GROUND CIRCUIT OF ECM. 1) Disconnect connector from ECM. 2) Measure resistance of harness between ECM and chassis ground. Connector & terminal (B136) No. 21 - Chassis ground: (B136) No. 22 - Chassis ground: (B134) No. 27 - Chassis ground: (B134) No. 8 - Chassis ground: (B134) No. 7 - Chassis ground: (B134) No. 34 - Chassis ground: (B134) No. 35 - Chassis ground:	Is the resistance less than 5Q?	Go to step 3.	Repair open cirВ­cuit in harness between ECM connector and engine grounding terminal.
	3	CHECK INPUT VOLTAGE OF ECM. Measure voltage between ECM connector and chassis ground. Connector & terminal (B136) No. 9 (+) - Chassis ground (-):	Is the voltage more than 10 V?	Go to step 4.	Repair open or ground short cirВ­cuit of power supВ­ply circuit.
	4	CHECK INPUT VOLTAGE OF ECM. 1) Turn ignition switch to ON. 2) Measure voltage between ECM connector and chassis ground. Connector & terminal (B135) No. 7 (+) - Chassis ground (-):	Is the voltage more than 10 V?	Go to step 5.	Repair open or ground short cirВ­cuit of power supВ­ply circuit.
	5	CHECK HARNESS BETWEEN ECM AND MAIN RELAY CONNECTOR. 1) Turn ignition switch to OFF. 2) Measure resistance between ECM and chassis ground. Connector & terminal (B135) No. 19 - Chassis ground:	Is the resistance more than 1 MQ?	Go to step 6.	Repair ground short circuit in harness between ECM connector and main relay connector, then replace ECM.
	6	CHECK OUTPUT VOLTAGE FROM ECM. 1) Connect connector to ECM. 2) Turn ignition switch to ON. 3) Measure voltage between ECM connector and chassis ground. Connector & terminal (B135) No. 19 (+) - Chassis ground	Is the voltage more than 10 V?	Go to step 7.	Replace ECM.
	7	CHECK INPUT VOLTAGE OF MAIN RELAY. Check voltage between main relay connector and chassis ground. Connector & terminal (B47) No. 2 (+) - Chassis ground (-):	Is the voltage more than 10 V?	Go to step 8.	Repair open cirВ­cuit in harness between ECM connector and main relay conВ­nector.
	8	CHECK GROUND CIRCUIT OF MAIN RELAY. 1) Turn ignition switch to OFF. 2) Measure resistance between main relay connector and chassis ground. Connector & terminal (B47) No. 1 - Chassis ground:	Is the resistance less than 5Q?	Go to step 9.	Repair open cirВ­cuit between main relay and chassis ground.
	9	CHECK INPUT VOLTAGE OF MAIN RELAY. Measure voltage between main relay connecВ­tor and chassis ground. Connector & terminal (B47) No. 5 (+) - Chassis ground (-): (B47) No. 6 (+) - Chassis ground (-):	Is the voltage more than 10 V?	Go to step 10.	Repair open or ground short cirВ­cuit in harness of power supply cirВ­cuit.

	No.	Step	Check	Yes	No
	10	CHECK INPUT VOLTAGE OF ECM.	Is the voltage more than 10	Check ignition	Repair open or
		1) Connect main relay connector.	V?	control system.	ground short cir-
		2) Turn ignition switch to ON.		<Ref. to	cuit in harness
		3) Measure voltage between ECM connector		EN(SOHC)-68,	between ECM
		and chassis ground.		IGNITION CON-	connector and
		Connector & terminal		TROL SYSTEM,	main relay con-
		(B136) No. 1 (+) - Chassis ground (-):		Diagnostics for	nector.
		(B136) No. 2 (+) - Chassis ground (-):		Engine Starting
				Failure.>

	No.	Step	Check	Yes	No
	1	CHECK IGNITION SYSTEM FOR SPARKS.	Does spark occur at each	Check fuel pump	Go to step 2.
		1) Remove plug cord cap from each spark	cylinder?	system. <Ref. to
		plug.		EN(SOHC)-72,
		2) Install new spark plug on plug cord cap.		FUEL PUMP
		CAUTION:		CIRCUIT, Diag-
		Do not remove spark plug from engine.		nostics for Engine
		3) Contact spark plug's thread portion on		Starting Failure.>
		engine.
		4) While opening throttle valve fully, crank
		engine to check that spark occurs at each
		cylinder.
	2	CHECK POWER SUPPLY CIRCUIT FOR	Is the voltage more than 10	Go to step 3.	Repair harness
		IGNITION COIL & IGNITOR ASSEMBLY.	V?		and connector.
		1) Turn ignition switch to OFF.			NOTE:
		2) Disconnect connector from ignition coil &			In this case,
		ignitor assembly.			repair the follow-
		3) Turn ignition switch to ON.			ing:
		4) Measure power supply voltage between			- Open circuit in
		ignition coil & ignitor assembly connector and			harness between
		engine ground.			ignition coil & igni-
		Connector & terminal			tor assembly, and
		(E12) No. 2 (+) - Engine ground (-):			ignition switch
					connector
					- Poor contact in
					coupling connec-
					tors (B22)
	3	CHECK HARNESS OF IGNITION COIL &	Is the resistance between	Go to step 4.	Repair harness
		IGNITOR ASSEMBLY GROUND CIRCUIT.	less than 5 Q?		and connector.
		1) Turn ignition switch to OFF.			NOTE:
		2) Measure resistance between ignition coil &			In this case,
		ignitor assembly connector and engine			repair the follow-
		ground.			ing:
		Connector & terminal			- Open circuit in
		(E12) No. 3 - Engine ground:			harness between
					ignition coil & igni-
					tor assembly con-
					nector and engine
					grounding termi-
					nal
	4	CHECK IGNITION COIL & IGNITOR ASSEM-	Is the resistance between	Go to step 5.	Replace ignition
		BLY.	10 and 15 РЁ?		coil & ignitor
		1) Remove spark plug cords.			assembly. <Ref.
		2) Measure resistance between spark plug			to IG(SOHC)-8,
		cord contact portions to check secondary coil.			Ignition Coil and
		Terminals			Ignitor Assembly.>
		No. 1 - No. 2:
	5	CHECK IGNITION COIL & IGNITOR ASSEM-	Is the resistance between	Go to step 6.	Replace ignition
		BLY.	10 and 15 РЁ?		coil & ignitor
		Measure resistance between spark plug cord			assembly. <Ref.
		contact portions to check secondary coil.			to IG(SOHC)-8,
		Terminals			Ignition Coil and
		No. 3 - No. 4:			Ignitor Assembly.>

	No.	Step	Check	Yes	No
	6	CHECK INPUT SIGNAL FOR IGNITION COIL & IGNITOR ASSEMBLY. 1) Connect connector to ignition coil & ignitor assembly. 2) Check if voltage varies synchronously with engine speed when cranking, while monitoring voltage between ignition coil & ignitor assemВ­bly connector and engine ground. Connector & terminal (E12) No. 1 (+) - Engine ground (-):	Is the voltage more than 10 V?	Go to step 7.	Replace ignition coil & ignitor assembly. <Ref. to IG(SOHC)-8, Ignition Coil and Ignitor Assembly.>
	7	CHECK INPUT SIGNAL FOR IGNITION COIL & IGNITOR ASSEMBLY. Check if voltage varies synchronously with engine speed when cranking, while monitoring voltage between ignition coil & ignitor assemВ­bly connector and engine ground. Connector & terminal (E12) No. 4 (+) - Engine ground (-):	Is the voltage more than 10 V?	Go to step 8.	Replace ignition coil & ignitor assembly. <Ref. to IG(SOHC)-8, Ignition Coil and Ignitor Assembly.>
	8	CHECK HARNESS BETWEEN ECM AND IGNITION COIL & IGNITOR ASSEMBLY CONNECTOR. 1) Turn ignition switch to OFF. 2) Disconnect connector from ECM. 3) Disconnect connector from ignition coil & ignitor assembly. 4) Measure resistance of harness between ECM and ignition coil & ignitor assembly conВ­nector. Connector & terminal (B134) No. 25 - (E12) No. 1:	Is the resistance less than 1 Q?	Go to step 9.	Repair harness and connector. NOTE: In this case, repair the followВ­ing: - Open circuit in harness between ECM and ignition coil & ignitor assembly connecВ­tor - Poor contact in coupling connecВ­tor (B22)
	9	CHECK HARNESS BETWEEN ECM AND IGNITION COIL & IGNITOR ASSEMBLY CONNECTOR. Measure resistance of harness between ECM and ignition coil & ignitor assembly connector. Connector & terminal (B134) No. 26 - (E12) No. 4:	Is the resistance less than 1 Q?	Go to step 10.	Repair harness and connector. NOTE: In this case, repair the followВ­ing: - Open circuit in harness between ECM and ignition coil & ignitor assembly connecВ­tor - Poor contact in coupling connecВ­tor (B22)
	10	CHECK HARNESS BETWEEN ECM AND IGNITION COIL & IGNITOR ASSEMBLY CONNECTOR. Measure resistance of harness between ECM and engine ground. Connector & terminal: (B134) No. 25 - Engine ground:	Is the resistance more than 1 MQ?	Go to step 11.	Repair ground short circuit in harness between ECM and ignition coil & ignitor assembly connecВ­tor.

	No.	Step	Check	Yes	No
	11	CHECK HARNESS BETWEEN ECM AND	Is the resistance more than	Go to step 12.	Repair ground
		IGNITION COIL & IGNITOR ASSEMBLY	1 MQ?		short circuit in
		CONNECTOR.			harness between
		Measure resistance of harness between ECM			ECM and ignition
		and engine ground.			coil & ignitor
		Connector & terminal			assembly connec-
		(B134) No. 26 - Engine ground:			tor.
	12	CHECK POOR CONTACT.	Is there poor contact in	Repair poor con-	Check fuel pump
		Check poor contact in ECM connector.	ECM connector?	tact in ECM con-	circuit. <Ref. to
				nector.	EN(SOHC)-72,
					FUEL PUMP
					CIRCUIT, Diag-
					nostics for Engine
					Starting Failure.>

	No.	Step	Check	Yes	No
	1	CHECK OPERATING SOUND OF FUEL PUMP. Make sure that fuel pump is in operation for two seconds when turning ignition switch to ON. NOTE: Fuel pump operation can also be executed using Subaru Select Monitor (Function mode: FD01). For the procedure, refer to "Compulsory Valve Operation Check Mode". <Ref. to EN(SOHC)-46, Compulsory Valve Operation Check Mode.>	Does fuel pump produce operating sound?	Check fuel injecВ­tor circuit. <Ref. to EN(SOHC)-76, FUEL INJECTOR CIRCUIT, DiagВ­nostics for Engine Starting Failure.>	Go to step 2.
	2	CHECK GROUND CIRCUIT OF FUEL PUMP. 1) Turn ignition switch to OFF. 2) Remove fuel pump access hole lid located on the right rear of trunk compartment floor (Sedan) or luggage compartment floor (Wagon). 3) Disconnect connector from fuel pump. 4) Measure resistance of harness connector between fuel pump and chassis ground. Connector & terminal (R58) No. 4 - Chassis ground:	Is the resistance less than 5Q?	Go to step 3.	Repair harness and connector. NOTE: In this case, repair the followВ­ing: - Open circuit in harness between fuel pump conВ­nector and chasВ­sis grounding terВ­minal - Poor contact in coupling connecВ­tor (R15)
	3	CHECK POWER SUPPLY TO FUEL PUMP. 1) Turn ignition switch to ON. 2) Measure voltage of power supply circuit between fuel pump connector and chassis ground. Connector & terminal (R58) No. 1 (+) - Chassis ground (-):	Is the voltage more than 10 V?	Replace fuel pump. <Ref. to FU(SOHC)-62, Fuel Pump.>	Go to step 4.
	4	CHECK HARNESS BETWEEN FUEL PUMP AND FUEL PUMP RELAY CONNECTOR. 1) Turn ignition switch to OFF. 2) Measure resistance of harness connector between fuel pump and fuel pump relay. Connector & terminal (R58) No. 1 - (B46) No. 4:	Is the resistance less than 1 Q?	Go to step 5.	Repair harness and connector. NOTE: In this case, repair the followВ­ing: - Open circuit in harness between fuel pump conВ­nector and chasВ­sis grounding terВ­minal - Poor contact in coupling connecВ­tors R15 and B97
	5	CHECK HARNESS BETWEEN FUEL PUMP AND FUEL PUMP RELAY CONNECTOR. Measure resistance of harness between fuel pump and fuel pump relay connector. Connector & terminal (R58) No. 1 - Chassis ground:	Is the resistance more than 1 MQ?	Go to step 6.	Repair short cirВ­cuit in harness between fuel pump and fuel pump relay conВ­nector.

	No.	Step	Check	Yes	No
	6	CHECK FUEL PUMP RELAY. 1) Disconnect connectors from fuel pump relay and main relay. 2) Remove fuel pump relay and main relay with bracket. 3) Connect battery to fuel pump relay connecВ­tor terminals No. 1 and No. 3. 4) Measure resistance between connector terminals of fuel pump relay. Terminals No. 2 - No. 4:	Is the resistance less than 10 Q?	Go to step 7.	Replace fuel pump relay. <Ref. to FU(SOHC)-51, Fuel Pump Relay. >
	7	CHECK HARNESS BETWEEN ECM AND FUEL PUMP RELAY CONNECTOR. 1) Disconnect connectors from ECM. 2) Measure resistance of harness between ECM and fuel pump relay connector. Connector & terminal (B134) No. 29 - (B46) No. 3:	Is the resistance less than 1 Q?	Go to step 8.	Repair open cirВ­cuit in harness between ECM and fuel pump relay connector.
	8	CHECK POOR CONTACT. Check poor contact in ECM connector.	Is there poor contact in ECM connector?	Repair poor conВ­tact in ECM conВ­nector.	Check fuel injecВ­tor circuit. <Ref. to EN(SOHC)-76, FUEL INJECTOR CIRCUIT, DiagВ­nostics for Engine Starting Failure.>

	No.	Step	Check	Yes	No
	1	CHECK OPERATION OF EACH FUEL	Is the fuel injector emits	Check fuel pres-	Go to step 2.
		INJECTOR.	"operating" sound?	sure. <Ref. to
		While cranking the engine, check that each		ME(SOHC)-28,
		fuel injector emits "operating" sound. Use a		INSPECTION,
		sound scope or attach a screwdriver to injec-		Fuel Pressure.>
		tor for this check.

	No.	Step	Check	Yes	No
	2	CHECK POWER SUPPLY TO EACH FUEL	Is the voltage more than 10	Go to step 3.	Repair harness
		INJECTOR.	V?		and connector.
		1) Turn ignition switch to OFF.			NOTE:
		2) Disconnect connector from #1 cylinder fuel			In this case,
		injector.			repair the follow-
		3) Turn ignition switch to ON.			ing:
		4) Measure power supply voltage between the			- Open circuit in
		fuel injector terminal and engine ground.			harness between
		Connector & terminal			main relay and
		#1 (E5) No. 2 (+) - Engine ground (-):			fuel injector con-
		#2 (E16) No. 2 (+) - Engine ground			nector
					- Poor contact in
		#3 (E6) No. 2 (+) - Engine ground (-):			main relay con-
		#4 (E17) No. 2 (+) - Engine ground			nector
					- Poor contact in
					coupling connec-
					tor (B22)
					- Poor contact in
					fuel injector con-
					nector
	3	CHECK HARNESS BETWEEN ECM AND	Is the resistance between 5	Go to step 4.	Repair harness
		FUEL INJECTOR CONNECTOR.	and 20 Q?		and connector.
		1) Disconnect connector from ECM.			NOTE:
		2) Measure resistance of harness between			In this case,
		ECM and fuel injector connector.			repair the follow-
		Connector & terminal			ing:
		(B134) No. 4 - (B136) No. 2:			- Open circuit in
					harness between
					ECM and fuel
					injector connector
					- Poor contact in
					coupling connec-
					tor (B22)
	4	CHECK HARNESS BETWEEN ECM AND	Is the resistance less than	Repair ground	Go to step 5.
		FUEL INJECTOR CONNECTOR.	1 Q?	short circuit in
		Measure resistance of harness between ECM		harness between
		and fuel injector connector.		ECM and fuel
		Connector & terminal		injector connector.
		(B134) No. 4 - Chassis ground:
	5	CHECK HARNESS BETWEEN ECM AND	Is the resistance between 5	Go to step 6.	Repair harness
		FUEL INJECTOR CONNECTOR.	and 20 Q?		and connector.
		Measure resistance of harness between ECM			NOTE:
		and fuel injector connector.			In this case,
		Connector & terminal			repair the follow-
		(B134) No. 13 - (B136) No. 2:			ing:
					- Open circuit in
					harness between
					ECM and fuel
					injector connector
					- Poor contact in
					coupling connec-
					tor (B22)
	6	CHECK HARNESS BETWEEN ECM AND	Is the resistance less than	Repair ground	Go to step 7.
		FUEL INJECTOR CONNECTOR.	1 Q?	short circuit in
		Measure resistance of harness between ECM		harness between
		and fuel injector connector.		ECM and fuel
		Connector & terminal		injector connector.
		(B134) No. 13 - Chassis ground:

	No.	Step	Check	Yes	No
	7	CHECK HARNESS BETWEEN ECM AND	Is the resistance between 5	Go to step 8.	Repair harness
		FUEL INJECTOR CONNECTOR.	and 20 Q?		and connector.
		Measure resistance of harness between ECM			NOTE:
		and fuel injector connector.			In this case,
		Connector & terminal			repair the follow-
		(B134) No. 14 - (B136) No. 2:			ing:
					- Open circuit in
					harness between
					ECM and fuel
					injector connector
					- Poor contact in
					coupling connec-
					tor (B22)
	8	CHECK HARNESS BETWEEN ECM AND	Is the resistance less than	Repair ground	Go to step 9.
		FUEL INJECTOR CONNECTOR.	1 Q?	short circuit in
		Measure resistance of harness between ECM		harness between
		and fuel injector connector.		ECM and fuel
		Connector & terminal		injector connector.
		(B134) No. 14 - Chassis ground:
	9	CHECK HARNESS BETWEEN ECM AND	Is the resistance between 5	Go to step 10.	Repair harness
		FUEL INJECTOR CONNECTOR.	and 20 Q?		and connector.
		Measure resistance of harness between ECM			NOTE:
		and fuel injector connector.			In this case,
		Connector & terminal			repair the follow-
		(B134) No. 15 - (B136) No. 2:			ing:
					- Open circuit in
					harness between
					ECM and fuel
					injector connector
					- Poor contact in
					coupling connec-
					tor (B22)
	10	CHECK HARNESS BETWEEN ECM AND	Is the resistance less than	Repair ground	Go to step 11.
		FUEL INJECTOR CONNECTOR.	1 Q?	short circuit in
		Measure resistance of harness between ECM		harness between
		and fuel injector connector.		ECM and fuel
		Connector & terminal		injector connector.
		(B134) No. 15 - Chassis ground:
	11	CHECK EACH FUEL INJECTOR.	Is the resistance between 5	Go to step 12.	Replace faulty
		1) Turn ignition switch to OFF.	and 20 Q?		fuel injector.
		2) Measure resistance between each fuel
		injector terminals.
		Terminals
		No. 1 - No. 2:
	12	CHECK POOR CONTACT.	Is there poor contact in	Repair poor con-	Inspection using
		Check poor contact in ECM connector.	ECM connector?	tact in ECM con-	"General Diagnos-
				nector.	tic Table". <Ref. to
					EN(SOHC)-294,
					INSPECTION,
					Genera Diagnos-
					tic Table.>