SFI SYSTEM TERMINALS OF ECM

CHECK ECM

1. Measure the voltage of the ECM connectors.

   Tech Tips

   The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals, displayed in the "Specified Condition" column. The illustration above can be used as a reference to identify the ECM terminal locations.

   for Automatic Transmission

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   G55-24 (BATT) - C36-12 (E1)	L - BR	Battery (for measuring battery voltage and for ECM memory)	Always	11 to 14 V
   C36-6 (+BM) - C36-12 (E1)	GR - BR	Power source of throttle actuator	Always	11 to 14 V
   G55-21 (IGSW) - C36-12 (E1)	W - BR	Engine switch	Engine switch on (IG)	11 to 14 V
   G55-23 (+B) - C36-12 (E1)	W - BR	Power source of ECM	Engine switch on (IG)	11 to 14 V
   G55-22 (+B2) - C36-12 (E1)	W - BR	Power source of ECM	Engine switch on (IG)	11 to 14 V
   C34-31 (OC1+) - C34-32 (OC1-)	G-Y - L-B	Camshaft timing oil control valve assembly (for Intake Side of Bank 1)	Engine switch on (IG)	Pulse generation (see waveform 1)
   C34-33 (OC2+) - C34-34 (OC2-)	L-W - L-R	Camshaft timing oil control valve assembly (for Intake Side of Bank 2)	Engine switch on (IG)	Pulse generation (see waveform 1)
   C34-35 (OE1+) - C34-36 (OE1-)	G-B - B-R	Camshaft timing oil control valve assembly (for Exhaust Side of Bank 1)	Engine switch on (IG)	Pulse generation (see waveform 1)
   C34-30 (OE2+) - C34-24 (OE2-)	W-G - L	Camshaft timing oil control valve assembly (for Exhaust Side of Bank 2)	Engine switch on (IG)	Pulse generation (see waveform 1)
   G56-36 (MREL) - C36-12 (E1)	V - BR	EFI MAIN NO. 1 relay	Engine switch on (IG)	11 to 14 V
   C34-14 (VG) - C35-18 (E2G)	W-R - B-W	Mass air flow meter	Idling, shift lever in P or N, A/C switch off	0.5 to 3.0 V
   C35-17 (THA) - C36-4 (ETHW)	Y-B - W-R	Intake air temperature sensor	Idling, intake air temperature 20°C (68°F)	0.5 to 3.4 V
   C36-5 (THW) - C36-4 (ETHW)	R-L - W-R	Engine coolant temperature sensor	Idling, engine coolant temperature 80°C (176°F)	0.2 to 1.0 V
   C36-2 (VCTA) - C36-3 (ETA)	L - W	Power source for throttle position sensor (fixed voltage)	Engine switch on (IG)	4.5 to 5.5 V
   C36-1 (VTA1) - C36-3 (ETA)	LG - W	Throttle position sensor (for engine control)	Engine switch on (IG), throttle valve fully closed	0.5 to 1.1 V
   			Engine switch on (IG), throttle valve fully open	3.3 to 4.9 V
   C36-9 (VTA2) - C36-3 (ETA)	G-W - W	Throttle position sensor (for sensor malfunction detection)	Engine switch on (IG), throttle valve fully closed	2.1 to 3.1 V
   			Engine switch on (IG), throttle valve fully open	4.6 to 5.0 V
   G55-2 (VPA) - G55-1 (EPA)	L - P	Accelerator pedal position sensor (for engine control)	Engine switch on (IG), accelerator pedal released	0.5 to 1.1 V
   			Engine switch on (IG), accelerator pedal fully depressed	2.6 to 4.5 V
   G56-5 (VPA2) - G56-4 (EPA2)	GR - W	Accelerator pedal position sensor (for sensor malfunction detection)	Engine switch on (IG), accelerator pedal released	1.2 to 2.0 V
   			Engine switch on (IG), accelerator pedal fully depressed	3.4 to 4.75 V
   G56-6 (VCPA) - G55-1 (EPA)	LG - P	Power source of accelerator pedal position sensor (for VPA)	Engine switch on (IG)	4.5 to 5.5 V
   G56-3 (VCP2) - G56-4 (EPA2)	R - W	Power source of accelerator pedal position sensor (for VPA2)	Engine switch on (IG)	4.5 to 5.5 V
   C37-17 (HA1A) - C37-16 (E04) C37-12 (HA2A) - C37-11 (E05)	R-L - W-B B-W - W-B	Air fuel ratio sensor heater	Idling	Below 3.0 V
   			Engine switch on (IG)	11 to 14 V
   C35-7 (A1A+) - C36-12 (E1)	P -BR	Air fuel ratio sensor	Engine switch on (IG)	3.3 V*
   C35-8 (A1A-) - C36-12 (E1)	L - BR	Air fuel ratio sensor	Engine switch on (IG)	3.0 V*
   C35-1 (A2A+) - C36-12 (E1)	Y - BR	Air fuel ratio sensor	Engine switch on (IG)	3.3 V*
   C35-2 (A2A-) - C36-12 (E1)	L - BR	Air fuel ratio sensor	Engine switch on (IG)	3.0 V*
   C37-18 (HT1B) - C36-23 (E01) C37-13 (HT2B) - C36-23 (E01)	L-R - W-B L - W-B	Heated oxygen sensor heater	Idling	Below 3.0 V
   			Engine switch on (IG)	11 to 14 V
   C35-9 (OX1B) - C35-10 (EX1B) C35-3 (OX2B) - C35-4 (EX2B)	G - R V - P	Heated oxygen sensor	Engine speed maintained at 2500 rpm for 2 minutes after warming up sensor	Pulse generation (see waveform 2)
   C37-6 (#10) - C36-23 (E01) C37-1 (#20) - C36-23 (E01) C37-7 (#30) - C36-23 (E01) C37-2 (#40) - C36-23 (E01) C37-8 (#50) - C36-23 (E01) C37-3 (#60) - C36-23 (E01)	L - W-B B - W-B R - W-B G - W-B Y - W-B R-L - W-B	Fuel injector assembly	Engine switch on (IG)	11 to 14 V
   			Idling	Pulse generation (see waveform 3)
   C35-11 (KNK1) - C35-12 (EKNK) C35-5 (KNK2) - C35-6 (EKN2)	B - W G - R	Knock sensor	Engine speed maintained at 4000 rpm after warming up engine	Pulse generation (see waveform 4)
   C34-12 (VCV1) - C36-12 (E1)	P-L - BR	Power source for sensor (specific voltage)	Engine switch on (IG)	4.5 to 5.5 V
   C34-6 (VCV2) - C36-12 (E1)	LG-B - BR	Power source for sensor (specific voltage)	Engine switch on (IG)	4.5 to 5.5 V
   C34-10 (VV1+) - C34-11 (VV1-)	R - G	VVT sensor (for Intake Side of Bank 1)	Idling	Pulse generation (see waveform 5)
   C34-4 (VV2+) - C34-5 (VV2-)	G - G-R	VVT Sensor (for Intake Side of Bank 2)	Idling	Pulse generation (see waveform 5)
   C34-9 (EV1+) - C34-11 (VV1-)	W-R - G	VVT Sensor (for Exhaust Side of Bank 1)	Idling	Pulse generation (see waveform 6)
   C34-3 (EV2+) - C34-5 (VV2-)	L - G-R	VVT Sensor (for Exhaust Side of Bank 2)	Idling	Pulse generation (see waveform 6)
   C34-16 (NE+) - C34-17 (NE-)	B - W	Crankshaft position sensor	Idling	Pulse generation (see waveform 5)
   C36-27 (IGT1) - C36-12 (E1) C36-28 (IGT2) - C36-12 (E1) C35-25 (IGT3) - C36-12 (E1) C35-26 (IGT4) - C36-12 (E1) C35-27 (IGT5) - C36-12 (E1) C35-28 (IGT6) - C36-12 (E1)	R-Y - BR R-L - BR G-B - BR G-W - BR GR - BR L - BR	Ignition coil assembly (ignition signal)	Idling	Pulse generation (see waveform 7)
   C35-23 (IGF1) - C36-12 (E1)	G-R - BR	Ignition coil assembly (ignition confirmation signal)	Engine switch on (IG)	4.5 to 5.5 V
   			Idling	Pulse generation (see waveform 7)
   C37-10 (PRG) - C36-12 (E1)	P - BR	Purge VSV	Engine switch on (IG)	11 to 14 V
   			Idling	Pulse generation (see waveform 8)
   G56-12 (SPD) - C36-12 (E1)	R - BR	Vehicle speed signal from combination meter assembly	Driving at 20 km/h (12 mph)	Pulse generation (see waveform 9)
   G56-28 (STA) - C36-12 (E1)	W - BR	Starter signal	Cranking	5.5 V or more
   C34-23 (NSW) - C36-12 (E1)	B - BR	Starter relay control	Engine switch on (IG)	Below 1.5 V
   			Cranking	6.0 V or more
   G56-35 (STP) - C36-12 (E1)	V - BR	Stop light switch	Brake pedal depressed	7.5 to 14 V
   			Brake pedal released	Below 1.5 V
   G56-34 (ST1-) - C36-12 (E1)	B - BR	Stop light switch (opposite to voltage at STP terminal)	Engine switch on (IG), Brake pedal depressed	Below 1.5 V
   			Engine switch on (IG), Brake pedal released	7.5 to 14 V
   C37-19 (M+) - C36-29 (ME01)	P - W-B	Throttle actuator	Idling with warm engine	Pulse generation (see waveform 10)
   C37-20 (M-) - C36-29 (ME01)	L - W-B	Throttle actuator	Idling with warm engine	Pulse generation (see waveform 11)
   G55-5 (FC) - C36-12 (E1)	G - BR	Fuel pump control	Idling	Below 1.5 V
   G55-4 (FPC) - C36-12 (E1)	G - BR	Fuel pump control	Engine switch on (IG)	Below 1.5 V
   G55-14 (DI) - C36-12 (E1)	GR - BR	Fuel pump control	Engine switch on (IG)	0 to 3.0 V
   C36-17 (PSP) - C36-12 (E1)	V - BR	Power steering oil pressure sensor	Engine switch on (IG)	0.3 to 4.7 V
   C35-13 (VCAP) - C36-12 (E1)	LG-B - BR	Power source for sensor (specific voltage)	Engine switch on (IG)	4.5 to 5.5 V
   C35-15 (AIP) - C35-14 (EAIP)	V - W-R	Secondary air injection system pressure signal	Engine switch on (IG)	3.0 to 3.6 V
   C35-16 (AIP2) - C35-14 (EAIP)	B - W-R	Secondary air injection system pressure signal	Engine switch on (IG)	3.0 to 3.6 V
   C34-19 (AIDI) - C36-12 (E1)	G - BR	Diagnostic information signal for secondary air injection system	Air injection system operates	Pulse generation (see waveform 12)
   C36-20 (AIRV) - C36-12 (E1)	P - BR	Air switching valve for secondary air injection system	Engine switch on (IG)	11 to 14 V
   C36-18 (AIRP) - C36-12 (E1)	GR - BR	Air pump control for secondary air injection system	Engine switch on (IG)	11 to 14 V
   G56-24 (AIR1) - C36-12 (E1)	L - BR	Air switching valve for secondary air injection system	Engine switch on (IG)	11 to 14 V
   G56-30 (HAI1) - C36-12 (E1)	W - BR	Air pump heater for secondary air injection system	AI heater operating	11 to 14 V
   G55-6 (TC) - C36-12 (E1)	V - BR	Terminal TC of DLC3	Engine switch on (IG)	11 to 14 V
   G56-17 (TACH) - C36-12 (E1)	P - BR	Engine speed	Idling	Pulse generation (see waveform 13)
   C34-29 (ALT) - C36-12 (E1)	L - BR	Generator	Engine switch on (IG)	11 to 14 V
   G56-31 (CANH) - C36-12 (E1)	LG - BR	CAN communication line	Engine switch on (IG)	Pulse generation (see waveform 14)
   G56-25 (CANL) - C36-12 (E1)	W - BR	CAN communication line	Engine switch on (IG)	Pulse generation (see waveform 15)
   G56-13 (NEO) - C36-12 (E1)	P - BR	Engine speed signal sent to certification ECU (smart key ECU assembly)	Idling with warm engine	Pulse generation (see waveform 16)

   for Manual Transmission

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   G55-24 (BATT) - C36-12 (E1)	L - BR	Battery (for measuring battery voltage and for ECM memory)	Always	11 to 14 V
   C36-23 (+BM) - C36-12 (E1)	GR - BR	Power source of throttle actuator	Always	11 to 14 V
   G56-21 (IGSW) - C36-12 (E1)	W - BR	Engine switch	Engine switch on (IG)	11 to 14 V
   G55-22 (+B) - C36-12 (E1)	W - BR	Power source of ECM	Engine switch on (IG)	11 to 14 V
   G55-23 (+B2) - C36-12 (E1)	W - BR	Power source of ECM	Engine switch on (IG)	11 to 14 V
   C35-19 (OC1+) - C35-20 (OC1-)	G-Y - L-B	Camshaft timing oil control valve assembly (for Intake Side of Bank 1)	Engine switch on (IG)	Pulse generation (see waveform 1)
   C34-19 (OC2+) - C34-20 (OC2-)	L-W - L-R	Camshaft timing oil control valve assembly (for Intake Side of Bank 2)	Engine switch on (IG)	Pulse generation (see waveform 1)
   C35-21 (OE1+) - C35-22 (OE1-)	G-B - B-R	Camshaft timing oil control valve assembly (for Exhaust Side of Bank 1)	Engine switch on (IG)	Pulse generation (see waveform 1)
   C34-21 (OE2+) - C34-22 (OE2-)	W-G - L	Camshaft timing oil control valve assembly (for Exhaust Side of Bank 2)	Engine switch on (IG)	Pulse generation (see waveform 1)
   G55-9 (MREL) - C36-12 (E1)	V - BR	EFI MAIN NO. 1 relay	Engine switch on (IG)	11 to 14 V
   C35-14 (VG) - C35-13 (E2G)	W-R - B-W	Mass air flow meter	Idling, shift lever in P or N, A/C switch off	0.5 to 3.0 V
   C35-15 (THA) - C35-7 (ETHA)	Y-B - W-R	Intake air temperature sensor	Idling, intake air temperature 20°C (68°F)	0.5 to 3.4 V
   C36-17 (THW) - C35-8 (ETHW)	R-L - W-R	Engine coolant temperature sensor	Idling, engine coolant temperature 80°C (176°F)	0.2 to 1.0 V
   C36-13 (VCTA) - C36-14 (ETA)	L - W	Power source for throttle position sensor (fixed voltage)	Engine switch on (IG)	4.5 to 5.5 V
   C36-15 (VTA1) - C36-14 (ETA)	LG - W	Throttle position sensor (for engine control)	Engine switch on (IG), throttle valve fully closed	0.5 to 1.1 V
   			Engine switch on (IG), throttle valve fully open	3.3 to 4.9 V
   C36-16 (VTA2) - C36-14 (ETA)	G-W - W	Throttle position sensor (for sensor malfunction detection)	Engine switch on (IG), throttle valve fully closed	2.1 to 3.1 V
   			Engine switch on (IG), throttle valve fully open	4.6 to 5.0 V
   G56-6 (VPA) - G56-3 (EPA)	L - P	Accelerator pedal position sensor (for engine control)	Engine switch on (IG), accelerator pedal released	0.5 to 1.1 V
   			Engine switch on (IG), accelerator pedal fully depressed	2.6 to 4.5 V
   G56-5 (VPA2) - G56-1 (EPA2)	GR - W	Accelerator pedal position sensor (for sensor malfunction detection)	Engine switch on (IG), accelerator pedal released	1.2 to 2.0 V
   			Engine switch on (IG), accelerator pedal fully depressed	3.4 to 4.75 V
   G56-4 (VCPA) - G56-3 (EPA)	LG - P	Power source of accelerator pedal position sensor (for VPA)	Engine switch on (IG)	4.5 to 5.5 V
   G56-2 (VCP2) - G56-1 (EPA2)	R - W	Power source of accelerator pedal position sensor (for VPA2)	Engine switch on (IG)	4.5 to 5.5 V
   C37-17 (HA1A) - C37-16 (E04) C37-19 (HA2A) - C37-16 (E04)	R-L - W-B B-W - W-B	Air fuel ratio sensor heater	Idling	Below 3.0 V
   			Engine switch on (IG)	11 to 14 V
   C36-1 (A1A+) - C36-12 (E1)	P -BR	Air fuel ratio sensor	Engine switch on (IG)	3.3 V*
   C36-2 (A1A-) - C36-12 (E1)	L - BR	Air fuel ratio sensor	Engine switch on (IG)	3.0 V*
   C36-7 (A2A+) - C36-12 (E1)	Y - BR	Air fuel ratio sensor	Engine switch on (IG)	3.3 V*
   C36-8 (A2A-) - C36-12 (E1)	L - BR	Air fuel ratio sensor	Engine switch on (IG)	3.0 V*
   C37-12 (HT1B) - C37-11 (E03) C37-13 (HT2B) - C37-11 (E03)	L-R - W-B L - W-B	Heated oxygen sensor heater	Idling	Below 3.0 V
   			Engine switch on (IG)	11 to 14 V
   C34-2 (OX1B) - C34-1 (EX1B) C34-4 (OX2B) - C34-3 (EX2B)	B - W B - GR	Heated oxygen sensor	Engine speed maintained at 2500 rpm for 2 minutes after warming up sensor	Pulse generation (see waveform 2)
   C37-6 (#10) - C37-14 (E01) C37-1 (#20) - C37-14 (E01) C37-7 (#30) - C37-14 (E01) C37-2 (#40) - C37-14 (E01) C37-8 (#50) - C37-14 (E01) C37-3 (#60) - C37-14 (E01)	L - W-B B - W-B R - W-B G - W-B Y - W-B R-L - W-B	Fuel injector assembly	Engine switch on (IG)	11 to 14 V
   			Idling	Pulse generation (see waveform 3)
   C35-11 (KNK1) - C35-12 (EKNK) C35-5 (KNK2) - C35-6 (EKN2)	B - W G - R	Knock sensor	Engine speed maintained at 4000 rpm after warming up engine	Pulse generation (see waveform 4)
   C34-15 (VCV1) - C36-12 (E1)	P-L - BR	Power source for sensor (specific voltage)	Engine switch on (IG)	4.5 to 5.5 V
   C34-16 (VCV2) - C36-12 (E1)	LG-B - BR	Power source for sensor (specific voltage)	Engine switch on (IG)	4.5 to 5.5 V
   C34-9 (VV1+) - C34-10 (VV1-)	R - G	VVT sensor (for Intake Side of Bank 1)	Idling	Pulse generation (see waveform 5)
   C34-12 (VV2+) - C34-11 (VV2-)	G - GR	VVT Sensor (for Intake Side of Bank 2)	Idling	Pulse generation (see waveform 5)
   C34-13 (EV1+) - C34-14 (EV1-)	W-R - R-B	VVT Sensor (for Exhaust Side of Bank 1)	Idling	Pulse generation (see waveform 6)
   C34-18 (EV2+) - C34-17 (EV2-)	L - P	VVT Sensor (for Exhaust Side of Bank 2)	Idling	Pulse generation (see waveform 6)
   C34-6 (NE+) - C34-5 (NE-)	B - W	Crankshaft position sensor	Idling	Pulse generation (see waveform 5)
   C36-24 (IGT1) - C36-12 (E1) C36-25 (IGT2) - C36-12 (E1) C36-26 (IGT3) - C36-12 (E1) C36-27 (IGT4) - C36-12 (E1) C36-28 (IGT5) - C36-12 (E1) C35-25 (IGT6) - C36-12 (E1)	R-Y - BR R-L - BR G-B - BR G-W - BR GR - BR L - BR	Ignition coil assembly (ignition signal)	Idling	Pulse generation (see waveform 7)
   C36-6 (IGF1) - C36-12 (E1)	G-R - BR	Ignition coil assembly (ignition confirmation signal)	Engine switch on (IG)	4.5 to 5.5 V
   			Idling	Pulse generation (see waveform 7)
   C36-18 (PRG) - C36-12 (E1)	P - BR	Purge VSV	Engine switch on (IG)	11 to 14 V
   			Idling	Pulse generation (see waveform 8)
   G55-18 (SPD) - C36-12 (E1)	R - BR	Vehicle speed signal from combination meter assembly	Driving at 20 km/h (12 mph)	Pulse generation (see waveform 9)
   G56-10 (STA) - C36-12 (E1)	W - BR	Starter signal	Cranking	5.5 V or more
   G56-18 (STP) - C36-12 (E1)	V - BR	Stop light switch	Brake pedal depressed	7.5 to 14 V
   			Brake pedal released	Below 1.5 V
   G55-8 (ST1-) - C36-12 (E1)	B - BR	Stop light switch (opposite to voltage at STP terminal)	Engine switch on (IG), Brake pedal depressed	Below 1.5 V
   			Engine switch on (IG), Brake pedal released	7.5 to 14 V
   C37-20 (M+) - C37-10 (ME01)	P - W-B	Throttle actuator	Idling with warm engine	Pulse generation (see waveform 10)
   C36-29 (M-) - C37-10 (ME01)	L - W-B	Throttle actuator	Idling with warm engine	Pulse generation (see waveform 11)
   G56-8 (FC) - C36-12 (E1)	G - BR	Fuel pump control	Idling	Below 1.5 V
   G55-3 (FPC) - C36-12 (E1)	G - BR	Fuel pump control	Engine switch on (IG)	Below 1.5 V
   G56-26 (DI) - C36-12 (E1)	GR - BR	Fuel pump control	Engine switch on (IG)	0 to 3.0 V
   C35-16 (PSP) - C36-12 (E1)	V - BR	Power steering oil pressure sensor	Engine switch on (IG)	0.3 to 4.7 V
   G56-28 (TC) - C36-12 (E1)	V - BR	Terminal TC of DLC3	Engine switch on (IG)	11 to 14 V
   G56-29 (TACH) - C36-12 (E1)	P - BR	Engine speed	Idling	Pulse generation (see waveform 13)
   C35-28 (ALT) - C36-12 (E1)	L - BR	Generator	Engine switch on (IG)	11 to 14 V
   G56-32 (CANH) - C36-12 (E1)	LG - BR	CAN communication line	Engine switch on (IG)	Pulse generation (see waveform 14)
   G56-31 (CANL) - C36-12 (E1)	W - BR	CAN communication line	Engine switch on (IG)	Pulse generation (see waveform 15)
   C35-29 (NEO) - C36-12 (E1)	P - BR	Engine speed signal sent to certification ECU (smart key ECU assembly)	Idling with warm engine	Pulse generation (see waveform 16)

   Tech Tips

   *: The ECM terminal voltage is constant regardless of the output voltage from the sensor.

2. 

   *a	5 V/DIV.
   *b	1 msec./DIV.

   Waveform 1

   Camshaft Timing Oil Control Valve Assembly

   Symbol	Between OC1+ and OC1- Between OC2+ and OC2- Between OE1+ and OE1- Between OE2+ and OE2-
   Tester Range	5 V/DIV., 1 msec./DIV.
   Condition	Idling

3. 

   *1	0.2 V/DIV.
   *2	200 msec./DIV.

   Waveform 2

   Heated Oxygen Sensor

   Symbol	Between OX1B and EX1B Between OX2B and EX2B
   Tester Range	0.2 V/DIV., 200 msec./DIV.
   Condition	Engine speed maintained at 2500 rpm for 2 minutes after warming up sensor

   Tech Tips

   In Data List, item O2S B1S2 and O2S B2S2 shows the ECM input values from the heated oxygen sensor.

4. 

   *1	20 V/DIV.
   *2	20 msec./DIV.

   Waveform 3

   Fuel Injector Assembly No. 1 (to No. 6) Injection Signal

   Symbol	Between #10 (to #60) and E01
   Tester Range	20 V/DIV., 20 msec./DIV.
   Condition	Idling

   Tech Tips

   The wavelength becomes shorter as the engine speed increases.

5. 

   *a	1 V/DIV.
   *b	1 msec./DIV.

   Waveform 4

   Knock Sensor

   Symbol	Between KNK1 and EKNK Between KNK2 and EKN2
   Tester Range	1 V/DIV., 1 msec./DIV.
   Condition	Engine speed maintained at 4000 rpm after warming up engine

   Tech Tips

   
   

   • The wavelength becomes shorter as the engine speed increases.

   • The waveforms and amplitudes displayed differ slightly depending on the vehicle.

6. 

   *a	5 V/DIV.
   *b	20 msec./DIV.

   Waveform 5

   Crankshaft Position Sensor and VVT Sensor (for Intake Side)

   Symbol	Between NE+ and NE- Between VV1+ and VV1- Between VV2+ and VV2-
   Tester Range	5 V/DIV., 20 msec./DIV.
   Condition	Idling

   Tech Tips

   The wavelength becomes shorter as the engine rpm increases.

7. 

   *a	5 V/DIV.
   *b	20 msec./DIV.

   Waveform 6

   Crankshaft position sensor and VVT sensor (for Exhaust Side)

   Symbol	Between NE+ and NE- Between EV1+ and EV1- Between EV2+ and EV2-
   Tester Range	5 V/DIV., 20 msec./DIV.
   Condition	Idling

   Tech Tips

   The wavelength becomes shorter as the engine rpm increases.

8. 

   *a	2 V/DIV.
   *b	20 msec./DIV.

   Waveform 7

   Igniter IGT Signal (from ECM to Igniter) and Igniter IGF Signal (from Igniter to ECM)

   Symbol	Between IGT (1 to 6) and E1 Between IGF1 and E1
   Tester Range	2 V/DIV., 20 msec./DIV.
   Condition	Idling

   Tech Tips

   The wavelength becomes shorter as the engine rpm increases.

9. 

   *1	10 V/DIV.
   *2	20 msec./DIV.

   Waveform 8

   Purge VSV

   Symbol	Between PRG and E1
   Tester Range	10 V/DIV., 20 msec./DIV.
   Condition	Idling

   Tech Tips

   If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.

10. 

    *a	2 V/DIV.
    *b	20 msec./DIV.

    Waveform 9

    Vehicle Speed Signal

    Symbol	Between SPD and E1
    Tester Range	2 V/DIV., 20 msec./DIV.
    Condition	Driving at 20 km/h (12 mph)

    Tech Tips

    The wavelength becomes shorter as the vehicle speed increases.

11. 

    *a	5 V/DIV.
    *b	1 msec./DIV.

    Waveform 10

    Throttle Actuator Positive Terminal

    Symbol	Between M+ and ME01
    Tester Range	5 V/DIV., 1 msec./DIV.
    Condition	Idling with warm engine

    Tech Tips

    The duty ratio varies depending on the throttle actuator operation.

12. 

    *a	5 V/DIV.
    *b	1 msec./DIV.

    Waveform 11

    Throttle Actuator Negative Terminal

    Symbol	Between M- and ME01
    Tester Range	5 V/DIV., 1 msec./DIV.
    Condition	Idling with warm engine

    Tech Tips

    The duty ratio varies depending on the throttle actuator operation.

13. 

    *a	5 V/DIV.
    *b	50 msec./DIV.

    Waveform 12

    Terminal DI of Air Injection Control Driver

    Symbol	Between AIDI and E1
    Tester Range	5 V/DIV., 50 msec./DIV.
    Condition	Performing system check using GTS (secondary air injection check)

    Tech Tips

    The wavelength changes when the air injection control driver detects malfunctions in the air injection system.

14. 

    *a	5 V/DIV.
    *b	10 msec./DIV.

    Waveform 13

    Engine Speed Signal

    Symbol	Between TACH and E1
    Tester Range	5 V/DIV., 10 msec./DIV.
    Condition	Idling

    Tech Tips

    The wavelength becomes shorter as the engine speed increases.

15. 

    *a	1 V/DIV.
    *b	10 μsec./DIV.

    Waveform 14

    CAN Communication Signal

    Symbol	Between CANH and E1
    Tester Range	1 V/DIV., 10 μsec./DIV.
    Condition	Engine stopped and engine switch on (IG)

    Tech Tips

    The waveform varies depending on the CAN communication signal.

16. 

    *a	1 V/DIV.
    *b	10 μsec./DIV.

    Waveform 15

    CAN Communication Signal

    Symbol	Between CANL and E1
    Tester Range	1 V/DIV., 10 μsec./DIV.
    Condition	Engine stopped and engine switch on (IG)

    Tech Tips

    The waveform varies depending on the CAN communication signal.

17. 

    *a	5 V/DIV.
    *b	2 msec./DIV.

    Waveform 16

    Engine Speed Signal

    Symbol	Between NEO and E1
    Tester Range	5 V/DIV., 2 msec./DIV.
    Condition	Idling with warm engine

    Tech Tips

    The wavelength becomes shorter as the engine speed increases.