Toyota Venza: Terminals Of Ecm

Toyota Venza Service Manual / 1ar-fe Engine Control / Sfi System / Terminals Of Ecm

TERMINALS OF ECM

HINT:

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.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A49-20 (BATT) - B58-104 (E1)	V - BR	Battery (for measuring battery voltage and for ECM memory)	Always	11 to 14 V
A49-3 (+BM) - B58-104 (E1)	BR - BR	Power source of throttle actuator	Always	11 to 14 V
A49-28 (IGSW) - B58-104 (E1)	SB - BR	Ignition switch	Ignition switch ON	11 to 14 V
A49-2 (+B) - B58-104 (E1)	R - BR	Power source of ECM	Ignition switch ON	11 to 14 V
A49-1 (+B2) - B58-104 (E1)	GR - BR	Power source of ECM	Ignition switch ON	11 to 14 V
B58-36 (OC1+) - B58-59 (OC1-)	L-R - G-B	Camshaft timing oil control valve assembly for intake camshaft	Idling	Pulse generation (see waveform 1)
A49-6 (MREL) - B58-104 (E1)	P - BR	EFI MAIN relay	Ignition switch ON	11 to 14 V
B58-94 (VG) - B58-117 (E2G)	R - L-W	Mass air flow meter	Idling, shift lever in P or N, A/C switch off	0.5 to 3.0 V
B58-116 (THA) - B58-93 (ETHA)	L-B - W-B	Intake air temperature sensor (built into mass air flow meter)	Idling, intake air temperature 20°C (68°F)	0.5 to 3.4 V
B58-64 (THW) - B58-65 (ETHW)	G-B - B	Engine coolant temperature sensor	Idling, engine coolant temperature 80°C (176°F)	0.2 to 1.0 V
B58-88 (VCTA) - B58-111 (ETA)	Y-B - W-B	Power source of throttle position sensor (specific voltage)	Ignition switch ON	4.5 to 5.5 V
B58-90 (VTA1) - B58-111 (ETA)	R-W - W-B	Throttle position sensor (for engine control)	Ignition switch ON, accelerator pedal fully released	0.5 to 1.1 V
B58-90 (VTA1) - B58-111 (ETA)	R-W - W-B	Throttle position sensor (for engine control)	Ignition switch ON, accelerator pedal fully depressed	3.2 to 4.8 V
B58-89 (VTA2) - B58-111 (ETA)	B-R - W-B	Throttle position sensor (for sensor malfunction detection)	Ignition switch ON, accelerator pedal fully released	2.1 to 3.1 V
B58-89 (VTA2) - B58-111 (ETA)	B-R - W-B	Throttle position sensor (for sensor malfunction detection)	Ignition switch ON, accelerator pedal fully depressed	4.6 to 5.0 V
A49-55 (VPA) - A49-59 (EPA)	L - GR	Accelerator pedal position sensor (for engine control)	Ignition switch ON, accelerator pedal fully released	0.5 to 1.1 V
A49-55 (VPA) - A49-59 (EPA)	L - GR	Accelerator pedal position sensor (for engine control)	Ignition switch ON, accelerator pedal fully depressed	2.6 to 4.5 V
A49-56 (VPA2) - A49-60 (EPA2)	BE - LG	Accelerator pedal position sensor (for sensor malfunction detection)	Ignition switch ON, accelerator pedal fully released	1.2 to 2.0 V
A49-56 (VPA2) - A49-60 (EPA2)	BE - LG		Ignition switch ON, accelerator pedal fully depressed	3.4 to 4.75 V
A49-57 (VCPA) - A49-59 (EPA)	G - GR	Power source of accelerator pedal position sensor (for VPA)	Ignition switch ON	4.5 to 5.5 V
A49-58 (VCP2) - A49-60 (EPA2)	Y - LG	Power source of accelerator pedal position sensor (for VPA2)	Ignition switch ON	4.5 to 5.5 V
B58-18 (HA1A) - B58-46 (E04)	BR - W-B	Air fuel ratio sensor heater	Idling	Pulse generation (see waveform 2)
B58-18 (HA1A) - B58-46 (E04)	BR - W-B	Air fuel ratio sensor heater	Ignition switch ON	11 to 14 V
B58-103 (A1A+) - B58-104 (E1)	P - BR	Air fuel ratio sensor	Ignition switch ON	3.3 V*1
B58-126 (A1A-) - B58-104 (E1)	L - BR	Air fuel ratio sensor	Ignition switch ON	2.9 V*1
B58-41 (HT1B) - B58-86 (E03)	Y - B	Heated oxygen sensor heater	Ignition switch ON	11 to 14 V
B58-125 (OX1B) - B58-102 (O1B-)	G - R	Heated oxygen sensor	Engine speed maintained at 2500 rpm for 2 minutes after warming up engine	Pulse generation (see waveform 3)
B58-85 (#10) - B58-109 (E01) B58-84 (#20) - B58-109 (E01) B58-83 (#30) - B58-109 (E01) B58-82 (#40) - B58-109 (E01)	G - W Y - W R - W L-R - W	Fuel injector	Ignition switch ON	11 to 14 V
	G - W Y - W R - W L-R - W	Fuel injector	Idling	Pulse generation (see waveform 4)
B58-87 (KNK1) - B58-110 (EKNK)	R - G	Knock sensor	Engine speed maintained at 4000 rpm after warming up engine	Pulse generation (see waveform 5)
B58-76 (G2+) - B58-122 (G2-)	P - V	Camshaft position sensor for intake camshaft	Idling	Pulse generation (see waveform 7)
B58-74 (NE+) - B58-120 (NE-)	R - G	Crankshaft position sensor	Idling	Pulse generation (see waveform 6)
A49-53 (NEO)*2 - B58-104 (E1)	GR - BR	Crankshaft position sensor	Idling with warm engine	Pulse generation (see waveform 18)
B58-108 (IGT1) - B58-104 (E1) B58-107 (IGT2) - B58-104 (E1) B58-106 (IGT3) - B58-104 (E1) B58-105 (IGT4) - B58-104 (E1)	R-L - BR P - BR Y-B - BR L-Y - BR	Ignition coil (ignition signal)	Idling	Pulse generation (see waveform 8)
B58-23 (IGF1) - B58-104 (E1)	W-R - BR	Ignition coil (ignition confirmation signal)	Ignition switch ON	4.5 to 5.5 V
B58-23 (IGF1) - B58-104 (E1)	W-R - BR	Ignition coil (ignition confirmation signal)	Idling	Pulse generation (see waveform 8)
B58-28 (PRG) - B58-104 (E1)	G - BR	Purge VSV	Ignition switch ON	11 to 14 V
B58-28 (PRG) - B58-104 (E1)	G - BR	Purge VSV	Idling, under purge control	Pulse generation (see waveform 9)
A49-15 (SPD) - B58-104 (E1)	BR - BR	Speed signal from combination meter	Vehicle driven at 20 km/h (12 mph)	Pulse generation (see waveform 10)
A49-48 (STA) - B58-104 (E1)	BR - BR	Starter signal	Cranking	6 V or higher
B58-47 (NSW) - B58-104 (E1)	G - BR	Park/neutral position switch signal	Ignition switch ON, shift lever in P or N	Below 3.0 V
B58-47 (NSW) - B58-104 (E1)	G - BR	Park/neutral position switch signal	Ignition switch ON, shift lever not in P or N	11 to 14 V
A49-29 (STP) - B58-104 (E1)	G - BR	Stop light switch assembly	Brake pedal depressed	7.5 to 14 V
A49-29 (STP) - B58-104 (E1)	G - BR	Stop light switch assembly	Brake pedal released	Below 1.5 V
A49-39 (ST1-) - B58-104 (E1)	V - BR	Stop light switch assembly (opposite to voltage at STP terminal)	Ignition switch ON, brake pedal depressed	Below 1.5 V
A49-39 (ST1-) - B58-104 (E1)	V - BR		Ignition switch ON, brake pedal released	7.5 to 14 V
B58-21 (M+) - B58-19 (ME01)	Y - B	Throttle actuator	Idling with warm engine	Pulse generation (see waveform 11)
B58-20 (M-) - B58-19 (ME01)	L - B	Throttle actuator	Idling with warm engine	Pulse generation (see waveform 12)
A49-8 (FC) - B58-104 (E1)	LG - BR	Fuel pump control	Ignition switch ON	11 to 14 V
A49-8 (FC) - B58-104 (E1)	LG - BR	Fuel pump control	Idling	Below 1.5 V
A49-36 (W) - B58-104 (E1)	R - BR	MIL	Ignition switch ON (MIL turns on)	Below 1.5 V
A49-36 (W) - B58-104 (E1)	R - BR	MIL	Idling	11 to 14 V
A49-7 (TC) - B58-104 (E1)	V - BR	Terminal TC of DLC3	Ignition switch ON	11 to 14 V
A49-26 (TACH) - B58-104 (E1)	Y - BR	Engine speed	Idling	Pulse generation (see waveform 13)
A49-42 (VPMP) - B58-104 (E1)	BE - BR	Vent valve (built into canister pump module)	Ignition switch ON	11 to 14 V
A49-34 (MPMP) - B58-104 (E1)	V - BR	Leak detection pump (built into canister pump module)	Leak detection pump OFF	Below 3 V
A49-34 (MPMP) - B58-104 (E1)	V - BR	Leak detection pump (built into canister pump module)	Leak detection pump ON	9 to 14 V
B58-113 (VCPP) - B58-112 (EPPM)	LG - W	Power source for canister pressure sensor (specific voltage)	Ignition switch ON	4.5 to 5.5 V
B58-114 (PPMP) - B58-112 (EPPM)	Y - W	Canister pressure sensor (built into canister pump module)	Ignition switch ON	3.0 to 3.6 V
A49-21 (FANL) - B58-104 (E1)	L - BR	FAN NO. 3 relay	Ignition switch ON	Below 1.5 V
A49-21 (FANL) - B58-104 (E1)	L - BR	FAN NO. 3 relay	Idling with A/C ON, or high engine coolant temperature	Below 1.5 V
A49-22 (FANH) - B58-104 (E1)	P - BR	FAN NO. 1 and FAN NO. 2 relay	Idling with high engine coolant temperature	Below 1.5 V
B58-39 (ALT) - B58-104 (E1)	L - BR	Generator	Ignition switch ON	11 to 14 V
A49-13 (CANH) - B58-104 (E1)	Y - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 14)
A49-5 (CANL) - B58-104 (E1)	W - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 15)
B58-27 (ACIS) - B58-104 (E1)	R-Y - BR	VSV for Acoustic Control Induction System (ACIS) operation signal	Ignition switch ON	11 to 14 V
B58-35 (OE1+) - B58-58 (OE1-)	G - GR	Camshaft timing oil control valve assembly for exhaust camshaft	Idling	Pulse generation (see waveform 1)
B58-99 (VCV1) - B58-104 (E1)	LG - BR	Power source of camshaft position sensor for intake camshaft (specific voltage)	Ignition switch ON	4.5 to 5.5 V
B58-98 (VCE1) - B58-104 (E1)	BR - BR	Power source of camshaft position sensor for exhaust camshaft (specific voltage)	Ignition switch ON	4.5 to 5.5 V
B58-75 (EV1+) - B58-121 (EV1-)	Y - BR	Camshaft position sensor for exhaust camshaft	Idling	Pulse generation (see waveform 7)
B58-4 (IA1+) - B58-109 (E01)	BR - W	DC motor for tumble control valve	Idling with cold engine	Pulse generation (see waveform 16)
B58-3 (IA1-) - B58-109 (E01)	LG - W	DC motor for tumble control valve	Idling with cold engine	Pulse generation (see waveform 17)
B58-70 (IAC1) - B58-71 (EIA1)	R-W - B-R	Tumble control valve position sensor	Ignition switch ON	3.0 to 4.0 V
B58-72 (VCIA) - B58-104 (E1)	W-L - BR	Power source of tumble control valve position sensor (specific voltage)	Ignition switch ON	4.5 to 5.5 V
B58-24 (CAN+) - B58-104 (E1)	R - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 14)
B58-1 (CAN-) - B58-104 (E1)	W - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 15)
A49-12 (CANP)*2 - B58-104 (E1)	G - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 14)
A49-4 (CANN)*2 - B58-104 (E1)	W - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 15)
A49-16 (SFTU) - B58-104 (E1)	R - BR	Up shift switch signal	Ignition switch ON and shift lever in S	11 to 14 V
A49-16 (SFTU) - B58-104 (E1)	R - BR	Up shift switch signal	Ignition switch ON and shift lever in S, the "+" range (up shift) selected	Below 1 V
A49-51 (SFTD) - B58-104 (E1)	LG - BR	Down shift switch signal	Ignition switch ON and shift lever in S	11 to 14 V
A49-51 (SFTD) - B58-104 (E1)	LG - BR	Down shift switch signal	Ignition switch ON and shift lever in S, the "-" range (down shift) selected	Below 1 V
B58-32 (P) - B58-104 (E1)	Y - BR	P shift position switch signal	Ignition switch ON and shift lever in P	11 to 14 V
B58-32 (P) - B58-104 (E1)	Y - BR	P shift position switch signal	Ignition switch ON and shift lever in any position other than P	Below 1 V
B58-33 (R) - B58-104 (E1)	V - BR	R shift position switch signal	Ignition switch ON and shift lever in R	11 to 14 V
B58-33 (R) - B58-104 (E1)	V - BR	R shift position switch signal	Ignition switch ON and shift lever in any position other than R	Below 1 V
B58-34 (N) - B58-104 (E1)	L-B - BR	N shift position switch signal	Ignition switch ON and shift lever in N	11 to 14 V
B58-34 (N) - B58-104 (E1)	L-B - BR	N shift position switch signal	Ignition switch ON and shift lever in any position other than N	Below 1 V
B58-30 (D) - B58-104 (E1)	BR - BR	D shift position switch signal	Ignition switch ON and shift lever in D	11 to 14 V
B58-30 (D) - B58-104 (E1)	BR - BR	D shift position switch signal	Ignition switch ON and shift lever in any position other than D	Below 1 V
A49-14 (S) - B58-104 (E1)	BE - BR	S shift position switch signal	Ignition switch ON and shift lever in S	11 to 14 V
A49-14 (S) - B58-104 (E1)	BE - BR	S shift position switch signal	Ignition switch ON and shift lever in any position other than S	Below 1 V

*1: The ECM terminal voltage is constant regardless of the output voltage shown on the Techstream.
*2: w/ Smart Key System

1. WAVEFORM 1

Camshaft Timing Oil Control Valve
Assembly Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-36 (OC1+) - B58-59 (OC1-)	5 V/DIV, 1 ms/DIV	Idling
B58-35 (OE1+) - B58-58 (OE1-)	5 V/DIV, 1 ms/DIV	Idling

2. WAVEFORM 2

Air Fuel Ratio Sensor (Bank 1 Sensor
1) Heater Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-18 (HA1A) - B58-46 (E04)	5 V/DIV, 10 ms/DIV	Idling

3. WAVEFORM 3

Heated Oxygen Sensor (Bank 1 Sensor
2) Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-125 (OX1B) - B58-102 (O1B-)	0.2 V/DIV, 200 ms/DIV	Engine speed maintained at 2500 rpm for 2 minutes after warming up engine

HINT:

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

4. WAVEFORM 4

Injector No. 1 (to No. 4) Injection
Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-85 (#10) - B58-109 (E01)	20 V/DIV, 20 ms/DIV	Idling
B58-84 (#20) - B58-109 (E01)	20 V/DIV, 20 ms/DIV	Idling
B58-83 (#30) - B58-109 (E01)	20 V/DIV, 20 ms/DIV	Idling
B58-82 (#40) - B58-109 (E01)	20 V/DIV, 20 ms/DIV	Idling

HINT:

The wavelength becomes shorter as the engine speed increases.

5. WAVEFORM 5

Knock Sensor Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-87 (KNK1) - B58-110 (EKNK)	1 V/DIV, 1 ms/DIV	Engine speed maintained at 4000 rpm after warming up engine

HINT:

The wavelength becomes shorter as the engine speed increases.
The waveforms and amplitudes displayed differ slightly depending on the vehicle.

6. WAVEFORM 6

Crankshaft Position Sensor Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-74 (NE+) - B58-120 (NE-)	5 V/DIV, 20 ms/DIV	Idling

HINT:

The wavelength becomes shorter as the engine speed increases.

7. WAVEFORM 7

Camshaft Position Sensor Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-76 (G2+) - B58-122 (G2-)	5 V/DIV, 20 ms/DIV	Idling
B58-75 (EV1+) - B58-121 (EV1-)	5 V/DIV, 20 ms/DIV	Idling

HINT:

The wavelength becomes shorter as the engine speed increases.

8. WAVEFORM 8

Ignition Coil IGT Signal (from ECM
to Ignition Coil) and Ignition Coil IGF Signal (from Ignition Coil to ECM)

Terminal No. (Symbol)	Tool Setting	Condition
B58-108 (IGT1) - B58-104 (E1)	2 V/DIV, 20 ms/DIV	Idling
B58-107 (IGT2) - B58-104 (E1)	2 V/DIV, 20 ms/DIV	Idling
B58-106 (IGT3) - B58-104 (E1)	2 V/DIV, 20 ms/DIV	Idling
B58-105 (IGT4) - B58-104 (E1)	2 V/DIV, 20 ms/DIV	Idling
B58-23 (IGF1) - B58-104 (E1)	2 V/DIV, 20 ms/DIV	Idling

HINT:

The wavelength becomes shorter as the engine speed increases.

9. WAVEFORM 9

Purge VSV Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-28 (PRG) - B58-104 (E1)	10 V/DIV, 20 ms/DIV	Idling, under purge control

HINT:

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

10. WAVEFORM 10

Vehicle Speed Signal

Terminal No. (Symbol)	Tool Setting	Condition
A49-15 (SPD) - B58-104 (E1)	2 V/DIV, 20 ms/DIV	Vehicle driven at 20 km/h (12 mph)

HINT:

The wavelength becomes shorter as the vehicle speed increases.

11. WAVEFORM 11

Throttle Actuator Positive Terminal
Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-21 (M+) - B58-19 (ME01)	5 V/DIV, 1 ms/DIV	Idling with warm engine

HINT:

The duty ratio varies depending on the throttle actuator operation.

12. WAVEFORM 12

Throttle Actuator Negative Terminal
Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-20 (M-) - B58-19 (ME01)	5 V/DIV, 1 ms/DIV	Idling with warm engine

HINT:

The duty ratio varies depending on the throttle actuator operation.

13. WAVEFORM 13

Engine Speed Signal

Terminal No. (Symbol)	Tool Setting	Condition
A49-26 (TACH) - B58-104 (E1)	5 V/DIV, 10 ms/DIV	Idling

HINT:

The wavelength becomes shorter as the engine speed increases.

14. WAVEFORM 14

CAN Communication Signal (Reference)

Terminal No. (Symbol)	Tool Setting	Condition
A49-13 (CANH) - B58-104 (E1)	1 V/DIV, 10 μs/DIV	Ignition switch ON
B58-24 (CAN+) - B58-104 (E1)	1 V/DIV, 10 μs/DIV	Ignition switch ON
A49-12 (CANP) - B58-104 (E1)	1 V/DIV, 10 μs/DIV	Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

15. WAVEFORM 15

CAN Communication Signal (Reference)

Terminal No. (Symbol)	Tool Setting	Condition
A49-5 (CANL) - B58-104 (E1)	1 V/DIV, 10 μs/DIV	Ignition switch ON
B58-1 (CAN-) - B58-104 (E1)	1 V/DIV, 10 μs/DIV	Ignition switch ON
A49-4 (CANN) - B58-104 (E1)	1 V/DIV, 10 μs/DIV	Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

16. WAVEFORM 16

DC Motor for Tumble Control Valve
Positive Terminal Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-4 (IA1+) - B58-109 (E01)	5 V/DIV, 1 ms/DIV	Idling with cold engine

17. WAVEFORM 17

DC Motor for Tumble Control Valve
Negative Terminal Signal

Terminal No. (Symbol)	Tool Setting	Condition
B58-3 (IA1-) - B58-109 (E01)	5 V/DIV, 1 ms/DIV	Idling with cold engine

18. WAVEFORM 18

Crankshaft Position Sensor Signal

Terminal No. (Symbol)	Tool Setting	Condition
A49-53 (NEO) - B58-104 (E1)	5 V/DIV, 2 ms/DIV	Idling with warm engine

Readiness Monitor Drive Pattern

READINESS MONITOR DRIVE PATTERN 1. PURPOSE OF READINESS TESTS The On-Board Diagnostic (OBD II) system is designed to monitor the performance of emission related components, and indicate a ...

Diagnosis System

DIAGNOSIS SYSTEM 1. DESCRIPTION When troubleshooting OBD II (On-Board Diagnostics) vehicles, an OBD II scan tool (complying with SAE J1987) must be connected to the DLC3 (Data Link Co ...

Other materials about Toyota Venza:

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use the following procedures to troubleshoot the tire pressure warning system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT ...

Removal
REMOVAL PROCEDURE 1. REMOVE AIR CONDITIONING UNIT ASSEMBLY (See page ) 2. REMOVE NO. 1 FINISH PANEL MOUNTING BRACKET 3. REMOVE NO. 2 FINISH PANEL MOUNTING BRACKET 4. REMOVE NO. 3 AIR DUCT SUB-ASSEMBLY 5. REMOVE NO. 2 AIR DUCT SUB-ASSEMBLY ...

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART HINT: If a DTC is displayed during the DTC check, check the parts listed in the table below and proceed to the "See page" given. If multiple suspected areas are listed, the potential causes of the s ...