Toyota Venza manuals

Toyota Venza: Terminals Of Ecu

TERMINALS OF ECU

1. COMBINATION METER ASSEMBLY


(a) Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

E1-1 (CANH) - Body ground

LG - Body ground

CAN communication signal

Ignition switch off

200 Ω or higher

E1-2 (VSCW) - Body ground

V - Body ground

TRAC OFF indicator light signal

Ignition switch ON, TRAC OFF indicator light off

11 to 14 V

Ignition switch ON, TRAC OFF indicator light blinks

Below 1 V

E1-3 (SLIP) - Body ground

R - Body ground

Slip indicator light signal

Ignition switch ON, slip indicator light off

11 to 14 V

Ignition switch ON, slip indicator light blinks

Below 1 V

E1-4 (W)*4 - Body ground

GR - Body ground

Washer level warning light signal

Ignition switch ON, washer level warning light off

11 to 14 V

Ignition switch ON, washer level warning light on

Below 1 V

E1-5 (P/SB) - Body ground

G - Body ground

Front passenger side seat belt warning light signal

Ignition switch ON, front passenger side seat belt warning light off

11 to 14 V

Ignition switch ON, front passenger side seat belt warning light on

Below 1 V

E1-6 (W) - Body ground

P - Body ground

Tire pressure warning light signal

Ignition switch ON, tire pressure warning light off

11 to 14 V

Ignition switch ON, tire pressure warning light on

Below 1 V

E1-7 (MGND)*1 - Body ground

B - Body ground

Ground

Always

Below 1 V

E1-8 (SI) - Body ground

V - Body ground

Speed signal (Input)

Ignition switch ON, front wheel turns slowly

Pulse generation (See waveform 1)

E1-9 (CANL) - Body ground

W - Body ground

CAN communication signal

Ignition switch off

200 Ω or higher

E1-11 (SLOF) - Body ground

P - Body ground

VSC OFF indicator light signal

Ignition switch ON, VSC OFF indicator light off

11 to 14 V

Ignition switch ON, VSC OFF indicator light on

Below 1 V

E1-12 (E)*6 - Body ground

LG - Body ground

Key warning light*4 or master warning light*3 signal

Ignition switch ON, key warning light*4 or master warning light*3 off

11 to 14 V

Ignition switch ON, key warning light*4 or master warning light*3 on

Below 1 V

E1-13 (WA)*5 - Body ground

L - Body ground

AWD warning light signal

Ignition switch ON, AWD warning light off

11 to 14 V

Ignition switch ON, AWD warning light on

Below 1 V

E1-14 (IND) - Body ground

V - Body ground

EPS warning light signal

Ignition switch ON, EPS warning light off

11 to 14 V

Ignition switch ON, EPS warning light on

Below 1 V

E1-15 (ILL+) - Body ground

SB - Body ground

Illumination signal

Headlight dimmer switch off

Below 1 V

Headlight dimmer switch tail or head

11 to 14 V

E1-16 (+S) - Body ground

L - Body ground

Speed signal for other systems (Output)

Ignition switch ON, front wheel turns slowly

Pulse generation (See waveform 1)

E2-1 (B2) - Body ground

L - Body ground

Battery

Always

11 to 14 V

E2-2 (B) - Body ground

P - Body ground

Turn indicator light signal

Ignition switch ON, turn RH indicator light off

11 to 14 V

Ignition switch ON, turn RH indicator light blinks

Below 1 V

E2-3 (B) - Body ground

SB - Body ground

Turn indicator light signal

Ignition switch ON, turn LH indicator light off

11 to 14 V

Ignition switch ON, turn LH indicator light blinks

Below 1 V

E2-4 (LCL+) - Body ground

LG - Body ground

Accessory meter assembly communication signal

Always

Pulse generation

E2-5 (MDAT) - Body ground

P - Body ground

Accessory meter assembly communication signal

Always

Pulse generation

E2-6 (A/B) - Body ground

L - Body ground

Drive monitor switch signal (INFO CLOCK*4 or INFO*3 switch)

Ignition switch ON, INFO CLOCK*4 or INFO*3 switch pressed

Below 1 V

Ignition switch ON, INFO CLOCK*4 or INFO*3 switch not pressed

11 to 14 V

E2-7 (RSET) - Body ground

SB - Body ground

Drive monitor switch signal (RESET H*4 or SELECT RESET*3 switch)

Ignition switch ON, RESET H*4 or SELECT RESET*3 switch pressed

Below 1 V

Ignition switch ON, RESET H*4 or SELECT RESET*3 switch not pressed

11 to 14 V

E2-8 (CHG-) - Body ground

Y - Body ground

Charge warning light signal

Ignition switch ON, charge warning light off

11 to 14 V

Ignition switch ON, oil pressure warning light on

Below 1 V

E2-9 (FR) - Body ground

V - Body ground

Fuel level signal

Ignition switch ON, fuel level warning light off

Below 1 V

Ignition switch ON, fuel level warning light on

3 to 7 V

E2-10 (WLVL) - Body ground

L - Body ground

Washer level warning light signal

Ignition switch ON, washer level warning light off

11 to 14 V

Ignition switch ON, washer level warning light blinks

Below 1 V

E2-11 (E1) - Body ground

B - Body ground

Ground (Power ground)

Always

Below 1 V

E2-12 (ILL-) - Body ground

L - Body ground

Illumination signal

Headlight dimmer switch off

Below 1 V

Headlight dimmer switch tail or head

11 to 14 V

E2-13 (IG+) - Body ground

BR - Body ground

Ignition switch signal

Ignition switch ON

11 to 14 V

E2-14 (B) - Body ground

Y - Body ground

Battery

Always

11 to 14 V

E2-16 (LCL-)*3 - Body ground

B - Body ground

Ground

Always

Below 1 V

E2-17 (SYNC) - Body ground

R - Body ground

Accessory meter assembly communication signal

Always

Pulse generation

E2-18 (E) - Body ground

G - Body ground

Drive monitor switch signal (US/M M*4 or SETUP*3 switch)

Ignition switch ON, US/M M*4 or SETUP*3 switch pressed

Below 1 V

Ignition switch ON, US/M M*4 or SETUP*3 switch not pressed

11 to 14 V

E2-19 (B/LE) - Body ground

BE - Body ground

Brake fluid level warning light signal

Ignition switch ON, brake fluid level warning light off

Below 1 V

Ignition switch ON, brake fluid level warning light on

11 to 14 V

E2-20 (S) - Body ground

P - Body ground

Oil pressure switch signal

Ignition switch ON, oil pressure warning light off

Below 1 V

Ignition switch ON, oil pressure warning light on

11 to 14 V

E2-21 (TIRE) - Body ground

LG - Body ground

Tire pressure warning light signal

Ignition switch ON, tire pressure warning light off

11 to 14 V

Ignition switch ON, tire pressure warning light blinks

Below 1 V

E2-22 (LVWG)*7 - Body ground

BR - Body ground

Leveling indicator light signal

Ignition switch ON, leveling indicator light off

11 to 14 V

Ignition switch ON, leveling indicator light blinks

Below 1 V

E2-23 (FE) - Body ground

R - Body ground

Ground (Fuel ground)

Always

Below 1 V

E2-24 (ES) - Body ground

W - Body ground

Ground (Signal ground)

Always

Below 1 V

  • *1: w/ Navigation System
  • *2: w/o Smart Key System
  • *3: w/ Multi-information Display
  • *4: w/o Multi-information Display
  • *5: for AWD
  • *6: w/ Smart Key System
  • *7: w/ Automatic Type Headlight Beam Level Control

(b) Waveform 1 (Reference): Using an oscilloscope:


Item

Condition

Tool setting

5 V/DIV., 20 ms./DIV.

Vehicle condition

Ignition switch ON, front wheel turns slowly

HINT:

When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

2. COMBINATION METER ASSEMBLY INNER CIRCUIT

(a) Combination Meter Assembly Inner Circuit





Terminal No. (Symbol)

Wire Harness Side

E1

1 (CANH)

CAN Communication Line

2 (VSCW)

Accessory Meter Assembly

3 (SLIP)

Accessory Meter Assembly

4 (W)

Accessory Meter Assembly*4

5 (P/SB)

Accessory Meter Assembly

6 (W)

Accessory Meter Assembly

7 (MGND)

Ground*1

8 (SI)

Skid Control ECU

9 (CANL)

CAN Communication Line

10

-

11 (SLOF)

Accessory Meter Assembly

12 (E)

Accessory Meter Assembly*5

13 (WA)

Accessory Meter Assembly*2

14 (IND)

Accessory Meter Assembly

15 (ILL+)

Accessory Meter Assembly

16 (+S)

Each part that uses the speed signal

E2

1 (B2)

DOME Fuse

2 (B)

Turn Signal Flasher

3 (B)

Turn Signal Flasher

4 (LCL+)

Accessory Meter Assembly

5 (MDAT)

Accessory Meter Assembly

6 (A/B)

Drive Monitor Switch (INFO CLOCK*4 or INFO*3 Switch)

7 (RSET)

Drive Monitor Switch (RESET H*4 or SELECT RESET*3 Switch)

8 (CHG-)

Generator

9 (FR)

Fuel Sender Gauge Assembly

10 (WLVL)

Washer Level Warning Switch

11 (E1)

Ground

12 (ILL-)

Each illumination part

13 (IG+)

GAUGE NO. 2 Fuse

14 (B)

ECU-B Fuse

15

-

16 (LCL-)

Ground*3

17 (SYNC)

Accessory Meter Assembly

18 (E)

Drive Monitor Switch (US/M M*4 or SETUP*3 Switch)

19 (B/LE)

Brake Fluid Level Warning Switch

20 (S)

Oil Pressure Switch

21 (TIRE)

Tire Pressure Warning ECU

22 (LVWG)

Headlight Leveling ECU Assembly*6

23 (FE)

Ground (Fuel Sender Gauge Assembly Ground)

24 (ES)

Ground (Signal Ground)

  • *1: w/ Navigation System
  • *2: for AWD
  • *3: w/ Multi-information Display
  • *4: w/o Multi-information Display
  • *5: w/ Smart Key System
  • *6: w/ Automatic Type Headlight Beam Level Control

3. ACCESSORY METER ASSEMBLY


(a) Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F5-1 (IG)*1 - Body ground

P - Body ground

Ignition switch signal

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

F5-2 (HSI+)*1 - Body ground

LG - Body ground

Communication signal

Ignition switch off

Below 1 V

F5-6 (SYNC)*1 - Body ground

R - Body ground

Communication signal

Always

Pulse generation

F5-9 (+B)*1 - Body ground

L - Body ground

Battery

Always

11 to 14 V

F5-12 (DATA)*1 - Body ground

P - Body ground

Communication signal

Always

Pulse generation

F5-16 (SGND)*1 - Body ground

B - Body ground

Ground

Always

Below 1 V

F2-1 (B) - Body ground

P - Body ground

Battery

Always

11 to 14 V

F2-2 (SEC)*4 - Body ground

SB - Body ground

Security indicator light signal

Ignition switch ON, security indicator light off

11 to 14 V

Ignition switch ON, security indicator light blinks

Below 1 Ω

F2-3 (HSI+)*5 - Body ground

LG - Body ground

Communication signal

Ignition switch off

Below 1 V

F2-4 (DATA)*5 - Body ground

P - Body ground

Communication signal

Always

Pulse generation

F2-5 (SG8) - Body ground

V - Body ground

TRAC OFF indicator light signal

Ignition switch ON, TRAC OFF indicator light off

11 to 14 V

Ignition switch ON, TRAC OFF indicator light blinks

Below 1 V

F2-6 (SG3) - Body ground

R - Body ground

Slip indicator light signal

Ignition switch ON, slip indicator light off

11 to 14 V

Ignition switch ON, slip indicator light blinks

Below 1 V

F2-7 (SG6)*5 - Body ground

GR - Body ground

Washer level warning light signal

Ignition switch ON, washer level warning light off

11 to 14 V

Ignition switch ON, washer level warning light on

Below 1 V

F2-8 (SG2)*2 - Body ground

L - Body ground

AWD warning light signal

Ignition switch ON, AWD warning light off

11 to 14 V

Ignition switch ON, AWD warning light on

Below 1 V

F2-9 (SG1) - Body ground

P - Body ground

Tire pressure warning light signal

Ignition switch ON, tire pressure warning light off

11 to 14 V

Ignition switch ON, tire pressure warning light on

Below 1 V

F2-10 (CHK) - Body ground

R - Body ground

MIL (Check engine warning light) signal

Ignition switch ON, tire pressure warning light off

11 to 14 V

Ignition switch ON, tire pressure warning light on

Below 1 V

F2-11 (P-AB) - Body ground

GR - Body ground

Passenger airbag OFF indicator light signal

Ignition switch ON, passenger airbag OFF indicator light off

11 to 14 V

Ignition switch ON, passenger airbag OFF indicator light on

Below 1 V

F2-12 (E) - Body ground

B - Body ground

Ground

Always

Below 1 Ω

F2-13 (IG+) - Body ground

L - Body ground

Ignition switch signal

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

F2-14 (LP) - Body ground

Y - Body ground

Security indicator light signal

Ignition switch ON, security indicator light off

11 to 14 V

Ignition switch ON, security indicator light blinks

11 to 14 V ←→ Below 1 V

F2-16 (SYNC)*5 - Body ground

R - Body ground

Communication signal

Always

Pulse generation

F2-18 (SG4) - Body ground

P - Body ground

VSC OFF indicator light signal

Ignition switch ON, VSC OFF indicator light off

11 to 14 V

Ignition switch ON, VSC OFF indicator light on

Below 1 V

F2-19 (SG7)*3 - Body ground

LG - Body ground

Key warning light*5 or master warning light*1 signal

Ignition switch ON, key warning light*5 or master warning light*1 off

11 to 14 V

Ignition switch ON, key warning light*5 or master warning light*1 on

Below 1 V

F2-20 (PBEW) - Body ground

G - Body ground

Front passenger side seat belt warning light signal

Ignition switch ON, front passenger side seat belt warning light off

11 to 14 V

Ignition switch ON, front passenger side seat belt warning light on

Below 1 V

F2-21 (SG5) - Body ground

V - Body ground

EPS warning light signal

Ignition switch ON, EPS warning light off

11 to 14 V

Ignition switch ON, EPS warning light on

Below 1 V

F2-22 (ILL+) - Body ground

SB - Body ground

Illumination signal

Headlight dimmer switch off

Below 1 V

Headlight dimmer switch tail or head

11 to 14 V

F2-23 (PAON) - Body ground

Y - Body ground

Passenger airbag ON indicator light signal

Ignition switch ON, passenger airbag ON indicator light off

11 to 14 V

Ignition switch ON, passenger airbag ON indicator light on

Below 1 V

  • *1: w/ Multi-information Display
  • *2: for AWD
  • *3: w/ Smart Key System
  • *4: w/ Theft Deterrent System
  • *5: w/o Multi-information Display

4. ACCESSORY METER ASSEMBLY INNER CIRCUIT

(a) w/o Multi-information Display



Terminal No. (Symbol)

Wire Harness Side

F2

1 (B)

ECU-B Fuse

2 (SEC)

Main Body ECU (Driver Side Junction Block Assembly)

3 (HSI+)

Combination Meter Assembly

4 (DATA)

Combination Meter Assembly

5 (SG8)

Combination Meter Assembly

6 (SG3)

Combination Meter Assembly

7 (SG6)

Combination Meter Assembly

8 (SG2)

Combination Meter Assembly*1

9 (SG1)

Combination Meter Assembly

10 (CHK)

ECM

11 (P-AB)

Center Airbag Sensor Assembly

12 (E)

Ground

13 (IG+)

GAUGE NO. 2 Fuse

14 (LP)

Certification ECU (Smart Key ECU Assembly)*2 or Transponder Key ECU Assembly*3

15

-

16 (SYNC)

Combination Meter Assembly

17

-

18 (SG4)

Combination Meter Assembly

19 (SG7)

Combination Meter Assembly*2

20 (PBEW)

Combination Meter Assembly

21 (SG5)

Combination Meter Assembly

22 (ILL+)

Combination Meter Assembly

23 (PAON)

Center Airbag Sensor Assembly

24

-

  • *1: for AWD
  • *2: w/ Smart Key System
  • *3: w/o Smart Key System

(b) w/ Multi-information Display



Terminal No. (Symbol)

Wire Harness Side

F5

1 (IG)

GAUGE NO. 2 Fuse

2 (HSI+)

Combination Meter Assembly

3

-

4

-

5

-

6 (SYNC)

Combination Meter Assembly

7

-

8

-

9 (+B)

ECU-B Fuse

10

-

11

-

12 (DATA)

Combination Meter Assembly

13

-

14

-

15

-

16 (SGND)

Ground

F2

1 (B)

ECU-B Fuse

2 (SEC)

Main Body ECU (Driver Side Junction Block Assembly)

3

-

4

-

5 (SG8)

Combination Meter Assembly

6 (SG3)

Combination Meter Assembly

7

-

8 (SG2)

Combination Meter Assembly*1

9 (SG1)

Combination Meter Assembly

10 (CHK)

ECM

11 (P-AB)

Center Airbag Sensor Assembly

12 (E)

Ground

13 (IG+)

GAUGE NO. 2 Fuse

14 (LP)

Certification ECU (Smart Key ECU Assembly)*2 or Transponder Key ECU Assembly)*3

15

-

16

-

17

-

18 (SG4)

Combination Meter Assembly

19 (SG7)

Combination Meter Assembly

20 (PBEW)

Combination Meter Assembly

21 (SG5)

Combination Meter Assembly

22 (ILL+)

Combination Meter Assembly

23 (PAON)

Center Airbag Sensor Assembly

24

-

  • *1: for AWD
  • *2: w/ Smart Key System
  • *3: w/o Smart Key System
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