Toyota 4Runner manuals

Toyota 4Runner: System Diagram

SYSTEM DIAGRAM





Terminal No. (Symbol)

Wire Harness Side

F14

1 (CANH)

CAN communication line (V Bus)

2 (CANL)

CAN communication line (V Bus)

3 (MSSL)

Steering Pad Switch Assembly

4

-

5

-

6 (LINT)

Drive monitor switch*1

7 (RR)

Clearance warning ECU assembly*2

8 (S)

Engine oil pressure switch assembly

9 (TIRE)

Tire pressure warning ECU

10 (IL2-)

Each part that uses the illumination signal

11 (ILL-)

Each part that uses the illumination signal

12 (RL)

Clearance warning ECU assembly*2

13 (MGND)

Ground

14 (SW)

Brake master cylinder sub-assembly (Brake fluid level warning switch)*7

15 (B)

ECU-B fuse

16

-

17 (IG+)

GAUGE fuse

18 (BK)

Clearance warning ECU assembly*2

19 (E3)

Fuel sender gauge assembly

20 (E1)

Ground

21 (STP+)

Automatic running boards warning light signal*3

22 (STPA)

Ground*3

23 (MSCH)

CAN communication line (MS Bus)*4

24 (MSCL)

CAN communication line (MS Bus)*4

25 (B)

Turn signal flasher assembly

26 (CHG-)

Generator assembly

27 (WLVL)

Level warning switch assembly*5

28 (+S)

Speed signal for other systems (Output)

29 (SI)

Speed signal for other systems (Input)

30 (CHK)

ECM

31 (OP)

Clearance warning ECU assembly*2

32 (FL)

Clearance warning ECU assembly*2

33 (B)

Turn signal flasher assembly

34

-

35 (FR)

Clearance warning ECU assembly*2

36 (TC)

Light control rheostat*6

37 (RHIG)

Light control rheostat*6

38 (TR)

Light control rheostat*6

39 (E2)

Light control rheostat*6

40 (L)

Fuel sender gauge assembly

  • *1: w/ CRAWL Control
  • *2: w/ Intuitive Parking Assist System
  • *3: w/Automatic Running Board System
  • *4: w/ Seat Position Memory
  • *5: w/ Level Warning Switch Assembly
  • *6: w/ Light Control Rheostat
  • *7: for 2WD

1. INPUT AND OUTPUT SIGNALS OF COMBINATION METER ASSEMBLY

(a) Meter or Gauge

Meter or Gauge

Communication Signal

Sender

Communication Line

Receiver

Speedometer

Vehicle speed

Skid control ECU (Brake Actuator Assembly) *3

Master cylinder solenoid (Skid control ECU *4)

CAN

Combination meter assembly

Tachometer

Engine speed

ECM

CAN

Combination meter assembly

Fuel receiver gauge

Fuel level

Fuel sender gauge assembly

CAN

Combination meter assembly

Fuel injection

ECM

CAN

Combination meter assembly

Engine coolant temperature receiver gauge

Engine coolant temperature

ECM

CAN

Combination meter assembly

(b) Warning or Indicator

Warning or Indicator

Communication Signal

Sender

Communication Line

Receiver

Driver and passenger side seat belt warning light

Driver side seat belt buckle switch

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Passenger side seat belt buckle switch

Airbag sensor assembly

CAN

Combination meter assembly

Open door warning light

Each door courtesy switch

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

High beam indicator light

High beam indicator light

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Cruise indicator light

Cruise main indicator

ECM

CAN

Combination meter assembly

Set indicator light

Set indicator

ECM

CAN

Combination meter assembly

Oil pressure warning light

Oil pressure warning

Engine oil pressure switch assembly

Direct line

Combination meter assembly

SRS warning light

SRS warning light

Airbag sensor assembly

CAN

Combination meter assembly

Tire pressure warning light

Tire pressure warning

Tire pressure warning ECU

Direct line

Combination meter assembly

MIL

(Check engine warning light)

MIL

(Check engine warning light)

ECM

Direct line

Combination meter assembly

Charge warning light

Charge warning light

Generator assembly

Direct line

Combination meter assembly

Head indicator light*1

Head indicator light

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Tail indicator light*2

Taillight

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Slip indicator light

Slip indicator

Skid control ECU (Brake Actuator Assembly) *3

Master cylinder solenoid (Skid control ECU *4)

CAN

Combination meter assembly

VSC OFF indicator light

VSC OFF indicator

Skid control ECU (Brake Actuator Assembly) *3

Master cylinder solenoid (Skid control ECU *4)

CAN

Combination meter assembly

AUTO LSD indicator light*3

AUTO LSD indicator

Skid control ECU (Brake Actuator Assembly) *3

Master cylinder solenoid (Skid control ECU *4)

CAN

Combination meter assembly

A-TRAC indicator light*4

4WD indicator

Four wheel drive control ECU

CAN

Combination meter assembly

CRAWL indicator light*5

CRAWL indicator

Skid control ECU (Brake Actuator Assembly) *3

Master cylinder solenoid (Skid control ECU *4)

CAN

Combination meter assembly

Downhill assist control indicator light*6

4WD indicator

Four wheel drive control ECU

CAN

Combination meter assembly

TRAC OFF indicator light

TRAC OFF indicator

Skid control ECU (Brake Actuator Assembly) *3

Master cylinder solenoid (Skid control ECU *4)

CAN

Combination meter assembly

ABS warning light

ABS warning light

Skid control ECU (Brake Actuator Assembly) *3

Master cylinder solenoid (Skid control ECU *4)

CAN

Combination meter assembly

Brake warning light

Brake warning light

Skid control ECU (Brake Actuator Assembly) *3

Master cylinder solenoid (Skid control ECU *4)

CAN

Combination meter assembly

Brake fluid level warning switch

Brake master cylinder sub-assembly (Brake fluid level warning switch)*3

Direct line

Skid control ECU (Brake Actuator Assembly) *3

Master cylinder solenoid (Skid control ECU *4)

CAN

Parking brake switch

Main body ECU (Multiplex network body ECU)

CAN

4WD indicator light*7,*8

4WD indicator

Four wheel drive control ECU

CAN

Combination meter assembly

4LO indicator light*4

4LO indicator

Four wheel drive control ECU

CAN

Combination meter assembly

Center differential lock indicator light*7, *9

4WD indicator

Four wheel drive control ECU

CAN

Combination meter assembly

A/T P indicator light*7

A/T P indicator

Four wheel drive control ECU

CAN

Combination meter assembly

Rear differential lock indicator light*10

4WD indicator

Four wheel drive control ECU

CAN

Combination meter assembly

Front fog indicator light

Front fog indicator

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Fuel level warning light

Fuel level

Fuel sender gauge assembly

Direct line

Combination meter assembly

Turn indicator light

Turn indicator light

Turn signal flasher assembly

Direct line

Combination meter assembly

Eco driving indicator light

Ecology lamp indicator

ECM

CAN

Combination meter assembly

KDSS indicator light*11

KDSS indicator

Stabilizer control ECU

CAN

Combination meter assembly

Smart key indicator light*12

Smart key indicator

Certification ECU (Smart key ECU assembly)

CAN

Combination meter assembly

Multi terrain select indicator light*5

Multi terrain select indicator

Skid control ECU (Brake Actuator Assembly) *3

Master cylinder solenoid (Skid control ECU *4)

CAN

Combination meter assembly

PPS warning light

PPS warning light

Power steering ECU assembly

CAN

Combination meter assembly

Master warning light

warning

Each ECU

CAN

Combination meter assembly

Automatic Running Boards warning light*13

Automatic Running Boards warning

Side Auto Step Controller ECU Assembly

Direct line

Combination meter assembly

Shift position indicator

Shift position

ECM

CAN

Combination meter assembly

  • *1: for U.S.A.
  • *2: except U.S.A.
  • *3: for 2WD
  • *4: for 4WD
  • *5: w/ CRAWL Control
  • *6: w/ Downhill Assist Control System
  • *7: for VF2A Transfer
  • *8: for VF2BM Transfer
  • *9: for VF4BM Transfer
  • *10: w/ Rear Differential Lock
  • *11: w/ Kinetic Dynamic Suspension System
  • *12: w/ Smart Key System
  • *13: w/ Automatic Running Board System

(c) Multi-information Display

Multi-information Display

Communication Signal

Sender

Communication Line

Receiver

ODO/TRIP meter

ODO/TRIP change

ODO/TRIP switch

Direct line

Combination meter assembly

ODO signal

Skid control ECU (Brake Actuator Assembly) *8

Master cylinder solenoid (Skid control ECU *9)

CAN

Eco driving indicator zone display

Eco-zone indicator level

ECM

CAN

Combination meter assembly

Road surface freezing

Outside temperature

Air conditioning amplifier assembly

CAN

Combination meter assembly

Direction*1

Direction

Navigation receiver assembly

CAN

Combination meter assembly

Outside Temperature

Outside temperature

Air conditioning amplifier assembly

CAN

Combination meter assembly

Average fuel consumption

Engine speed

ECM

CAN

Combination meter assembly

Fuel injection

Vehicle speed

Skid control ECU (Brake Actuator Assembly) *8

Master cylinder solenoid (Skid control ECU *9)

CAN

ODO

Current Fuel Consumption

Engine speed

ECM

CAN

Combination meter assembly

Fuel injection

Vehicle speed

Skid control ECU (Brake Actuator Assembly) *8

Master cylinder solenoid (Skid control ECU *9)

CAN

Total driving distance

Cruising Range

Engine speed

ECM

CAN

Combination meter assembly

Fuel injection

Vehicle speed

Skid control ECU (Brake Actuator Assembly) *8

Master cylinder solenoid (Skid control ECU *9)

CAN

Total driving distance

Fuel level

Fuel sender gauge assembly

Direct line

Elapsed Time

Engine speed

ECM

CAN

Combination meter assembly

Steering pad switch assembly

(DISP switch)

Steering pad switch assembly

(DISP switch)

Direct line

Vehicle Speed

Engine speed

ECM

CAN

Combination meter assembly

Vehicle speed

Skid control ECU (Brake Actuator Assembly) *8

Master cylinder solenoid (Skid control ECU *9)

CAN

Steering Angle

Steering angle

Spiral cable sub-assembly

(Steering angle sensor)

CAN

-

Setting

Customized setting

-

-

Combination meter assembly

Open door message

Each door courtesy switch

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Clearance sonar system message*2

Clearance sonar system message

Clearance warning ECU assembly

Direct line

Combination meter assembly

Smart Key system message*3

Smart Key system message

Certification ECU (Smart key ECU assembly)

CAN

Combination meter assembly

Release parking brake message

Parking brake switch

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Vehicle speed

Skid control ECU (Brake Actuator Assembly) *8

Master cylinder solenoid (Skid control ECU *9)

CAN

A/T fluid temperature high message

A/T fluid temperature high message

ECM

CAN

Combination meter assembly

Sliding roof message*4

Sliding roof message

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Washer level message*5

Washer level message

Level warning switch assembly

Direct line

Combination meter assembly

Maintenance required message*6

Oil maintenance required message

Combination meter assembly

-

Combination meter assembly

Smart door unlock mode setting display*3

Smart door unlock mode setting

Certification ECU (Smart key ECU assembly)

CAN

Combination meter assembly

Multi-information display change

Multi-information display change

Steering pad switch assembly

(DISP switch)

Direct line

Combination meter assembly

Multi terrain select display*7

Multi terrain select

Drive monitor switch

LIN

Combination meter assembly

  • *1: for Navigation Receiver Type
  • *2: w/ Intuitive Parking Assist System
  • *3: w/ Smart Key System
  • *4: w/ Sliding Roof System
  • *5: w/ Level Warning Switch Assembly
  • *6: for U.S.A.
  • *7: w/ CRAWL Control
  • *8: for 2WD
  • *9: for 4WD

(d) Buzzer

Buzzer

Communication Signal

Sender

Communication Line

Receiver

Key reminder buzzer*1

Driver side door courtesy switch

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Ignition switch

Shift down reject buzzer

Shift down reject buzzer

ECM

CAN

Combination meter assembly

Seat belt warning buzzer

Driver side seat belt buckle switch

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Front passenger side door courtesy switch

Driver side door courtesy switch

Parking brake switch

Front passenger side seat belt buckle switch

Airbag sensor assembly

CAN

Shift position R

ECM

CAN

Shift position P

Vehicle speed

Skid control ECU (Brake Actuator Assembly) *7

Master cylinder solenoid (Skid control ECU *8)

CAN

Driving with any door opened warning buzzer

Vehicle speed

Skid control ECU (Brake Actuator Assembly) *7

Master cylinder solenoid (Skid control ECU *8)

CAN

Combination meter assembly

Each door courtesy switch

Main body ECU (Multiplex network body ECU)

Smart key warning buzzer*2

Ignition switch

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Engine immobiliser certification buzzer

Certification complete

Certification ECU (Smart key ECU assembly)

CAN

Combination meter assembly

Driving with parking brake unreleased warning buzzer

Parking brake switch

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

Vehicle speed

Skid control ECU (Brake Actuator Assembly) *7

Master cylinder solenoid (Skid control ECU *8)

CAN

Sliding roof open warning*3

Sliding roof open warning buzzer request

Main body ECU (Multiplex network body ECU)

CAN

Combination meter assembly

4WD buzzer*4

4WD buzzer request

Four wheel drive control ECU

CAN

Combination meter assembly

Downhill assist control buzzer*5

Meter buzzer request

Skid control ECU (Brake Actuator Assembly) *7

Master cylinder solenoid (Skid control ECU *8)

CAN

Combination meter assembly

Hill-start assist control buzzer

Meter buzzer request

Skid control ECU (Brake Actuator Assembly) *7

Master cylinder solenoid (Skid control ECU *8)

CAN

Combination meter assembly

Master warning buzzer

Each system warning

Skid control ECU (Brake Actuator Assembly) *7

Master cylinder solenoid (Skid control ECU *8)

CAN

Combination meter assembly

Main body ECU (Multiplex network body ECU)

ECM

Certification ECU (Smart key ECU assembly)*2

Drive monitor switch*6

LIN

  • *1: w/o Smart Key System
  • *2: w/ Smart Key System
  • *3: w/ Sliding Roof System
  • *4: for 4WD
  • *5: w/ Downhill Assist Control System
  • *6: w/ CRAWL Control
  • *7: for 2WD
  • *8: for 4WD

(e) Others

Signal

Communication Signal

Sender

Communication Line

Receiver

Vehicle speed signal

Vehicle speed

Skid control ECU (Brake Actuator Assembly) *7

Master cylinder solenoid (Skid control ECU *8)

Direct Line

Combination meter assembly

Vehicle speed

Combination meter assembly

Direct Line

ECM

Tire pressure warning ECU

Clearance warning ECU assembly*1

Navigation receiver assembly*2

Radio and display receiver assembly*3

Voltage inverter assembly*4

Power management control ECU*4

Telematics transceiver*5

Stereo Component Amplifier Assembly*6

  • *1: w/ Intuitive Parking Assist System
  • *2: for Navigation Receiver Type
  • *3: for Radio and Display Type
  • *4: w/ Smart Key System
  • *5: w/ Safety Connect System
  • *6: for 9 Speakers Type
  • *7: for 2WD
  • *8: for 4WD
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use these procedures to troubleshoot the meter/gauge system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP ...

Customize Parameters
CUSTOMIZE PARAMETERS 1. METER/GAUGE SYSTEM (a) Combination Meter NOTICE: Record the current settings before customizing. When the customer requests a change in a function, first make s ...

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