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 ...
Other materials about Toyota 4Runner:
System Description
SYSTEM DESCRIPTION
1. KEY REMINDER WARNING SYSTEM DESCRIPTION
(a) When the driver side door is opened while the ignition switch is ACC or off
and the key is in the ignition key cylinder, this system causes a buzzer to sound
in order to warn the driver th ...
Speaker Circuit
DESCRIPTION
If there is a short in a speaker circuit, the stereo component amplifier
assembly detects it and stops output to the speakers.
Thus sound cannot be heard from the speakers even if there is no malfunction
in the stereo component ...
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