Toyota Sequoia (2005). Manual - part 457

I27707

C6–21

C6–8

(*4) C5–15

C5–18

C5–2

C5–14

C5–19

C5–13

C6–1

C6–2

C6–3

C5–20

ABS

CHARGE

A/T OIL TEMP

CHECK E/G

4LO

O/D OFF

A/T L

WASHER

SLIP

VSC OFF

VSC TRAC

4HI

CRUISE

ONE STEP
DIMMER

C6–24

C6–5

C6–6

C6–4

C5–40

TIRE PRS

CTR DIFF LOCK

RSCA OFF

SECURITY

P

R

N

C5–16

C5–17

C5–34

C5–35

C5–36

C5–37

C5–38

C5–39

C6–17 (*5)

C6–18 (*6)

C5–33

C6–19

TURN (L)

TURN (R)

BEAM

3

2

D

*4: 4WD *5: w/o Daytime Running Light *6: w/ Daytime Running Light

ONE STEP
DIMMER

RSCA OFF

–

DIAGNOSTICS

COMBINATION METER SYSTEM

DI–1623

1817

Wire harness side

1

2

3

4

5

6

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

1

2

3

4

5

8

6

10

11

12

13

14

15

16

17

18

19

21

23

24

Terminal No.

Translate ECU

ECM

STA Fuse

Front Seat Inner Belt LH (Buckle Switch)

Overhead Module (Garage Door Opener)

Overhead Module (Garage Door Opener)

Washer Level Sensor

ECM

ECM (*1)

Transponder Key Computer

Body ECU

ECM

ECM

Tire Pressure Monitor ECU

Injector No. 1

Light Control Rheostat

ECM

Speed Sensor

4P OUT (Other Parts)

Fuel Sender Gauge

Oil Pressure Sender Gauge

IGN Fuse

Airbag Sensor Assembly

Memory Seat ECU and SW (*2)

Back Door ECU

Integration Control and Panel

Turn Signal Flasher Relay

Park/Neutral Position Switch

Airbag Sensor Assembly

Translate ECU

Translate ECU

Skid Control ECU

4WD Control ECU

Alternator

Speed Sensor

Fuel Sender Gauge

Ground

Suspension Control ECU

Body ECU (*4)

Body ECU (*3)

Turn Signal Flasher Relay

Skid Control ECU

ECU–B Fuse

IGN1 Fuse

Connectors:

Terminal No.

Wire harness side

C5

C6

4WD Control ECU

4WD Control ECU

Suspension Control ECU

Suspension Control ECU

Suspension Control ECU

*1: 4WD
*2: w/ Driving Position Memory
*3: w/ Daytime Running Light
*4: w/o Daytime Running Light

Park/Neutral Position Switch

Park/Neutral Position Switch

Park/Neutral Position Switch

Park/Neutral Position Switch

Park/Neutral Position Switch

DI–1624

–

DIAGNOSTICS

COMBINATION METER SYSTEM

1818

DID8W–01

C00083

DLC3

–

DIAGNOSTICS

COMBINATION METER SYSTEM

DI–1625

1819

DIAGNOSIS SYSTEM

INSPECT THE DLC3
The vehicle’s combination meter ECU uses ISO 9141–2 for
communication. The terminal arrangement of the DLC3 com-
plies with SAE J1962 and matches the ISO 9141–2 format.

Tester connection

Condition

Specified condition

7 (Bus 

 Line) – 5 (Signal ground)

During communication

Pulse generation

4 (Chassis Ground) – Body

Always

Below 1 

Ω

5 (Signal Ground) – Body

Always

Below 1 

Ω

16 (B+) – Body

Always

10 to 14 V

HINT:
If the display shows UNABLE TO CONNECT TO VEHICLE
when you have connected the cable of the hand–held tester to
the DLC3, turned the ignition switch to the ON position and op-
erated the tester, there is a problem either on the vehicle side
or tester side.

If communication is normal when the tool is connected to
another vehicle, inspect the DLC3 on the original vehicle.

If communication is still impossible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool’s instruction manual.

DID8X–01

DI–1626

–

DIAGNOSTICS

COMBINATION METER SYSTEM

1820

DATA LIST / ACTIVE TEST

DATA LIST
According to the DATA LIST displayed by the hand–held tester, you can read the values of the switches,
sensors, actuators and so on without part removal. Reading the DATA LIST as the first step of troubleshoot-
ing is one method to shorten labor time.
(a)

Warm up the engine.

(b)

Turn the ignition switch off.

(c)

Connect the hand–held tester to the DLC3.

(d)

Turn the ignition switch to the ON position.

(e)

Operate the hand–held tester according to the steps on the display and select ”DATA LIST”.

METER:

Item

Measurement Item /

Range (Display)

Normal Condition

Diagnostic Note

SPEED METER

Vehicle Speed Meter /

Min.: 0 km/h (0 mph)

Max.: 255 km/h (158 mph)

Almost the same as actual vehicle

speed (When driving)

TACHO METER

Engine RPM /

Min.: 0 rpm Max.: 12,750 rpm

Almost the same as actual engine

speed (When engine is running)

FUEL GAUGE

Fuel Input /

Min.: 0 Max.: 255

Tester indication changes accord-

ing to the fuel receiver gauge

angle.

LIGHT RHEOSTAT

Light Control Rheostat /

Min.: 0 Max.: 255

Light control rheostat switch is

Dark (0) 

→

 Bright (255)

OIL GAUGE

Oil Gauge /

Min.: 0 Max.: 255

Tester indication changes accord-

ing to the oil pressure receiver

gauge angle.

ODO/TRIP SW

ODO / TRIP 

ODO/TRIP switch / ON/OFF

ON: Switch is pushed

OFF: Switch is released