Toyota Sequoia (2005). Manual - part 459

I28569

C5–3

C5–28

Combination Meter:

I28570

C6–12

C6–24

C6–23

Combination Meter:

–

DIAGNOSTICS

COMBINATION METER SYSTEM

DI–1631

1825

2

Inspect combination meter (Power source).

PREPARATION:
Disconnect the combination meter connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Terminal No

Condition

Specified condition

C6–12 – Body ground

Always

Below 1 

Ω

CHECK:
Measure the voltage according to the value(s) in the table be-
low.
OK:

Terminal No

Condition

Specified condition

C6–23 – Body ground

Always

10 to 14 V

C5–28 – Body ground

Ignition switch ON

10 to 14 V

C6–24 – Body ground

Ignition switch ON

10 to 14 V

C5–3 – Body ground

Ignition switch ST

10 to 14 V

NG

Repair or replace harness or connector.

OK

Replace combination meter
(See page 

IN–35

).

I28558

C6

12

W–B

Battery

A

W

5

8

BR

IE

Combination Meter

W–L

I18
Ignition SW

2

1

AM1

IG1

B–Y

W

Instrument Panel J/B

AM1

2

1

4

7

6

1

6

9

1C

1C

1D

1E

1L

1F

R–L

R–L

Sub J/B No. 3

3B

3A

5

15

C5

24

C6

10

R–L

Y–R

Y

Y–R

Y

1

3

2

3

19

26

IG4

IG4

IG4

GAUGE

B

V1
Vehicle Speed Sensor
(Combination Meter)

F10
Fusible Link Block

J8
J/C

DI–1632

–

DIAGNOSTICS

COMBINATION METER SYSTEM

1826

Malfunction in speedometer

CIRCUIT DESCRIPTION

The speedometer detects vehicle speed based on a 4–pulse signal from the vehicle speed sensor.

WIRING DIAGRAM

DID8Z–01

–

DIAGNOSTICS

COMBINATION METER SYSTEM

DI–1633

1827

INSPECTION PROCEDURE

HINT:
Start the inspection from step 1 when using the hand–held tester and start from step 3 when not using the
hand–held tester.

1

Perform active test by hand–held tester.

PREPARATION:
(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch ON, and push the hand–held tester main switch ON.

CHECK:
From the display on the tester, perform the ”ACTIVE TEST”.
METER:

Item

Test Details

Diagnostic Note

SPEED METER

0 / 40 (24) / 80 (48) / 120 (72) / 160 (96) / 

200 (120) km/h (mph)

The needle position should be within the accept-

able tolerance.

OK:

Speedometer readings change according to hand–held tester operation.

NG

Replace combination meter
(See page 

IN–35

).

OK

2

Read value of hand–held tester.

PREPARATION:
(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch ON, and push the hand–held tester main switch ON.

CHECK:
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 Speedometer /

Min.: 0 km/h (0 mph)

Max.: 255 km/h (158 mph)

Almost the same as actual vehicle

speed (When driving)

OK:

Vehicle speed displayed on the tester is almost the same as the actual vehicle speed.

OK

Replace combination meter
(See page 

IN–35

).

NG

N02332

1

2

3

DI–1634

–

DIAGNOSTICS

COMBINATION METER SYSTEM

1828

3

Inspect vehicle speed sensor.

PREPARATION:
(a)

Disconnect the vehicle speed sensor connector.

(b)

Connect the positive (+) lead from the battery to terminal
1 and the negative (–) lead to terminal 2.

(c)

Connect the positive (+) lead from the tester to terminal
3 and the negative (–) lead to terminal 2.

(d)

Rotate the shaft.

CHECK:
Check that voltage between terminals 2 and 3 changes from
approx. 0 V to16 V or more.
OK:

Voltage changes from approx. 0 V to 16 V

HINT:
The voltage should change 4 times for every revolution of the
speed sensor shaft.

NG

Replace vehicle speed sensor.

OK