Toyota Sequoia (2005). Manual - part 441

–

DIAGNOSTICS

CRUISE CONTROL SYSTEM

DI–1559

1753

2

Check combination meter assy.

CHECK:
Check if other functions in the combination meter (speedometer, indicator, etc.) operate normally.
OK:

The other functions operate normally.

NG

Go to combination meter system 
(See page 

DI–1610

).

OK

I28461

ECM Wire Harness View:

E5

PI

I27704

C5

Combination Meter
Wire Harness View:

C5–2

DI–1560

–

DIAGNOSTICS

CRUISE CONTROL SYSTEM

1754

3

Check harness and connector (Combination meter assy – ECM).

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

Tester connection 

(Symbol)

Condition

Specified condition

C5–2 – E5–18 (PI)

Always

Below 1 

Ω

C5–2 – Body ground

Always

10 k

Ω

 or higher

NG

Repair or replace harness or connector.

OK

Proceed to next circuit inspection shown in
problem symptoms table 
(See page 

DI–1541

).

I28463

BR

Spiral Cable Sub–assy

CANCEL

–SET

+RES

ON–OFF

1

ECM

4

CCS

E5

IG4

3

CCS

BR

R–Y

Cruise Control Main Switch

4

5

5

A

A

C9

C9

B

B

ECC

2

EB

14

–

DIAGNOSTICS

CRUISE CONTROL SYSTEM

DI–1561

1755

Control Switch Circuit (Cruise Control Switch)

CIRCUIT DESCRIPTION

The cruise control main switch operates seven functions: SET, COAST, TAP–DOWN, RESUME, ACCEL,
TAP–UP, and CANCEL. The SET, TAP–DOWN and COAST functions, and the RESUME, ACCEL and TAP–
UP functions are operated with the same switch. The cruise control main switch is an automatic return type
switch which turns on only while operating it in each arrow direction and turns off after releasing it. The inter-
nal contact point of the cruise control main switch is turned on with the switch operation. Then the ECM reads
the CCS terminal voltage value that has been changed by the switch operation to control SET, COAST, RE-
SUME, ACCEL and CANCEL.

WIRING DIAGRAM

DIDF4–01

I24838

ON–OFF

SET/COAST

RES/ACC

CANCEL

DI–1562

–

DIAGNOSTICS

CRUISE CONTROL SYSTEM

1756

INSPECTION PROCEDURE

HINT:
When using the hand–held tester, start the inspection from step 1 and when not using the hand–held tester,
start from step 2.

1

Read value on hand–held tester.

PREPARATION:
(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch to the ON position.

(c)

According to the display on the tester, read the ”DATA
LIST”.

CCS (ECM):

Item

Measurement Item

/Display (Range)

Normal Condition

Diagnostic Note

MAIN SW (MAIN)

Main SW signal (Main CPU)

/ON or OFF

ON: Main SW ON (Pushed on)

OFF: Main SW OFF (Pushed off)

–

MAIN SW (SUB)

Main SW signal (Sub CPU)

/ON or OFF

ON: Main SW ON (Pushed on)

OFF: Main SW OFF (Pushed off)

–

CANCEL SW

CANCEL SW signal

/ON or OFF

ON: CANCEL SW ON

OFF: CANCEL SW OFF

–

SET/COAST SW

SET/COAST SW signal

/ON or OFF

ON: SET/COAST SW ON

OFF: SET/COAST OFF

–

RES/ACC SW

RES/ACC SW signal

/ON or OFF

ON: RES/ACC SW ON

OFF: RES/ACC SW OFF

–

OK:

When the cruise control main switch is operated, the normal conditions listed above are shown
on the display.

RESULT:

OK

A

NG (All items are defective.)

B

NG (One to four items are defective.)

C

B

Go to step 2.

C

Replace cruise control main switch.

A