Toyota Sequoia (2005). Manual - part 440

I28460

Wire Harness View:

E4

STP

ST1–

–

DIAGNOSTICS

CRUISE CONTROL SYSTEM

DI–1555

1749

4

Check harness and connector (Stop light switch – battery).

CHECK:
Measure the voltage according to the value(s) in the table below.
OK:

Tester connection

Condition

Specified condition

S14–4 – Body ground

Always

10 to 14 V

S14–2 – Body ground

Ignition SW ON

10 to 14 V

NG

Repair or replace harness or connector.

OK

5

Check voltage between terminals STP and ST1– of ECM connector and body
ground.

PREPARATION:
(a)

Reconnect the stop light switch connector.

(b)

Disconnect the ECM connector.

(c)

Turn the ignition switch to the ON position.

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

Tester connection 

(Symbol)

Condition

Specified condition

E4–15 (STP) – 

Body ground

Brake pedal depressed

10 to 14 V

E4–15 (STP) – 

Body ground

Brake pedal released

Below 1 V

E4–16 (ST1–) – 

Body ground

Brake pedal depressed

Below 1 V

E4–16 (ST1–) – 

Body ground

Brake pedal released

10 to 14 V

NG

Repair or replace harness or connector.

OK

Replace ECM (See page 

IN–35

).

DI–1556

–

DIAGNOSTICS

CRUISE CONTROL SYSTEM

1750

DTC

P0607/54 Input signal circuit malfunction

CIRCUIT DESCRIPTION

This DTC indicates the internal abnormalities of the ECM.

DTC No.

Detection Item

Trouble Area

P0607/54

The ECM has a supervisory CPU and a control ECU inside.
When each input STP signal is different for 0.15 sec. or more,
this trouble code is output.
This trouble code is output after 0.4 sec. has passed from the
time the cruise cancel input signal (STP input) is input into the
ECM.

ECM

HINT:
The ECM receives signals from each sensor to control all the functions of the cruise control with the micro-
computer.
When a trouble code is detected, fail safe remains on until the ignition switch is turned off.

INSPECTION PROCEDURE

Replace ECM (See page

 

IN–35

).

DIAB7–04

I28462

Combination Meter

Instrument Panel J/B

I18
Ignition SW

Engine Room J/B

PI

ECM

B–O

LG–R

Cruise

W–R

Battery

IG2

B–R

24

3

2

1H

1C

AM2

6

2

1

IGN1

1

C6

7

C5

E5

18

1C

1J

2C

2D

W–R

5

AM2

B

11

B

5

4

F10 
FLB

–

DIAGNOSTICS

CRUISE CONTROL SYSTEM

DI–1557

1751

CRUISE main indicator light circuit

CIRCUIT DESCRIPTION

The CRUISE main indicator light comes on while the cruise control system is in operation and blinks when
there are any problems with the system.
DTCs can be read by counting the number of times the CRUISE main indicator light blinks.

WIRING DIAGRAM

DIDF3–01

DI–1558

–

DIAGNOSTICS

CRUISE CONTROL SYSTEM

1752

INSPECTION PROCEDURE

HINT:
When using the hand–held tester, start the inspection from 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 and turn the hand–held tester main switch on.

(c)

Select the item below in the ”DATA LIST”, and read the display on the hand–held tester.

CHECK:
Check that the CRUISE main indicator light comes on when the cruise main switch is ON, and goes off when
the cruise main switch is OFF.
CCS (ECM):

Item

Measurement Item

/Display (Range)

Normal Condition

Diagnostic Note

CCS INDICATOR

Cruise indicator signal (Main CPU)

/ON or OFF

ON: ”CRUISE main indicator” ON

OFF: ”CRUISE main indicator”

OFF

–

CCS INDICATOR S

Cruise indicator signal (Sub CPU)

/ON or OFF

ON: ”CRUISE main indicator” ON

OFF: ”CRUISE main indicator”

OFF

–

OK:

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

NG

Go to step 2.

OK

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

DI–1541

).