Toyota Sequoia (2005). Manual - part 126

A23548

ECM

E4

STAR

ACCR

AM2

8

ED

I18
Ignition SW

B

B

B–W

1C

9

6

20

4

2

P

1

B–W

B

1

J2
J/C

1

17

B–O

2D

ALT

E7

J38

1F

GR

W

4

ED2

IA1

S3

F10
Fusible
Link Block

4

W–R

B–L

Battery

5

B

ST

3A

1

Starter

ST Relay

5

B

1

2

3

Instrument Panel J/B

12

Engine Room J/B

2C

5

Sub J/B No. 4

P

3A

12

A36
ACC CUT Relay

to Audio

J37

J/C

C

GR

4

GR

N

B–R

B–R

J/C

B

D

J51

J52

B–R

STSW

E6

IG4

B

Engine Room R/B No.2

2

B

2

2

2

2

2

B–R

B–R

RAD No.2

1C

1C

1C

1J

1J

1J

1L

1E

3

5

W–L

W–R

W–R

2C

2E

1

3

B–R

3

B

1

B–W

W–B

6

A

1

2

3

5

8

3

J5
J/C

1

1

W–B

12

8

B–R

W–R

J51

B

E6

11

STA

W–R

2

1

3

S2

W–R

4A

4B

19

9

Sub J/B No.4

GR

P1
Park/Neutral
Position SW

AM1 ACC

AM2 ST2

ECU–B

SHORT PIN

B

7

B

2

AM1

1

STA

8

IA5

–

DIAGNOSTICS

ENGINE

DI–299

493

WIRING DIAGRAM

DI–300

–

DIAGNOSTICS

ENGINE

494

INSPECTION PROCEDURE

HINT:
Read freeze frame data using the hand–held tester. Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air–fuel ratio was lean or rich, as well as other
data from the time when a malfunction occurred.

1

Connect hand–held tester, and check STA signal.

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.

(c)

When using hand–held tester, enter the following menu: DIAGNOSIS / ENHANCED OBD II / DATA
LIST / ALL / STARTER SIG.

CHECK:
Read the STA signal on the hand–held tester while the starter operates.
OK:

Standard:

Ignition Switch Position

ON

START

STARTER SIG

OFF

ON

OK

Go to step 5.

NG

2

Check park/neutral position switch (See page 

DI–576

).

NG

Replace park/neutral position switch.
Go to next step 5 after the replacement.

OK

3

Check ignition switch (See page 

BE–24

).

NG

Replace ignition switch.
Go the next step 5 after the replacement.

OK

–

DIAGNOSTICS

ENGINE

DI–301

495

4

Connect hand–held tester, and check STA signal.

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.

(c)

On the hand–held tester, enter the following menu: DIAGNOSIS / ENHANCED OBD II / DATA LIST
/ ALL / STARTER SIG.

CHECK:
Read the STA signal on the hand–held tester while the starter operates.
OK:

Standard:

Ignition Switch Position

ON

START

STARTER SIG

OFF

ON

NG

Repair or replace harness or connector.

OK

5

Check DTC reoccur

PREPARATION:
(a)

Connect the hand–held tester.

(b)

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

(c)

Clear DTC (See page 

DI–43

).

(d)

Drive the vehicle more than 40 km/h (25 mph) for 20 seconds or more.

CHECK:
Check DTC reoccur.
RESULT:

Display (DTC Output)

Proceed to

P0617

A

No DTC output

B

A

Replace ECM (See page 

SF–80

).

B

Check for intermittent problems
(See page 

DI–11

).

DI–302

–

DIAGNOSTICS

ENGINE

496

DTC

P0630

VIN not Programmed or Mismatch ECM/PCM

CIRCUIT DESCRIPTION

DTC P0630 is set when the Vehicle Identification Number (VIN) is not stored in the Engine Control Module
(ECM) or the input VIN is not accurate. Input the VIN with the hand–held tester.

DTC No.

DTC Detecting Condition

Trouble Area

P0630

VIN is not stored in ECM.

Input VIN in ECM is not accurate.

ECM

MONITOR STRATEGY

Related DTCs

P0630

VIN not programmed

R

i d

/

t

Main sensors/components

ECM

Required sensors/components

Related sensors/components

–

Frequency of operation

Continuous

Duration

0.5 sec.

MIL operation

Immediate

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

It

Specification

Item

Minimum

Maximum

The monitor will run whenever this DTC is

not present

See page 

DI–18

Battery voltage

8 V

–

Ignition switch

ON

Starter

OFF

TYPICAL MALFUNCTION THRESHOLDS

Detection Criteria

Threshold

VIN code

Not programmed

COMPONENT OPERATING RANGE

Parameter

Standard Value

VIN code

Programmed

DID8E–01