Toyota land cruiser 1998 2007 diagnostics hệ thống chuẩn đoán lỗi trên land cruiser đời 1998 2007

HỆ THỐNG CHUẨN ĐOÁN LỖI TRÊN XE LAND CRUISER ĐỜI 1998-2007

Trang 1

WT

A43

A43IX1

F15

Cowl Side J/B RH

Cowl Side J/B RHCowl Side J/B RH

Cowl Side J/B LH

I18Ignition SW

Engine Room J/B

Combination Meter

ABS & BA & TRAC

& VSC ECUSB

D4 Detection SW (Center Diff Lock)

8 IX1

VSC OFF

17C13

C12

C151

10

3

714

26

AM2

BRAKE ASSIST (BA) SYSTEM

DTC Always ON Malfunction in ECU

VSC TRAC Warning Light Circuit

CIRCUIT DESCRIPTION

Always ON There is a malfunction in the ECU internal circuit.

Power source circuit

Skid control ECU

VSC TRAC warning light circuit

HINT:

If the fail safe function is activated in the VSC system, ”VSC OFF” indicator light lights up

WIRING DIAGRAM

DICA4-01

Trang 2

-DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) &

DI-625

INSPECTION PROCEDURE

NO Connect the connector to the ECU.

YES

Check the DTC on page DI-505

YES Repair circuit indicated by the output code.

NO

YES Check for open or short circuit in harness and

connector between ECU-IG fuse and ECU (See page IN-36 ).

Trang 3

In case of using the 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

(c) Select the ACTIVE TEST mode on the hand-held tester

(a) Turn the ignition switch OFF

(b) Disconnect the connector from the skid control ECU

(c) Turn the ignition switch ON

CHECK:

Check that the VSC TRAC warning light goes off

Trang 4

Cowl Side J/B RH

WA

1A42

43A

53Q

12C12

412E

10

1CAM2

2F15

Battery

110

MAINABS

Trang 5

HINT:

Troubleshoot in accordance with the table below for each trouble symptom

*1: Start the inspection from step 1 in case of using the hand-held tester and start from step 2 in case of notusing the hand-held tester

*2: After inspection with step 4, start the inspection from step 5 in case of using the hand-held tester andstart from step 6 in case of not using hand-held tester

PREPARATION:

YES Repair ABS warning light bulb or combination

meter assembly.

NO

Trang 6

1

2

34(+)(-)Continuity

12

34

1

2

34

Open

Continuity

Check continuity between the IG1 No 1 relay terminals listed

in the table below

Terminals 1 and 2 Continuity

NG Replace IG1 No 1 relay.

OK

Check for open circuit in harness and connector between IG1 No 1 relay and combination meter (See page IN-36 ).

Trang 7

YES

OK Check and replace skid control ECU.

NG

Trang 8

F17750 F18532

ABS & BA & TRAC

& VSC ECUCowl Side J/B RH

43Q

5SB

C1212

ABS

10C12

2B13

A416A4131A428A4217A426

3B22

MET

IGN

3E

4B-R

A

J4J/C

L-B2E

37

2B18

2E39

ECU-IG12

35

1IG1 No.2 Relay

2C1

B-G

F161

B-G

F152

1B9

W-R

W-B

Either of the following 1 or 2 is detected:

1 The ECU connectors are disconnected from the ECU.

2 There is a malfunction in the ECU internal circuit.

Battery

IC regulator

Power source circuit

Skid control ECU

HINT:

The hand-held tester may not be used when the ECU is abnormal

WIRING DIAGRAM

DICA3-01

Trang 9

YES

YES Repair circuit indicated by the output code

NO

YES Check for open or short circuit in harness and

connector between ECU-IG fuse and ECU (See page IN-36 ).

Trang 10

DI-623

In case of using the hand-held tester:

PREPARATION:

(a) Turn the ignition switch OFF

(b) Disconnect the connector from the skid control ECU

(c) Using a service wire, connect terminal WA of the skid control ECU harness side connector and bodyground

(d) Turn the ignition switch ON

CHECK:

Check that the ABS warning goes off

page BE-2 ).

NG

and skid control ECU, combination meter and DLC1 (See page

Trang 11

ABS & BA & TRAC

& VSC ECU

V8VSC Warmning BuzzerCowl Side J/B LH

ECU-IG1

BZA42

2L

Brake Warning and VSC Buzzer Circuit

CHECK:

Check that brake warning and VSC buzzer sounds ”ON” and ”OFF” with the hand-held tester

OK Check and replace skid control ECU.

DICAB-01

Trang 12

1

2

DI-650 DIAGNOSTICS - ABS & VEHICLE STABILITY CONTROL (VSC) &

OK

NG Repair or replace harness or connector.

OK

Check and replace skid control ECU.

Trang 13

Cowl Side J/B RH

I18Ignition SW

P8Parking Brake SWBattery

Brake

BRLA43

5Y-G3A

113Q

6SB

3E4MET

3Q

7SB

C1419

C1210

C151

C1420

2B20

IX1

AA

A4213

2Q

36A40

LBL

2Y-G

2A10

1B9

EC

6IG2

J4J/C

B-RCombination Meter

ABS & BA & TRAC

& VSC ECU

BRAKE Warning Light Circuit

The BRAKE warning light lights up while the brake fluid is insufficient and EBD is abnormal

WIRING DIAGRAM

DICA7-02

Trang 14

NG Repair or replace parking brake switch circuit.

OK

switch circuit.

OK

NO

Trang 15

1

2

34(+)(-)Continuity

12

34

1

2

34

Open

Continuity

PREPARATION:

Remove the IG1 No 1 relay from the engine room J/B

CHECK:

Check continuity between the IG1 No 1 relay terminals listed

in the table below

Terminals 1 and 2 Continuity

NG Replace IG1 No 1 relay.

OK

Check for open circuit in harness and connector between IG1 No 1 relay and combination meter (See page IN-36 ).

YES

Trang 16

Check if that the open circuit in the combination meter circuit (See page BE-58)

NG Repair brake warning light bulb or combination

Trang 17

This solenoid goes on when signals are received from the ECU and controls the pressure acting on the wheelcylinders thus controlling the braking force

C0226 / 21 Open or short in SFRH or SFRR circuit continues for 0.015

sec or more.

Hydraulic brake booster

SFRH or SFRR circuit C0236 / 22 Open or short in SFLH or SFLR circuit continues for 0.015

sec or more.

SFLH or SFLR circuit C0246 / 23 Open or short in SRRH or SRRR circuit continues for 0.015

sec or more.

SRRH or SRRR circuit C0256 / 24 Open or short in SRLH or SRLR circuit continues for 0.015

sec or more.

SRLH or SRLR circuit

DIC95-01

Trang 18

ABS & BA & TRAC

A4416A39

11

SR

R1+

DI-529

WIRING DIAGRAM

Trang 19

Check continuity between terminals A43 - 4 and A45 - 1, 2, 3,

4, 7, 8, 9 and 10 of the hydraulic brake booster connector

OK

If the same code is still output after the DTC is deleted, check the contact condition of each nection If the connections are normal, the ECU may be defective.

Trang 20

DI-531

This relay supplies power to each ABS solenoid After the ignition switch is turned ON, if the initial check is

OK, the relay goes on

C0278 / 11

Conditions 1 and 2 continue for 0.2 sec or more:

1 ECU terminal IG1 voltage is 9.5 V to 17.0 V and the solenoid relay is ON, however, the contact point of the solenoid relay is OFF.

2 With solenoid relay ON, ECU terminal IG1 voltage comes 9.5 V or less and the contact point of the solenoid relay does not become ON.

be- ABS solenoid relay

ABS solenoid relay circuit

C0279 / 12

Immediately after ECU terminal IG1 becomes ON, and solenoid relay is OFF, however, when the condition that the solenoid relay due to the contact point is ON continues for 0.2 sec or more.

Trang 21

(-)(+)1

2

Engine Room J/B

F00042

134

6Open

(+)(-)

123

4

56

123

2

56

CHECK:

(a) Apply battery positive voltage between terminals 4 and 6.(b) Check continuity between each terminal of the ABS sole-noid relay

Trang 22

DI-533

skid control ECU.

hy-draulic brake booster.

OK

Trang 23

con-BRAKE ASSIST (BA) SYSTEM

OK

Replace hydraulic brake booster or skid

con-trol ECU.

Trang 24

DI-535

DTC C1201 / 51 Engine Control System Malfunction

If trouble occurs in the engine control system, the ECU prohibits TRAC and VSC control

C1201 / 51

Conditions 1 and 2 continue for 5 sec.:

1 Engine speed: 500 rpm or more.

2 A trouble signal in the engine control system is input.

Engine control system

* 1 Repair engine control system according to the

Trang 25

ENG+

ENG-TRC+

TRC-24

2214

DTC C1203 / 53 ECM Communication Circuit

Either of the following 1 or 2 continues for 5 sec.:

1 ECU IG1 terminal voltage is 9.5 V to 17.0 V and data transmission to the ECM is impossible.

2 ECU IG1 terminal voltage is 9.5 V to 17.0 V, engine speed is 500 rpm or more or vehicle speed is 60 km/h (36 mph) or more and data receiving from the ECM is impossible.

Trang 26

DI-537

(REFERENCE) INSPECTION USING OSCILLOSCOPE PREPARATION:

(a) Remove the skid control ECU

(b) Connect the oscilloscope to each of terminal ENG+ orTRC+ and GND of the skid control ECU

CHECK:

Start the engine, and check the signal waveform

NG Check and replace skid control ECU.

OK

ter-minals ENG+, ENG-, TRC+, TRC- of skid control ECU and ECM (See page

Trang 27

ABS & BA & TRAC

& VSC ECUYaw Rate Sensor

22G

DTC C1210 / 36 Zero Point Calibration of Yaw Rate

Sensor Undone

C1210 / 36

When either of the following 1 or 2 is detected:

1 After battery terminal was connected, when the shift lever was moved to other than P position within 15 sec.

soon after ECU terminal IG1 becomes ON for the first time.

2 When the yaw rate sensor zero point recorded in ECU is deleted.

Yaw rate sensor

Yaw rate sensor circuit

PNP switch circuit (P position)

WIRING DIAGRAM

DIC9C-01

Trang 28

OK

Check and replace skid control ECU.

Trang 29

DTC C1223 / 43 ABS Control System Malfunction

C1223 / 43 ABS control system is abnormal ABS control system

* 1 Repair ABS control system according to the

Trang 30

ABS & BA & TRAC

& VSC ECUECM

J/B No.5

NEOA42

7W

5D125

5C

NEO17

DI-541

DTC C1224 / 44 NE Signal Circuit

The skid control ECU receives engine revolution speed signals (NE signals) from the ECM

C1224 / 44

When either of the following 1 or 2 is detected:

1 At vehicle speed of 19 mph (30 km/h) or more, and when data received from the ECM is in normal condition, and open or short circuit for engine revolution signal circuit continues for 10 sec or more.

2 While TRAC is operating, the conditions that open or short circuit in engine revolution signal circuit is detected, main throttle opening degree is 0 and IDL switch

is OFF continue for 0.24 sec or more.

NEO of skid control ECU and terminal NEO of ECM (See page

IN-36 ).

NG Repair or replace harness and connector.

OK

DIC9G-01

Trang 31

PREPARATION:

Remove the skid control ECU with connectors still connected

CHECK:

(a) Turn the ignition switch ON

(b) Measure voltage between terminal NEO of the skid trol ECU and body ground for the engine conditions be-low

con-OK:

Engine condition Voltage OFF (IG ON) 10 to 14 V or below 1 V

ON (Idling) 10 to 14 V ↔ below 1 V (Pulse)

NG Check and replace skid control ECU or ECM.

OK

If the same codes are still output after the DTC is deleted, check the contact condition of each connection.

Trang 32

DI-543

The TRAC & VSC solenoid operates in accordance with signals from the ECU and raises the fluid pressure

in and releases it from the brake cylinders

C1225 / 25 Open or short in SA1 circuit continues for 0.015 sec or

more.

SA1 circuit C1226 / 26 Open or short in SA2 circuit continues for 0.015 sec or

more.

SA2 circuit C1227 / 27 Open or short in SA3 circuit continues for 0.015 sec or

more.

SA3 circuit C1228 / 28 Open or short in STR circuit continues for 0.015 sec or

more.

STR circuit

DIC9H-02

Trang 33

5G-Y

G-W

B

G

A396

5A3911A3912A39

A374

11

1C

F15MAIN

B-G

B-RPG-Y

2

2B-G

WIRING DIAGRAM

Trang 34

LOCK

4

56

1112

A43

A45

OK

Trang 35

con-BRAKE ASSIST (BA) SYSTEM

C1231 / 31

Detection of any of the conditions 1 through 3.:

1 When the condition that ECU terminal IG1 voltage is 9.5

V or more, and does not receive data from steering angle sensor continues for 1 sec or more.

2 When the steering angle sensor value changes by 360 °

or more with SSC signal from steering angle sensor remaining ON or OFF.

3 When the condition that difference between the steering angle value at edge occurring in SSC signal and the value at edge occurring in SSC signal after turning the steering wheel one-turn is out of the range from 355.5 °

- 364.5 ° occurs 10 times or more.

Steering angle sensor

Steering angle sensor circuit

C1335 / 35

When the ECU IG1 terminal voltage is 9.5 V or more, data transmission from the steering angle sensor is impossible for 1 sec or more.

Steering angle sensor

Steering angle sensor circuit

DIC9J-02

Trang 36

IG116

16

372E

23

Cowl Side J/B LH

IG1 No.2 Relay

I18Ignition SWSB

J/B No.2

DI-547

WIRING DIAGRAM

Trang 37

(a) Connect the hand-held tester to the DLC3.

(c) Select the DATALIST mode on the hand-held tester

(a) Turn the ignition switch ON

(b) Measure voltage between terminals 1 and 2, 2 and 9 ofthe combination switch wire harness side connector

OK:

Voltage: 10 to 14 V

NG Check and replace harness and connector.

OK

Trang 38

12

(b) Disconnect the combination switch connector (for ing angle sensor)

steer-(c) Connect the oscilloscope to terminals 3 and 6 of the bination switch connector (for steering angle sensor).(d) Apply battery positive voltage between terminals 1 and 2

regu-NG Replace steering angle sensor.

OK

NG Repair or replace steering sensor disc.

OK

Trang 39

position sensor and ABS & BA & TRAC & VSC ECU (See page IN-36 ).

OK

Check and replace ABS & BA & TRAC & VSC

ECU.

Trang 40

Detection of either of the conditions 1 or 2.:

1 At a vehicle speed of 6 mph (10 km/h) or more, when the condition that ECU terminal GL1 signal change range is less than 20 mV, and ECU terminal GL2 signal change range swings by 468 mV or more occurs for 30 sec or more.

2 At a vehicle speed of 6 mph (10 km/h) or more, when the condition that ECU terminal GL2 signal change range is less than 20 mV, and ECU terminal GL1 signal change range swings by 468 mV or more occurs for 30 sec or more.

(c) Select the DATALIST mode on the hand-held tester

CHECK:

Check that the deceleration value of the deceleration sensor displayed on the hand-held tester is changingwhen tilting the vehicle

OK:

Deceleration value must be changing.

OK Check and replace ABS & BA & TRAC & VSC

ECU.

NG

DIC9K-02

Tiêu đề	Toyota Land Cruiser 1998 2007 Diagnostics – Hệ Thống Chuẩn Đoán Lỗi Trên Land Cruiser Đời 1998 2007
Trường học	Toyota University
Chuyên ngành	Automotive Diagnostics
Thể loại	Chuyên đề
Năm xuất bản	2004
Thành phố	Toyota City

Định dạng
Số trang	1.017
Dung lượng	9,1 MB