1998 TOYOTA LAND CRUISER steering
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- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-703
896 Author: Date:
2004 LAND CRUISER (RM1071U)B1149/37
(DI-828)
Front airbag sensor LH malfunctionFront airbag sensor LH
Airbag sensor assembly
Dash wire
Engine room No. 2 wire
Engine room main wire
ON
B1153/25
(DI-836)
Seat position sensor malfunctionSeat position sensor assembly
Airbag sensor assembly
Floor No. 1 wire
Front seat wire LH
ON
B1154/38
(*1)
(DI-844)Curtain shield airbag sensor assembly
RH malfunctionCurtain shield airbag sensor assembly RH
Airbag sensor assembly
Floor No. 2 wire
Blink
B1155/39
(*1)
(DI-850)Curtain shield airbag sensor assembly
LH malfunctionCurtain shield airbag sensor assembly LH
Airbag sensor assembly
Floor No. 1 wire
Blink
B1160/83
(*1)
(DI-856)Short in curtain shield squib RH circuitCurtain shield airbag assembly RH (squib)
Airbag sensor assembly
Floor No. 2 wire
Blink
B1161/84
(*1)
(DI-860)Open in curtain shield squib RH circuitCurtain shield airbag assembly RH (squib)
Airbag sensor assembly
Floor No. 2 wire
Blink
B1162/81
(*1)
(DI-863)Short in curtain shield squib RH circuit
(to ground)Curtain shield airbag assembly RH (squib)
Airbag sensor assembly
Floor No. 2 wire
Blink
B1163/82
(*1)
(DI-866)Short in curtain shield squib RH circuit
(to B+)Curtain shield airbag assembly RH (squib)
Airbag sensor assembly
Floor No. 2 wire
Blink
B1165/87
(*1)
(DI-869)Short in curtain shield squib LH circuitCurtain shield airbag assembly LH (squib)
Airbag sensor assembly
Floor No. 1 wire
Blink
B1166/88
(*1)
(DI-873)Open in curtain shield squib LH circuitCurtain shield airbag assembly LH (squib)
Airbag sensor assembly
Floor No. 1 wire
Blink
B1167/85
(*1)
(DI-876)Short in curtain shield squib LH circuit
(to ground)Curtain shield airbag assembly LH (squib)
Airbag sensor assembly
Floor No. 1 wire
Blink
B1168/86
(*1)
(DI-879)Short in curtain shield squib LH circuit
(to B+)Curtain shield airbag assembly LH (squib)
Airbag sensor assembly
Floor No. 1 wire
Blink
B1180/17
(DI-882)
Short in D squib (2nd step) circuitSteering wheel pad (D squib, 2nd step)
Spiral cable
Airbag sensor assembly
Dash wire
Column wire
ON
B1181/18
(DI-888)
Open in D squib (2nd step) circuitSteering wheel pad (D squib, 2nd step)
Spiral cable
Airbag sensor assembly
Dash wire
Column wire
ON
B1182/19
(DI-893)
Short in D squib (2nd step) circuit
(to ground)Steering wheel pad (D squib, 2nd step)
Spiral cable
Airbag sensor assembly
Dash wire
Column wire
ON
Page 1721 of 3115
DI-704
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
897 Author: Date:
2004 LAND CRUISER (RM1071U)B1183/22
(DI-898)
Short in D squib (2nd step) circuit
(to B+)Steering wheel pad (D squib, 2nd step)
Spiral cable
Airbag sensor assembly
Dash wire
Column wire
ON
B1185/57
(DI-903)Short in P squib (2nd step) circuitFront passenger airbag assembly (squib)
Airbag sensor assembly
Dash wire
ON
B1186/58
(DI-907)Open in P squib (2nd step) circuitFront passenger airbag assembly (squib)
Airbag sensor assembly
Dash wire
ON
B1187/55
(DI-910)Short in P squib (2nd step) circuit
(to ground)Front passenger airbag assembly (squib)
Airbag sensor assembly
Dash wire
ON
B1188/56
(DI-913)Short in P squib (2nd step) circuit
(to B+)Front passenger airbag assembly (squib)
Airbag sensor assembly
Dash wire
ON
B1628/29
(*1)
(DI-913)RSCA cutoff switch indicatorRSCA cutoff switch
Airbag sensor assembly
Dash wire
Instrument panel wire
Blink
NlSystem normal-OFFNormal
(DI-923)Voltage source dropBattery
Airbag sensor assemblyON
*1: w/ Side Airbag
HINT:
When the SRS warning light remains lit up and the DTC is the normal code, a voltage source drop is
possible.
This malfunction is not stored in memory by the airbag sensor assembly and if the power source volt-
age returns to normal, the SRS warning light will automatically go out.
When 2 or more codes are indicated, smaller numbered code will be shown first.
If a code not listed on the chart is displayed, the airbag sensor assembly is at fault.
In the case of any malfunction concerning any open circuit, ground short, or B+ short due to any squib,
another malfunction code may not be detected. In this case, correct the malfunction currently indicated
and then perform malfunction diagnosis again. Another malfunction code may then be detected.
Page 1723 of 3115
DI6P0-19
H21158
Spiral Cable Steering Wheel Pad
(w/ Airbag)
Combination Meter
(Warning Light)Front Passenger
Airbag Assembly
Front Airbag
Sensor LHFront Airbag
Sensor RH
Airbag Sensor Assembly Side Airbag
Assembly LHSide Airbag
Assembly RH
Curtain Shield Airbag
Assembly LHCurtain Shield Airbag
Assembly RH
Seat Belt
Pretensioner LHSeat Belt
Pretensioner RH
Side and Curtain
Shield Airbag
Sensor Assembly LHSide and Curtain
Shield Airbag
Sensor Assembly RH
Curtain Shield Airbag
Sensor Assembly LHCurtain Shield Airbag
Sensor Assembly RH Front Seat
Inner Belt RH
Seat Position
Sensor Assembly
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-705
898 Author: Date:
2004 LAND CRUISER (RM1071U)
PARTS LOCATION
Page 1729 of 3115
H21251
Airbag
Sensor
Assembly12
3
8
91011
14
Front Airbag Sensor RH
5
Front Passenger Airbag
Assembly (Squib)
Spiral
Cable7Steering Wheel
Pad (Squib)6
15
4
16
18
17
19
Seat Belt
Pretensioner RH
Seat Belt
Pretensioner LH
Front Seat Inner Belt LH
Seat Position Sensor Front Airbag Sensor LH
1213
w/o Side Airbag:
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-697
890 Author: Date:
2004 LAND CRUISER (RM1071U)
Page 1730 of 3115
H21159
Airbag
Sensor
Assembly12
3
8
9
10
11
12
13
14Side Airbag
Assembly RH (Squib)
Front Airbag Sensor RH
6
Front Passenger Airbag
Assembly (Squib)
Spiral
CableSteering Wheel
Pad (Squib)
7
15
Front Airbag Sensor LH
Side Airbag
Assembly LH (Squib)
5
16
18
17
Curtain Shield Airbag
Sensor Assembly RH
Curtain Shield Airbag
Assembly LH (Squib)
1920
21
22
Seat Belt
Pretensioner RH
Side and Curtain Shield
Airbag Sensor Assembly RH
Side and Curtain Shield
Airbag Sensor Assembly LHCurtain Shield Airbag
Assembly RH (Squib)
Curtain Shield Airbag
Sensor Assembly LH
Seat Belt
Pretensioner LH
Front Seat Inner Belt LH
Seat Position Sensor 23
RSCA Off Switch
24
25
26
RSCA off Indicator
4
27
2829
DI-698
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
891 Author: Date:
2004 LAND CRUISER (RM1071U)
Page 1951 of 3115
2004 LAND CRUISER (EWD548U)
70G ELECTRICAL WIRING ROUTING
Position of Parts in Instrument Panel
A 14 Accel Position Sensor
A 18 A/C Solar Sensor
A 19 A/C Thermistor
A 24 Air Inlet Control Servo Motor
A 25 Air Mix Control Servo Motor
A 26 Air Vent Mode Control Servo Motor
A 27 Airbag Squib (Front Passenger Airbag Assembly)
A 28 Airbag Squib (Steering Wheel Pad)
A 29 Ashtray Illumination
A 30 Auto Antenna Control Relay
A 31 Automatic Light Control Sensor
A 41 ABS & BA & TRAC & VSC ECU
A 42 ABS & BA & TRAC & VSC ECU
A 43 ABS & BA & TRAC & VSC ECU
A 44 ABS & BA & TRAC & VSC ECU
A 45 A/C Control Assembly
A 46 A/C Control Assembly
A 47 A/C Control Assembly
A 48 A/T Shift Lever Illumination
Shift Lock Control ECU
B 1 Blower Motor Controller
B 7 Body ECU
B 8 Body ECU
B 9 Body ECU
C 5 Center Diff. Lock Control Relay
C 10 Cigarette LighterC 11 Cigarette Lighter Illumination
C 12 Combination Meter
C 13 Combination Meter
C 14 Combination Meter
C 15 Combination Meter
C 16 Combination SW
C 17 Combination SW
C 18 Combination SW
C 19 Combination SW
C 25 Center Airbag Sensor Assembly
C 26 Center Airbag Sensor Assembly
C 27 Center Airbag Sensor Assembly
C 28 Center Cluster Integration Panel
D 7 Data Link Connector 3
D 26 DVD Automatic Changer
E 4 Electronically Controlled Transmission Pattern Select SW
E 5 Engine Control Module
E 6 Engine Control Module
E 7 Engine Control Module
E 8 Engine Control Module
E 9 Engine Control Module
G 3 Glove Box Light
G 4 Gateway ECU
I 18 Ignition SW
Page 2039 of 3115
L PART NUMBER OF CONNECTORS
Code Part Name Part NumberCodePart Name Part Number
Note : Not all of the above part numbers of the connector are established for the supply.
2004 LAND CRUISER (EWD548U)
406
A 1A/C Ambient Temp. Sensor90980-1 1070
A 4Pressure SW90980-10943
A5A/C Lock Sensor90980-1 1016A 5A/C Magnetic Clutch90980-1 1016
A12ABS Speed Sensor Front LH90980-10941
A13ABS Speed Sensor Front RH90980-1 1002
A14Accel Position Sensor90980-1 1144
A15Airbag Sensor Front LH90980-1 1856A16Airbag Sensor Front RH90980-11856
A17Auto Antenna Motor90980-1 1194
A18A/C Solar Sensor90980-1 1919
A19A/C Thermistor90980-1 1918
A24Air Inlet Control Servo Motor90980-1 1909
A25Air Mix Control Servo Motor90980-10797
A26Air Vent Mode Control Servo Motor90980-1 1165
A27Airbag Squib (Front Passenger Airbag
Assembly)
90980-12160
A28Airbag Squib (Steering Wheel Pad)
90980 12160
A29Ashtray Illumination90980-10825
A30Auto Antenna Control Relay90980-10819
A31Automatic Light Control Sensor90980-12056
A32A/C Amplifier (Rear)90980-1 1502
A33A/C Amplifier (Rear)90980-1 1475
A34A/C Amplifier (Rear)90980-1 1497
A35ABS Speed Sensor Rear LH90980-1 1073A36ABS Speed Sensor Rear RH90980-11073
A37ABS & BA & TRAC & VSC Actuator90980-1 1413
A38ABS & BA & TRAC & VSC Actuator90980-10895
A39ABS & BA & TRAC & VSC Actuator90980-1 1151
A40ABS & BA & TRAC & VSC Actuator90980-1 1009
A41ABS & BA & TRAC & VSC ECU90980-1 1935
A42ABS & BA & TRAC & VSC ECU90980-1 1476
A43ABS & BA & TRAC & VSC ECU90980-1 1637
A44ABS & BA & TRAC & VSC ECU90980-1 1638
A45A/C Control Assembly90980-12170
A46A/C Control Assembly90980-1 1913
A47A/C Control Assembly90980-1 1927
A48A/T Shift Lever Illumination90980-1 1911A48Shift Lock Control ECU90980-1 1911
B 1Blower Motor Controller90980-10910
B 2Back Door Courtesy SW90980-10039
B 3Back Door Key Lock and Unlock SW90980-1 1490
B4Back Door Lock Motor90980-1 1150B 4Back Door Unlock Detection SW90980-11150
B 5Buckle SW LH90980-1 1169B 6Buckle SW RH90980-1 1169
B 7Body ECU90980-12151
B 8Body ECU90980-12149
B 9Body ECU90980-12150
C 1Camshaft Position Sensor90980-10947
C 2Center Diff. Lock Control Motor90980-1 1024
C 3Crankshaft Position Sensor90980-1 1162
C 5Center Diff. Lock Control Relay90980-10801
C10Cigarette Lighter90980-10760
C11Cigarette Lighter Illumination90980-1 1148
C12Combination Meter82824-60060
C13Combination Meter82824-60050
C14Combination Meter82824-60060
C15Combination Meter82824-60050
C16Combination SW90980-1 1672
C17Combination SW90980-12155
C18Combination SW90980-12183
C19Combination SW90980-1 1594
C25
Center Airbag Sensor Assembly (w/ Side
Airbag)82824-50160
C25Center Airbag Sensor Assembly (w/o Side
Airbag)90980-1 1873
C26Center Airbag Sensor Assembly90980-1 1872
C27
Center Airbag Sensor Assembly (w/ Side
Airbag)82824-50150
C27Center Airbag Sensor Assembly (w/o Side
Airbag)90980-1 1871
C28Center Cluster Integration Panel90980-12200
C29Curtain Shield Airbag Squib LH90980-1 1864C30Curtain Shield Airbag Squib RH90980-1 1864
D 1Data Link Connector 190980-1 1195
D 2Daytime Running Light Relay No.390980-10939
D 3Daytime Running Light Relay No.390980-10940
D 4Detection SW (Center Diff. Lock)90980-1 1250D 5Detection SW (Transfer L Position)90980-11250
D 6Detection SW (Transfer Neutral Position)90980-1 1025
D 7Data Link Connector 390980-1 1665
D10Door Courtesy Light Front LH
D11Door Courtesy Light Front RH90980-1 1148D12Door Courtesy Light Rear LH90980-1 1148
D13Door Courtesy Light Rear RH
D14Door Courtesy SW Front LH
D15Door Courtesy SW Front RH90980-10871D16Door Courtesy SW Rear LH90980-10871
D17Door Courtesy SW Rear RH
D18Door Key Lock and Unlock SW LH90980-1 1170D19Door Key Lock and Unlock SW RH90980-11170
D20Door Lock Control SW RH90980-1 1950
Page 2241 of 3115
2004 LAND CRUISER (EWD548U)
234VSC
1. ABS Operation
If the brake pedal is depressed suddenly, the ABS controls the hydraulic pressure of the wheel cylinders for all the four
wheels to automatically avoid wheel locking and ensure the directional and steering stability of the vehicle. If the brake pedal
is depressed suddenly, the ABS & BA & TRAC & VSC ECU controls the solenoids in the actuators using the signals from the
sensors to move the brake fluid to the reservoir in order to release the braking pressure applied to the wheel cylinder. If the
ABS & BA & TRAC & VSC ECU detects that the fluid pressure in the wheel cylinder is insufficient, the ECU controls the
solenoids in the actuators to increase the braking pressure.
2. Traction Control Operation
The traction control system controls the engine torque, the hydraulic pressure of the driving wheel cylinders, slipping of the
wheels which may occur at start or acceleration of the vehicle, to ensure an optimal driving power and vehicle stability
corresponding to the road conditions.
3. VSC Operation
Unexpected road conditions, vehicle speed, emergency situation, and any other external factors may cause large under- or
over-steering of the vehicle. If this occurs, the VSC system automatically controls the engine power and wheel brakes to
reduce the under- or over-steering.
To reduce large over-steering :
If the VSC system determines that the over-steering is large, it activates the brakes for the outer turning wheels depending
on the degree of the over-steering to produce the moment toward the outside of the vehicle and reduce the over-steering.
To reduce large under-steering :
If the VSC system determines that the under-steering is large, it controls the engine power and activates the rear wheel
brakes to reduce the under-steering.
VSC indicator light
If an error occurs in the VSC system, the VSC indicator lights up to warn the driver.
4. Traction Mode and VSC Function
When the center differential of the transfer is locked, the VSC function is turned off. At this time, the VSC OFF indicator light
in the combination meter will come on, and informs the driver that the VSC function is OFF.
5. Mutual System Control
To efficiently operate the VSC system at its optimal level, the VSC system and other control systems are mutually controlled
while the VSC system is being operated.
Engine throttle control
The engine power does not interfere with the VSC brake control by controlling the opening of the throttle and reducing the
engine output.
Engine control and electronically controlled transmission control
The strong braking force does not interfere with the braking force control of the VSC system by turning off the accel. and
reducing changes in the driving torque at shift-down.
VSC system operation indication
The slip indicator light flashes and the buzzer sounds intermittently to warn the driver that the current road is slippery, while
the VSC system is being operated.
6. Fail Safe Function
If an error occurs in the ABS & BA & TRAC & VSC ECU, sensor signals, and/or actuators, the ABS & BA & TRAC & VSC
ECU inhibits the brake actuator control and inputs the error signal to the engine control module. According to the error signal,
the brake actuator turns off the solenoid and the engine control module rejects any electronically controlled throttle open
request from the VSC system. As a result, the vehicle functions without the ABS, BA, TRAC, and VSC systems.
System Outline