Page 1469 of 3115
F17298
Tilt & Telescopic ECU
BatteryMAINEngine Room J/B
GND ECU-B2
3D
T7
W-B J1
J/CECUB
T7 3B
IICowl Side J/B RH
1
6 L-W
FL Block
F152
B-G
Cowl Side J/B RH1C1
12 Short Pin(A)
BAT
1B24 L-O 2539
W-B
3D 42
AA
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMNDI-673
866 Author: Date:
2004 LAND CRUISER (RM1071U)
ECU Power Source Circuit
CIRCUIT DESCRIPTION
The ECU power source supplies power to the CPU and sensors, etc. power is supplied to the ECU even
when the ignition switch is lock position.
WIRING DIAGRAM
DI23K-16
Page 1472 of 3115
F17328
T9
Tilt Motor
T4
Telescopic MotorTilt and Telescopic ECU
S5V1
SG1
S5V2
SG2
SG2 S5V2SG1 S5V1G-W
G-Y
B-W
B-YII5
12 10
G-W
G-YT8
T8
T8
T8 II5 3
7
3
713
14
12
10
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMNDI-679
872 Author: Date:
2004 LAND CRUISER (RM1071U)
Sensor Power Source Circuit
CIRCUIT DESCRIPTION
Power to the position sensor is output from ECU.
WIRING DIAGRAM
DI1TO-14
Page 1474 of 3115
F17312
T4
Telescopic Motor
Tilt & Telescopic ECU
S5V2
SIN2
SG2
A2
B2
F/B2
COM2S5V2
SIN2
SG2
A2
B2
F/B2
COM2 T8
T8
T8
T8
T8
T8
T8 3
8
7
1
4
6
5B-W
B-R
B-Y
W
G
R
B12
11
10
1
8
2
9
Cowl Side J/B RH42
J1
Junction
Connector 3D
II(Shielded)
A
A W-B DI-684
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
877 Author: Date:
2004 LAND CRUISER (RM1071U)
Telescopic Motor Circuit
CIRCUIT DESCRIPTION
The ECU provides both +B and ground for the telescopic motor.
Reversing polarity of the applied voltage reverses the motor.
WIRING DIAGRAM
DI23N-17
Page 1477 of 3115
F17327
T9 Tilt MotorTilt & Telescopic ECU
S5V1
SIN1
SG1
A1
B1
F/B1
COM1 T8
T8
T8
T8
T8
T8
T813
5
14
7
16
6
15 G-W
G-R
G-Y
P
V
B
G II5
12 11 10
16
17
15
18 II5
II5
II3
II3
II3
II3 G-W
G-R
G-Y
P
L
B
Y S5V1
SIN1
SG1
A1
B1
F/B1
COM13
8
7
1
4
6
5
Cowl Side J/B RH42
J1
Junction
Connector (Shielded)
3D
II (Shielded)
(Shielded)
A
A
W-B
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMNDI-681
874 Author: Date:
2004 LAND CRUISER (RM1071U)
Tilt Motor Circuit
CIRCUIT DESCRIPTION
The ECU provided both +B and ground for the tilt motor.
Reversing polarity of the applied voltage reverses the motor.
WIRING DIAGRAM
DI23M-18
Page 1480 of 3115
F17326
C17
Tilt & Telescopic Unit (Combination Switch)Tilt & Telescopic ECU
MSW V (1.2 kW)2
5 T7VC 16
8
V-YT7
Telescopic
Short Tilt Down Telescopic
Long Tilt Up (430 W) (200 W) (160 W)
V
V-YII5
II58
9 VC
MSW
BE6653
F03819F04058
Telescopic
Extend
(Long)
TOYOTA
Hand-held
TesterTilt Up ON
Tilt Down Telescopic
Contract
(Short)
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMNDI-687
880 Author: Date:
2004 LAND CRUISER (RM1071U)
Tilt and Telescopic Manual Switch Circuit
CIRCUIT DESCRIPTION
The different voltage signals which are occurred by operating the manual switch are sent to the tilt and tele-
scopic ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check tilt and telescopic manual switch voltage.
When using TOYOTA hand-held tester
PREPARATION:
(a) Connect the TOYOTA hand-held tester to the DLC3.
(b) Turn ignition switch ON and push the TOYOTA hand-held
tester main switch ON.
(c) Select DATALIST mode on the TOYOTA hand-held tes-
ter.
CHECK:
Read the voltages on the tester screen when operating the
manual switch.
DI23O-13
Page 1491 of 3115
DI23C-14
F05341
1
1 3
8 2
2
9 3 4
10 11 12 13 14 15 16765
4 5 6 87
T7T8
DI-662- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
855 Author: Date:
2004 LAND CRUISER (RM1071U)
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
IG (T7 4) GND (T7 6)BW WBIG switch ON10 - 14 (DC)IG (T7-4) - GND (T7-6)B-W - W-BIG switch LOCKBelow 1 (DC)
VC (T7-2) - GND (T7-6)V - W-BAlways4.5 - 5.5 (DC)
GND (T7-6) - Body GroundW-B -
Body GroundAlwaysBelow 1 (DC)
ECUB (T7-1) - Body GroundL-W -
Body GroundAlways10 - 14 (DC)
ECUB (T7-1) - GND (T7-6)L-W - W-BAlways10 - 14 (DC)
Tilt up by manual switch1.30 - 1.70 (DC)
Tilt down by manual switch0.30 - 0.50 (DC)
MSW (T7-5) - GND (T7-6)V-Y - W-BTelescopic extended by manual switch2.05 - 2.75 (DC)MSW (T7 5) GND (T7 6)VY WB
Telescopic contracted by manual switch0.65 - 0.95 (DC)
Manual switch is not operatingBelow 0.20 (DC)
+B (T8-4) - GND (T7-6)G-B - W-BAlways10 - 14 (DC)
S5V1 (T8-13) - SG1 (T8-14)G-W - G-YIG switch ON4.5 - 5.5 (DC)
S5V2 (T8-12) - SG2 (T8-10)B-W - B-YIG switch ON4.5 - 5.5 (DC)
A1 (T8-7) - COM1 (T8-15)P - GIG switch ON, tilt up or down by manual switch190 - 230 (AC)
B1 (T8-16) - COM1 (T8-15)V - GIG switch ON, tilt up or down by manual switch190 - 230 (AC)
A2 (T8-1) - COM2 (T8-9)W - BIG switch ON, telescopic extend or contracted by manual switch190 - 230 (AC)
B2 (T8-8) - COM2 (T8-9)G - BIG switch ON, telescopic extend or contracted by manual switch190 - 230 (AC)
Page 1492 of 3115
DI3IY-09
H05146
A28
D Squib
Spiral CableY-B
Y1
II4
2
II4Y-B
YAirbag Sensor Assembly
14
C26
13D+
D- 1
2
C26
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-71 1
904 Author: Date:
2004 LAND CRUISER (RM1071U)
CIRCUIT INSPECTION
DTC B0100/13 Short in D Squib Circuit
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assembly, the spiral cable and the steering wheel pad.
It causes the airbag to deploy when the airbag deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-3.
DTC B0100/13 is recorded when a short is detected in the D squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0100/13
Short in D squib circuit
D squib malfunction
Spiral cable malfunction
Airbag sensor assembly malfunctionSteering wheel pad (D squib)
Spiral cable
Airbag sensor assembly
Dash wire
Column wire
WIRING DIAGRAM
Page 1498 of 3115
H19229H21259H10678
D Squib
D+
(-) (+) D-
Spiral
CableAirbag
Sensor
Assembly
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-717
910 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC B0101/14 Open in D Squib Circuit
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assembly, the spiral cable and the steering wheel pad.
It causes the airbag to deploy when the airbag deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-3.
DTC B0101/14 is recorded when an open is detected in the D squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0101/14
Open in D squib circuit
D squib malfunction
Spiral cable malfunction
Airbag sensor assembly malfunctionSteering wheel pad (D squib)
Spiral cable
Airbag sensor assembly
Dash wire
Column wire
WIRING DIAGRAM
See page DI-71 1.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-923).
2 Check D squib circuit.
CHECK:
Measure the resistance between D+ and D- of the orange con-
nector on the steering wheel pad (D squib) side between the air-
bag sensor assembly and the steering wheel pad (D squib).
OK:
Resistance: Below 1 W
NG Go to step 5.
OK
DI3IZ-04
