TOYOTA LAND CRUISER 1998 Factory Repair Manual

DI23F-13
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
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMNDI-665
858 Author
: Date
:
2004 LAND CRUISER (RM1071U)
CIRCUIT INSPECTION
DTC B2603 Tilt and Telescopic Manual switch circuit
Malfunction
CIRCUIT DESCRIPTION
The different voltage value is input to tilt and telescopic ECU by operating the manual switch. Then tilt and
telescopic ECU judges which motor and which direction tilt motor or telescopic motor should be moved based
on the voltage value.
DTC No.DTC Detecting ConditionTrouble Area
B2603
The abnormal voltage value which is not within the specifi-
cation is input to tilt and telescopic ECU when being oper-
ated with the manual switch.
Tilt and telescopic manual switch circuit

Tilt and telescopic ECU
WIRING DIAGRAM

DI-666- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
859 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check tilt and telescopic manual switch circuit (See page DI-687).
NG Repair or replace malfunction part.
OK
Check and replace the tilt and telescopic
ECU (See page IN-36).

F03815
Tilt Up
Mechanical
Lock PositionTilt Down
Mechanical
Lock Position
Operation Range
Tilt Up Limit
PositionTilt Down
Limit Position
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-667
860 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC B2610 Tilt Position Sensor or Tilt Motor Circuit
Malfunction
CIRCUIT DESCRIPTION
Tilt motor is operated by the power voltage supplied from tilt and
telescopic ECU and makes the steering column tilt upward and
downward. Tilt position sensor (Hole IC) in the tilt motor detects
the tilt of the steering column and outputs the signal to the CPU
in response to that tilt.
HINT:
Limit positions can be confirmed on the screen of the TOYOTA
hand-held tester.
DTC No.DTC Detecting ConditionTrouble Area
B2610During tilt function operation, tilt operation stops within the
operation range.

Sensor power source circuit

Actuator power source circuit

Tilt motor circuit

Tilt and telescopic ECU
WIRING DIAGRAM
DI23G-17

DI-668- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
861 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check sensor power source circuit (See page DI-679).
NG Repair or replace malfunction part.
OK
2 Check actuator power source circuit (See page DI-676).
NG Repair or replace malfunction part.
OK
3 Check tilt motor circuit (See page DI-681).
NG Repair or replace malfunction part.
OK
Check and replace the tilt and telescopic
ECU (See page IN-36).

F03815
Telescopic Extends
Mechanical
Lock Position Telescopic Contracts
Mechanical Lock
Position
Operation Range
Telescopic Contracts
Limit PositionTelescopic Extends
Limit Position
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
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMNDI-669
862 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC B2611 Telescopic Position Sensor or Telescopic
Motor Circuit Malfunction
CIRCUIT DESCRIPTION
Telescopic motor is operated by the power voltage supplied
from tilt and telescopic ECU and makes the steering column
slide forward and rearward. Telescopic position sensor (Hole
IC) in the telescopic motor detects the sliding position of the for-
ward and rearward direction of the steering column and outputs
the signal to the CPU in response to that sliding amount.
HINT:
Limit positions can be confirmed on the screen of the TOYOTA
hand-held tester.
DTC No.DTC Detecting ConditionTrouble Area
B2611During telescopic function operation, telescopic operation
stops within the operation range.

Sensor power source circuit

Actuator power source circuit

Telescopic motor circuit

Tilt and telescopic ECU
WIRING DIAGRAM
DI23H-17

DI-670- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
863 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check sensor power source circuit (See page DI-679).
NG Repair or replace malfunction part.
OK
2 Check actuator power source circuit (See page DI-676).
NG Repair or replace malfunction part.
OK
3 Check telescopic motor circuit (See page DI-684).
NG Repair or replace malfunction part.
OK
Check and replace the tilt and telescopic
ECU (See page IN-36).

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-671
864 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC B2620 ECU Power Source Circuit Malfunction
CIRCUIT DESCRIPTION
ECU power source circuit supply the battery positive voltage to tilt and telescopic ECU.
DTC No.DTC Detecting ConditionTrouble Area
B2620
The condition that the voltage of the ECU Power Source
circuit drop to be 8V or less continues for 10 seconds or
more
Battery

ECU power source circuit

Tilt and telescopic ECU
WIRING DIAGRAM
DI23I-16

DI-672- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
865 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check that the battery positive voltage is 11V or more when engine is stopped.
NG Charge or replace battery.
OK
2 Check ECU power source circuit (See page DI-673).
NG Repair or replace malfunction part.
OK
Check and replace the tilt and telescopic
ECU (See page IN-36).

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

F05348
LOCK
ECUB
GND
(+) (-)
F05349
LOCK
GND
(-) (+)
DI-674- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
867 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check voltage between terminals ECUB and GND of ECU connector.
PREPARATION:
Remove ECU with connectors still connected.
CHECK:
Measure voltage between terminals ECUB and GND of ECU
connector.
OK:
Voltage: 8 - 16 V
OK Proceed to next circuit inspection shown on the
problem symptoms table (See page DI-663).
NG
2 Check continuity between terminal GND of ECU connector and body ground.
CHECK:
Measure resistance between terminal GND of ECU connector
and body ground.
OK:
Resistance: 1 kW or less
NG Repair or replace harness or connector.
OK