power steering TOYOTA LAND CRUISER 1986 Factory Owner's Guide
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 1986, Model line: LAND CRUISER, Model: TOYOTA LAND CRUISER 1986Pages: 3115, PDF Size: 54.88 MB
Page 1476 of 3115
DI-686- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
879 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check for open or short circuit in harness and connector between tilt and tele-
scopic ECU and telescopic motor (See page IN-36).
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown on
the problem symptoms table
(See page DI-663).
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 1478 of 3115
F03702
ON
Up
Down TOYOTA
Hand-held
Tester
F05991
Tilt MotorTilt Motor
Connector
Telescopic Motor
Connector
DI-682- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
875 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
In case of using TOYOTA hand-held tester, start inspection from step 1.
In case of not using TOYOTA hand-held tester, start inspection from step 2.
1 Check tilt motor operation 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 the ACTIVE TEST mode on the TOYOTA hand-
held tester.
CHECK:
Check that the steering wheel tilt up (down) and confirm that tilt
position value change when the ACTIVE TEST carried out.
OK:
Steering wheel must be moved upward (downward).
Tilt position value must be changed.
OK Proceed to next circuit inspection shown on the
problem symptoms table (See page DI-663).
NG
2 Check tilt motor.
PREPARATION:
(a) Disconnect tilt motor connector and telescopic motor con-
nector.
(b) Remove tilt motor (See page SR-30).
CHECK:
Connect telescopic motor connector to tilt motor. Then confirm
that tilt motor moved when operating the manual switch.
NG Replace tilt motor.
OK
Page 1479 of 3115
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMNDI-683
876 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check for open or short circuit in harness and connector between tilt and tele-
scopic ECU and tilt motor (See page IN-36).
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown on
the problem symptoms table
(See page DI-663).
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 1481 of 3115
F05351
ON
MSW GND
(+) (-)
F05352
ON
VC
(+) (-)
DI-688- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
881 Author: Date:
2004 LAND CRUISER (RM1071U)
When not using TOYOTA hand-held tester
PREPARATION:
Remove tilt and telescopic ECU with connector still connected.
CHECK:
Measure voltage between terminals MSW and GND of ECU
connector when operating the manual switch.
OK:
Manual switch positionStandard voltage
Neutral position0.00 - 0.20 V
Tilt up1.30 - 1.70 V
Tilt down0.30 - 0.50 V
Telescopic short0.65 - 0.95 V
Telescopic long2.05 - 2.75 V
RESULT:
ASwitch voltages in all directions are within the standard.
BSwitch voltage in a certain direction is out of the standard.
CSwitch voltages in all directions are out of the standard.
A Proceed to next circuit inspection shown on the
problem symptoms table (See page DI-663).
B Replace the manual switch.
C
2 Check voltage between terminal VC of ECU connector and body ground.
PREPARATION:
Remove ECU with connectors still connected.
CHECK:
Measure voltage between terminal VC of ECU and body
ground.
OK:
Voltage: 4.5 - 5.5 V
NG Go to step 4.
OK
Page 1482 of 3115
F03706
MSW
VC
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMNDI-689
882 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check tilt and telescopic manual switch.
PREPARATION:
Disconnect combination switch connector.
CHECK:
Measure resistance between terminals VC and MSW of com-
bination switch connector when operating the manual switch.
OK:
Switch positionResistance
Tilt up360 W
Tilt down1,990 W
Telescopic short790 W
Telescopic long160 W
NG Replace the manual switch.
OK
4 Check for open or short circuit in harness and connector between tilt and tele-
scopic ECU and manual switch (See page IN-36).
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown on
the problem symptoms table
(See page DI-663).
Page 1483 of 3115
DI238-03
:
Customer 's Name
Date Vehicle
Brought InRegistration Year Registration No.
Frame No.
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ContinuousIntermittent ( times a day)
DTC CheckNormal Code
Malfunction Code (Code )
Normal CodeMalfunction Code (Code )
Symptomskm
miles Inspector 's
Name
POWER TILT AND POWER TELESCOPIC
STEERING SYSTEM CHECK SHEET
Manual Function
does not Operate
Auto Away/Return
Function does not
Operate
Memory Function does not OperateBoth Tilt and Telescopic
Tilt only
Telescopic only
Both Auto Away and Auto Return
Auto Away only
Auto Return only
1st Time
2nd Time
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMNDI-657
850 Author: Date:
2004 LAND CRUISER (RM1071U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 1484 of 3115
DI1T7-1 1
DI-660- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
853 Author: Date:
2004 LAND CRUISER (RM1071U)
DIAGNOSTIC TROUBLE CODE CHART
If a DTC is displayed during the DTC check, check the circuit for that code listed in the table below. For details
of each code, turn the page referred to under the ºSee pageº for the respective ºDTC No.º in the DTC chart.
DTC No.
(See Page)Detection ItemTrouble Area
B2603
(DI-665)Tilt and telescopic manual switch malfunctionTilt and telescopic manual switch circuit
Tilt and telescopic ECU
B2610
(DI-667)Tilt position sensor or tilt motor malfunction
Sensor power source circuit
Actuator power source circuit
Tilt motor circuit
Tilt and telescopic ECU
B2611
(DI-669)Telescopic position sensor or telescopic motor malfunction
Sensor power source circuit
Actuator power source circuit
Telescopic motor circuit
Tilt and telescopic ECU
B2620
(DI-671)ECU power source circuit malfunction
Battery
ECU power source circuit
Tilt and telescopic ECU
Page 1485 of 3115
DI237-14
Vehicle Brought to Workshop
Customer Problem Analysisare titles of pages in this manual, Items inside
with the page number indicated in the bottom portion.
See the inscribed pages for detailed explanations.
P. DI-657
Check and Clear DTC (Precheck)
Symptom Simulation
Symptomdoes not occur Symptom
Problem Symptoms Table
Circuit Inspection DTC ChartP. DI-658
Problem Symptom Confirmation
occurP. IN-26
DTC CheckNormal code
P. DI-658
P. DI-660P. DI-663
P. DI-665 ~ DI-687
Identification of Problem
Repair
Confirmation Test
EndStep 2, 5, 8, 9: Diagnostic steps permitting the use of the
TOYOTA hand-held tester. Malfunction code 1
2
34
5
8 67
9
Parts Inspection DI-656
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
849 Author: Date:
2004 LAND CRUISER (RM1071U)
POWER TILT AND POWER TELESCOPIC STEERING
COLUMN
HOW TO PROCEED WITH TROUBLESHOOTING
Perform troubleshooting in accordance with the procedure on the following page.