power steering TOYOTA LAND CRUISER 1986 Factory Owner's Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 1986, Model line: LAND CRUISER, Model: TOYOTA LAND CRUISER 1986Pages: 3115, PDF Size: 54.88 MB
Page 1466 of 3115
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).
Page 1467 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-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
moreBattery
ECU power source circuit
Tilt and telescopic ECU
WIRING DIAGRAM
DI23I-16
Page 1468 of 3115
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).
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 1470 of 3115
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
Page 1471 of 3115
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMNDI-675
868 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check ECU-B fuse.
PREPARATION:
Remove ECU-B fuse from engine room R/B.
CHECK:
Check continuity of ECU-B fuse.
OK:
Continuity
NG Check for short in harness and all components
connected to ECU-B fuse.
OK
Check for open circuit in harness and con-
nector between ECU and battery
(See page IN-36).
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 1473 of 3115
F05527
S5V1 SG1 S5V2SG2
ON
(+) (-)(+) (-)
DI-680- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
873 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check voltage between terminals S5V1 and SG1, S5V2 and SG2 of ECU connec-
tor.
PREPARATION:
Remove ECU with connectors still connected.
CHECK:
Measure voltage between terminals S5V1 and SG1, S5V2 and
SG2 of ECU connector.
OK:
Voltage: 4.5 - 5.5 V
NG Go to step 3.
OK
2 Check for open circuit in harness and connector between terminals S5V1 and
SG1, S5V2 and SG2 of ECU connector.
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown on
the problem symptoms table
(See page DI-663).
3 Check for short circuit in harness between terminals S5V1 and SG1, S5V2 and
SG2 of ECU connector.
NG Repair or replace harness or connector.
OK
Check and replace tilt and telescopic ECU
(See page IN-36).
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 1475 of 3115
F03704
ON
TOYOTA
Hand-held
TesterExtend
Contract
F05991
Telescopic Motor
Tilt Motor
Connector Telescopic
Motor
Connector
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMNDI-685
878 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 telescopic 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 column length become short (long) and
confirm that telescopic position value change when the AC-
TIVE TEST carried out.
OK:
Steering column length must be short (long).
Telescopic position value must be changed.
OK Proceed to next circuit inspection shown on the
problem symptoms table (See page DI-663).
NG
2 Check telescopic motor.
PREPARATION:
(a) Disconnect telescopic motor connector and tilt motor con-
nector.
(b) Remove telescopic motor (See page SR-30).
CHECK:
Connect tilt motor connector to telescopic motor. Then confirm
that telescopic motor moved when operating the manual
switch.
NG Replace telescopic motor.
OK