turn signal TOYOTA LAND CRUISER 1986 Factory User 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 798 of 3115
DI-546- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
739 Author: Date:
2004 LAND CRUISER (RM1071U)
DTCC1231 / 31, C1335 / 35Steering Angle Sensor Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1231 / 31
Detection of any of the conditions 1. through 3.:
1. When the condition that ECU terminal IG1 voltage is 9.5
V or more, and does not receive data from steering
angle sensor continues for 1 sec. or more.
2. When the steering angle sensor value changes by 360°
or more with SSC signal from steering angle sensor
remaining ON or OFF.
3. When the condition that difference between the steering
angle value at edge occurring in SSC signal and the
value at edge occurring in SSC signal after turning the
steering wheel one-turn is out of the range from 355.5°
- 364.5° occurs 10 times or more.
Steering angle sensor
Steering angle sensor circuit
C1335 / 35
When the ECU IG1 terminal voltage is 9.5 V or more, data
transmission from the steering angle sensor is impossible
for 1 sec. or more.Steering angle sensor
Steering angle sensor circuit
DIC9J-02
Page 801 of 3115
F03003
1 2
6 3 (+)(-)
(+)
(-)
(Oscilloscope) LOCK
F04441
(Reference)
3 ms
2,288 ms
104 ms 5 V
0 V
5 V
0 V
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-549
742 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check steering angle sensor.
PREPARATION:
(a) Remove the steering wheel lower No. 2 and No. 3 covers,
steering wheel pad, steering wheel column upper and
lower covers (See page SR-29).
(b) Disconnect the combination switch connector (for steer-
ing angle sensor).
(c) Connect the oscilloscope to terminals 3 and 6 of the com-
bination switch connector (for steering angle sensor).
(d) Apply battery positive voltage between terminals 1 and 2.
CHECK:
Turn the steering wheel slowly and check the signal waveform.
OK:
HINT:
The above signal waveform does not repeat ON and OFF regu-
larly and this combination changes case by case according to
the data.
NG Replace steering angle sensor.
OK
4 Check that slits of the steering sensor disc are clogged up.
NG Repair or replace steering sensor disc.
OK
Page 803 of 3115
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-551
744 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC C1232 / 32 Deceleration Sensor Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1232 / 32
Detection of either of the conditions 1. or 2.:
1. At a vehicle speed of 6 mph (10 km/h) or more, when
the condition that ECU terminal GL1 signal change
range is less than 20 mV, and ECU terminal GL2 signal
change range swings by 468 mV or more occurs for 30
sec. or more.
2. At a vehicle speed of 6 mph (10 km/h) or more, when
the condition that ECU terminal GL2 signal change
range is less than 20 mV, and ECU terminal GL1 signal
change range swings by 468 mV or more occurs for 30
sec. or more.
Deceleration sensor
Deceleration sensor circuit
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 in case of using the hand-held tester and start from step 2 in case of not
using the hand-held tester.
1 Check output value of the yaw rate (deceleration) sensor.
PREPARATION:
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand-held tester main switch ON.
(c) Select the DATALIST mode on the hand-held tester.
CHECK:
Check that the deceleration value of the deceleration sensor displayed on the hand-held tester is changing
when tilting the vehicle.
OK:
Deceleration value must be changing.
OK Check and replace ABS & BA & TRAC & VSC
ECU.
NG
DIC9K-02
Page 894 of 3115
DIC8V-01
DI-518- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
711 Author: Date:
2004 LAND CRUISER (RM1071U)
DIAGNOSTIC TROUBLE CODE CHART
NOTICE:
When removing the part, turn the ignition switch OFF.
HINT:
Using SST 09843-18020 or 09843-18040, connect terminals Tc and E1 of the DLC1 or Tc and CG
of the DLC3.
If any abnormality is not found when inspecting parts, inspect the ECU.
If a malfunction code is displayed during the DTC check, check the circuit listed that code. For details
of each code, turn to the page referred to under the ºSee pageº for respective ºDTC No.º in the DTC
chart.
DTC chart of ABS:
DTC No.
(See Page)Detection ItemTrouble Area
C0278 / 11
(DI-531)Open or short in ABS solenoid relay circuitABS solenoid relay
C0279 / 12
(DI-531)B+ short in ABS solenoid relay circuit
ABS solenoid relay
ABS solenoid relay circuit
C0226 / 21
(DI-528)Open or short in hydraulic brake booster solenoid circuit (SFR
circuit)Hydraulic brake booster
SFRR or SFRH circuit
C0236 / 22
(DI-528)Open or short in hydraulic brake booster solenoid circuit (SFL
circuit)Hydraulic brake booster
SFLR or SFLH circuit
C0246 / 23
(DI-528)Open or short in hydraulic brake booster solenoid circuit (SRR
circuit)Hydraulic brake booster
SRRR or SRRH circuit
C0256 / 24
(DI-528)Open or short in hydraulic brake booster solenoid circuit (SRL
circuit)Hydraulic brake booster
SRLR or SRLH circuit
C1225 / 25
(DI-543)Open or short in hydraulic brake booster solenoid circuit (SA1
circuit)Hydraulic brake booster
SA1 circuit
C1226 / 26
(DI-543)Open or short in hydraulic brake booster solenoid circuit (SA2
circuit)Hydraulic brake booster
SA2 circuit
C1227 / 27
(DI-543)Open or short in hydraulic brake booster
solenoid circuit (SA3 circuit)Hydraulic brake booster
SA3 circuit
C1228 / 28
(DI-543)Open or short in hydraulic brake booster solenoid circuit (STR
circuit)Hydraulic brake booster
STR circuit
C0200 / 31*1
(DI-615)Right front wheel speed sensor signal malfunction
C0205 / 32*1
(DI-615)Left front wheel speed sensor signal malfunctionRight front, left front, right rear and left rear speed sensor
Eh d i itC0210 / 33*1
(DI-615)Right rear wheel speed sensor signal malfunction
Each speed sensor circuit
Sensor rotor
C0215 / 34*1
(DI-615)Left rear wheel speed sensor signal malfunction
C1235 / 35
(DI-615)Foreign matter is attached on the tip of the right front sensorRight front, left front, right rear, left rear speed sensor
C1236 / 36
(DI-615)Foreign matter is attached on the tip of the left front sensor
Right front, left front, right rear, left rear s eed sensor
Sensor rotor
C1237 / 37
(DI-557)Size of some tires is different from the other tiresTire size
Page 905 of 3115
DI-510- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
703 Author: Date:
2004 LAND CRUISER (RM1071U)SRMF & SRMR
Turns ABS solenoid SRMF & SRMR ON / OFFOperation of solenoid (click-
ing sound) can be heard
SOL RELAYTurns ABS solenoid relay ON/OFFOperation of solenoid (click-
ing sound) can be heard
ABS MOT RELAYTurns ABS motor relay ON/OFFOperation of motor (clicking
sound) can be heard
TRAC MOT RELAYTurns TRC motor relay ON/OFFOperation of motor (clicking
sound) can be heard
ABS WARN LIGHTTurns ABS warning light ON / OFFObserve combination meter
VSC WARN LIGHTTurns VSC warning light ON / OFFObserve combination meter
VSC/ TRC OFF INDTurns VSC / TRC OFF indicator ON / OFFObserve combination meter
SLIP INDI LIGHTTurns SLIP indicator light ON / OFFObserve combination meter
BRAKE WRN LIGHTTurns BRAKE warning light ON / OFFObserve combination meter
VSC/BR WARN BUZTurns VSC / BRAKE warning buzzer ON / OFFBuzzer can be heard
4. FREEZE FRAME DATA
(a) The vehicle (sensor) status memorized during ABS and/or VSC operation or at the time of error code
detection can be displayed by the hand-held tester.
(b) Only one record of freeze frame data is stored and the freeze frame data generated during ABS and/or
VSC operation are constantly updated. Also, the number of the ignition switch's ºONº after the freeze
frame data is stored can be memorized up to 31 and it can be displayed.
HINT:
If the ignition switch ºONº operation exceeds 31 times, º31º appears on the display.
(c) If the diagnosis code abnormality occurs, the freeze frame data at the occurrence of the abnormality
is stored but the ABS actuation data is deleted.
Hand-held tester displayMeasurement ItemReference Value*
VEHICLE SPDWheel speed sensor readingSpeed indicated on speedometer
STOP LIGHT SWStop light switch signalStop light switch ON: ON, OFF: OFF
# IG ONNumber of operations of ignition switch ON after
memorizing freeze frame data0 - 31
MAS CYL PRESSMaster cylinder pressure sensor readingBrake pedal release : 0.3 to 0.9 V
Brake pedal depress: 0.8 to 4.5 V
MASS PRESS GRADEMaster cylinder pressure sensor change-30 to 200 MPa/s
SYSTEMSystem status
ABS activated: ABS
VSC/TRC activated: VSC/TRC
BA activated: BA
Fail safe mode activated: FAIL SF
No system activated: NO SYS
YAW R AT EYaw rate angle sensor reading-100 to 100
STEERING ANGSteering sensor readingLeft turn: Increase
Right turn: Drop
THROTTLEThrottle position sensor readingRelease accelerator pedal: Approx. 0 deg.THROTTLEThrottle position sensor readingRelease accelerator edal: A rox. 0 deg.
Depress accelerator pedal: Approx. 90 deg.
G (RIGHT & LEFT)Right and left G-1.869 to 1.869
G (BACK & FORTH)Back and forth G-1.869 to 1.869
VSC (TRC) OFF SWVSC OFF switch signalTRAC OFF SW ON: ON
OFF: OFF
Page 906 of 3115
F02201
DLC1 E1
TcTs
BR3904
0.13 sec. 0.13 sec.
ON
OFF
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-51 1
704 Author: Date:
2004 LAND CRUISER (RM1071U)Hand-held tester displayReference Value* Measurement Item
SHIFT POSITIONShift lever position
FAIL
P, N
R
D
4
3
2
L
THROTTLEThrottle sensor reading0 to 125 deg.
*: If no conditions are specifically stated for ºIdlingº, it means the shift lever is in the N or P position, the A/C
switch is OFF and all accessory switches are OFF.
5. SPEED SENSOR SIGNAL CHECK (TEST MODE)
HINT:
When replacing the yaw rate sensor or ECU, make sure
to perform a yaw rate sensor zero point calibration.
If the ignition switch is turned from the ON to the ACC or
LOCK position during test mode, DTC will be erased.
(a) In case of not using hand-held tester:
Check the speed sensor signal.
(1) Turn the ignition switch OFF.
(2) Using SST, connect terminals Ts and E
1 of the
DLC1.
SST 09843-18020
(3) Start the engine.
(4) Check that the ABS warning light blinks.
HINT:
If the ABS warning light does not blink, inspect the ABS warning
light circuit and Ts circuit (See page DI-627 and DI-653).
(5) Keep the vehicle in the stationary condition on the
flat place for 6 sec. or more.
(6) Shift the transfer lever in the L4 position and turn the
center diff. lock switch ON.
(7) Shift the transfer lever back.
Page 908 of 3115
F06425
Hand-held
Tester
DLC3
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-513
706 Author: Date:
2004 LAND CRUISER (RM1071U)
(b) In case of using hand-held tester:
Check the sensor signal.
(1) Hook up the hand-held tester to the DLC3.
(2) Do step (3) to (10) on the previous page.
(3) Read the DTC by following the prompts on the tes-
ter screen.
HINT:
Please refer to the hand-held tester operator's manual for fur-
ther details.
DTC of speed sensor signal check function:
Code No.DiagnosisTrouble Area
C1271 / 71Low output voltage in right front speed sensor
Right front speed sensor
Sensor installation
Sensor rotor
C1272 / 72Low output voltage in left front speed sensor
Left front speed sensor
Sensor installation
Sensor rotor
C1273 / 73Low output voltage in right rear speed sensor
Right rear speed sensor
Sensor installation
Sensor rotor
C1274 / 74Low output voltage in left rear speed sensor
Left rear speed sensor
Sensor installation
Sensor rotor
C1275 / 75Abnormal change in output voltage of right front speed
sensorRight front speed sensor rotor
C1276 / 76Abnormal change in output voltage of left front speed
sensorLeft front speed sensor rotor
C1277 / 77Abnormal change in output voltage of right rear speed
sensorRight rear speed sensor rotor
C1278 / 78Abnormal change in output voltage of left rear speed
sensorLeft rear speed sensor rotor
C1279 / 79Deceleration sensor is faultyDeceleration sensor
Sensor installation
C1281 / 81Master cylinder pressure sensor output signal is faultyMaster cylinder pressure sensor
C1282 / 82Transfer indicator (center diff. lock) switch malfunctionTransfer indicator (center diff. lock) switch
C1283 / 83Transfer L4 position switch malfunctionTransfer L4 position switch
6. In case of not using hand-held tester:
VSC SENSOR CHECK (TEST MODE)
NOTICE:
When having replaced the yaw rate sensor, deceleration
sensor and/or ECU, perform a zero point calibration of the
yaw rate and deceleration sensors (See step 8.).
HINT:
If the ignition switch is turned from the ON to the ACC or LOCK
during test mode, DTC will be erased.
Page 910 of 3115
Malfunction Code (Example Code 71, 72)
ON
OFF
0.5 sec.0.5 sec.
1.5 sec.2.5 sec.
4 sec.
Repeat
71
72
F06425
Hand-held
Tester
DLC3
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-515
708 Author: Date:
2004 LAND CRUISER (RM1071U)
If 2 or more malfunctions are indicated at the same time,
the lowest numbered code will be displayed 1st.
(3) After doing the check, disconnect the SST from ter-
minals of the DLC1 or terminals of the DLC1 and
DLC3 and turn the ignition switch OFF.
SST 09843-18020 or 09843-18040
7. In case of using hand-held tester:
CHECK VSC SENSOR SIGNAL
NOTICE:
When having replaced the yaw rate sensor, deceleration
sensor and/or ECU, perform a zero point calibration of the
yaw rate and deceleration sensors (See step 7.). Make sure
that this operation should be done before starting the fol-
lowing.
(a) Hook up the hand-held tester to the DLC3.
(b) Do steps (a)-(2) and from (a)-(4) to (c) on the previous
page.
(c) Read the DTC by following the prompts on the tester
screen.
HINT:
Please refer to the hand-held tester operator's manual for fur-
ther details.
DTC of the VSC sensor check function:
Code No.DiagnosisTrouble Area
C0371 / 71Yaw rate sensor output signal malfunctionYaw rate sensor
Yaw rate sensor circuit
Page 913 of 3115
DIC91-01
DI-526- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
719 Author: Date:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each
problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
NOTICE:
When replacing the skid control ECU, sensor, etc., turn the ignition switch OFF.
SymptomSuspected AreaSee page
ABS does not operate
BA does not operate
Only when 1. to 4. are all normal and the problem is still
occurring, replace the skid control ECU.
1. Reconfirm the DTC and check that the normal code is
output.
2. IG power source circuit
3. Speed sensor circuit
4. Check the hydraulic brake booster with a checker or
hand-held tester.
If abnormal, check the hydraulic circuit for leakage (See
page DI-655).
DI-505
DI-558
DI-615
BR-40
ABS does not operate efficiently
BA does not operate
Only when 1. to 4. are all normal and the problem is still
occurring, replace the skid control ECU.
1. Reconfirm the DTC and check that the normal code is
output.
2. Speed sensor circuit
3. Stop light switch circuit
4. Check the hydraulic brake booster with a checker or
hand-held tester.
If abnormal, check the hydraulic circuit for leakage (See
page DI-655).
DI-505
DI-615
DI-573
BR-40
ABS warning light abnormal1. ABS warning light circuit
2. Skid control ECUDI-627
IN-36
DTC check cannot be done
Only when 1. to 4. are all normal and the problem is still
occurring, replace the skid control ECU.
1. ABS warning light circuit
2. VSC OFF indicator light, center diff. lock indicator switch
circuit
3. Center diff. lock indicator switch circuit
4. Tc terminal circuit
DI-627
DI-645
DI-612
DI-651
Speed sensor signal check cannot be done1. Ts terminal circuit
2. Skid control ECUDI-653
IN-36
TRAC does not operate
Only when 1. to 4. are all normal and the problem is still
occurring, replace the skid control ECU.
1. Check the DTC, reconfirming that the normal code is
output.
2. IG power source circuit
3. Check the hydraulic circuit for leakage.
4. Speed sensor circuit
DI-505
DI-558
DI-655
DI-615
VSC does not operate
Only when 1. to 7. are all normal and the problem is still
occurring, replace the skid control ECU.
1. Check the DTC, reconfirming that the normal code is
output.
2. IG power source circuit
3. Check the hydraulic circuit for leakage.
4. Speed sensor circuit
5. Deceleration sensor circuit
6. Yaw rate sensor circuit
7. Steering angle sensor circuit
DI-505
DI-558
DI-655
DI-615
DI-570
DI-553
DI-605
Page 923 of 3115
DIC2Y-01
DI-402
- DIAGNOSTICSAUTOMATIC TRANSMISSION
595 Author: Date:
2004 LAND CRUISER (RM1071U)
CIRCUIT INSPECTION
DTC P0705 Transmission Range Sensor Circuit Mal-
function (PRNDL Input)
DTC P0850 Park/Neutral Switch Input Circuit
CIRCUIT DESCRIPTION
The park/neutral position switch detects the shift lever position and sends signals to the ECM.
DTC No.DTC Detection ConditionTrouble Area
P0705
(2-trip detection logic)
All switches are OFF simultaneously for P, R, N, D, 3 and 2
positions.
2 or more switches are ON simultaneously for P, R, N, (D 4),
3 and (2 L) positions.
Short in park/neutral position switch circuit
P k/ t l iti it h
P0850
Park/neutral position switch remaines ON (P, N position) during
driving under conditions (a) and (b) for 30 sec. (2-trip detection
logic)
(a) Vehicle speed: 70 km/h (44 mph) or more
(b) Engine speed: 1,500 - 2,500 rpmPark/neutral position switch
ECM
MONITOR DESCRIPTION
The park/neutral position switch detects the shift lever position and sends a signal to the ECM.
For security, the park/neutral position switch detects the shift lever position so that engine can be started
only when the vehicle is in P or N shift position.
When the park/neutral position switch sends more than one signal at a time from switch positions P, R, N
or D, the ECM interprets this as a fault in the switch. The ECM will turn on the MIL and store the DTC.
MONITOR STRATEGY
P0705:
Related DTCsP0705Park/neutral position switch/Verify switch input
Required sensors/ComponentsPark/neutral position switch
Frequency of operationContinuous
DtiCondition (A), (B) and (D)2 sec.DurationCondition (C)60 sec.
MIL operation2 driving cycle
Sequence of operationNone