tp sensor TOYOTA LAND CRUISER 1996 J80 Workshop Manual

D00076
Line
PressureDrain
Q08219
Q08226
D00087
(+)
(−)
(+)(−)
Air
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−161
1996 LAND CRUISER (RM451U)
DTC P0770 Shift Solenoid E Malfunction
(Shift Solenoid Valve SL)
SYSTEM DESCRIPTION
The ECM uses the signals from the throttle position sensor, air −
flow meter and crankshaft position sensor to monitor the en-
gagement condition of the lock −up clutch.
Then the ECM compares the engagement condition of the
lock−up clutch with the lock −up schedule in the ECM memory
to detect mechanical trouble of the shift solenoid valve SL,
valve body and torque converter clutch.
DTC No.DTC Detecting ConditionTrouble Area
P0770
Lock− up does not occur when driving in the lock− up range
(normal driving at 80 km/h [50 mph] ), or lock− up remains ON
in the lock− up OFF range (2 trip detection logic)Shift solenoid valve SL is stuck open or closed
 Valve body blocked up or stuck
 Lock− up clutch
INSPECTION PROCEDURE
1 Check shift solenoid valve SL operation.
PREPARATION:
Remove the shift solenoid valve SL from the valve body.
CHECK:
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
check that the solenoid valve opens.
(b) When battery voltage is supplied to the shift solenoid
valve, check it does not leak air.
NG Replace shift solenoid valve SL.
OK
DI5KQ−02
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Q07352 AT5605D00084
Rotor
No. 2 Vehicle Speed Sensor Rotor
No. 2 Vehicle Speed Sensor
AT8761
5 V/div.
0 V
2 msec./div.
DI−166
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
DTC P1700 Speed Sensor No. 2 Circuit Malfunction
(No. 2 Vehicle Speed Sensor)
CIRCUIT DESCRIPTION
The No. 2 vehicle speed sensor detects the rotation speed of the transmissi\
on output shaft and sends sig-
nals to the ECM. The ECM determines the vehicle speed based on these signals\
.
An AC voltage is generated in the No. 2 vehicle speed sensor coil as the r\
otor mounted on the output shaft
rotates, and this voltage is sent to the ECM.
The gear shift point and lock −up timing are controlled by the ECM based on the signals from this vehic\
le
speed sensor and the throttle position sensor signal.
If the No. 2 vehicle speed sensor malfunctions, the ECM uses input signa\
ls from the No. 1 vehicle speed
sensor as a back −up signal.
DTC No.DTC Detecting ConditionTrouble Area
P1700
All conditions below are detected 500 times or more continu-
ously (2 trip detection logic)
(a) No signal from No. 2 vehicle speed sensor is input to ECM while 4 pulses of No. 1 vehicle speed sensor signal is sent
(b) Vehicle speed: 9 km/h (5.6 mph) or more for as least 4 sec.
(c) Park/neutral position switch: OFF (Other than P or N posi-
tion)
(d) Transfer position: Other than N position
 Open or short in No. 2 vehicle speed sensor circuit
 No. 2 vehicle speed sensor
 ECM
Reference:
Waveform between terminals SP2
+ and SP2− when the vehicle
speed is approx. 60 km/h (37 mph).
DI5KW−02
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Q07465
SP2−
1
2E6
ECM
No. 2 Vehicle Speed Sensor SP2
+
4
EC2
5
V
V−G EC2 E682
V
V−G
Q08227
SP2+SP2−
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−167
1996 LAND CRUISER (RM451U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check vehicle speed value or resistance between terminals SP2+ and SP2− of
ECM.
When using OBD II scan tool or T OYOTA hand−held tester:
PREPARATION:
(a) Remove the fuse box cover.
(b) Connect an OBD II scan tool or TOYOTA hand− held tes-
ter to the DLC3.
(c) Start the engine and turn the OBD II scan tool or T OYOTA
hand −held tester main switch ON.
CHECK:
Drive the vehicle and read vehicle speed value.
OK:
Vehicle speed matches tester speed value.
When not using OBD II scan tool or TOYOTA hand−held tes-
ter:
PREPARATION:
Disconnect the connector from the ECM.
CHECK:
Check the resistance between terminals SP2+ and SP2− of the
ECM.
OK:
Resistance: 560 − 680 Ω
OK Check and replace ECM.
NG
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Q08218D00179
DI−168
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
2 Check No. 2 vehicle speed sensor.
PREPARATION:
Remove the No. 2 vehicle speed sensor from the transmission.
CHECK:
(a) Measure the resistance between terminals 1 and 2 of the
vehicle speed sensor.
(b) Check the voltage between terminals 1 and 2 of the ve- hicle speed sensor when a magnet is put close to the front
end of the vehicle speed sensor then taken away quickly.
OK:
(a) Resistance: 560 − 680 Ω
(b) Voltage is generated intermittently.
HINT:
The generated voltage is extremely low.
NG Replace No. 2 vehicle speed sensor.
OK
Check and repair harness and connector be-
tween ECM and No. 2 vehicle speed sensor
(See page IN−28 ).
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Q08584
ECM
Pattern Select Switch*
(PWR Mode Switch)
PWR
E7
P−B
B−W
PWR Indicator Light
(Combination Meter)
ID2
63
C12
13
16
20
15
B
J6
EGU−IG
Fuse Block
Ignition Switch
EA2
AM1
IG1
Fuse Block
AM1
P−B
P−B
6 B
B B ID2
B−W
B−W
3
1
B−Y
2
4
222
1 FL AM1
F6
Battery
2
2
3
4
WB −L
R/B No. 2
R/B No. 2
Pattern Select Switch (PWR Mode Switch)
When the PWR mode switch is pushed in, the switch is contacted and
the PWR mode is celected.
To cancel the PWR mode, push the PWR mode switch onec again.
*:
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−179
1996 LAND CRUISER (RM451U)
Pattern Select Switch Circuit (PWR Mode Switch)
CIRCUIT DESCRIPTION
The ECM memory contains the shift programs for the NORMAL and POWER pattern\
s, 2 position, L position
and the lock −up patterns. Following the programs corresponding to the signals from th\
e pattern select
switch, the park/neutral position switch and other various sensors, the ECM swi\
tches the solenoid valves
ON and OFF, and control the transmission gear change and the lock −up clutch operation.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check operation of PWR indicator light.
PREPARATION:
Check if the PWR indicator light normally when the PWR mode switch is set to NORM and PWR position.
NG Check and repair PWR indicator light.
OK
DI5L6−03
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DI5LT−02
Vehicle Brought to Workshop
Customer Problem Analysis
P. DI−189
Check and Clear DTC (Pre−check)
P.
DI−190
Items inside are titles of pages in this manual,
with the page number in the bottom portion. See
the indicated pages for detailed explanations.
Problem Symptom ConfirmationSymptom Simulation
P. IN−18

Symptom
does not occur
Symptom
occurs
DTC Check
P. DI−190
Sensor CheckCircuit Inspection
P. DI−201 − DI−235
DTC Chart
P. DI−196
Malfunction codeProblem Symptoms Table
P. DI−200
Check for Fluid Leakage
P. DI−237
Identification of Problem
Normal code
Repair
Confirmation Test
End
1
2
3
4
5
6 7
8 9
10 11 Step 8: Diagnostic steps permitting the use of the
TOYOTA hand−held tester or TOYOTA
breake −out−box.
DI−188
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
355
Author: Date:
1996 LAND CRUISER (RM451U)
ANTI−LOCK BRAKE SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshoooting in accordance with the procedure on the following pages.
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N09348
Interface BoxHarness VehicleTOYOTA
Tester
Hand
−held
TOYOTA Break −out− box
F00007
DLC1
Ts Tc
E
1
BR3904
0.25 sec. 0.25 sec.
ON
OFF
DI−192
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
(d) Using TOYOTA break −out− box and TOYOTA hand− held
tester, measure the ECU terminal values.
(1) Hook up the T OYOTA hand−held tester and TOYO-
TA break−out−box to the vehicle.
(2) Read the ECU input/output values by following the prompts on the tester screen.
HINT:
TOYOTA hand −held tester has a ”Snapshot ” function. This re-
cords the measured values and is effective in the diagnosis of
intermittent problems.
Please refer to the TOYOTA hand−held tester/TOYOTA break
out−box operators manual for further details.
2. SPEED SENSOR SIGNAL AND DECELERATION SEN-
SOR CHECK
(a) Check the speed sensor signal. (1) Conform that the center differential is free.
(2) Turn the ignition switch OFF.
(3) Using SST, connect terminals Ts and E
1 of the
DLC1.
SST 09843−18020
(4) Start the engine.
(5) Check that the ABS warning light blinks.
HINT:
If the ABS warning light does not blink, inspect the ABS warning
light circuit (See page DI−230).
(6) Drive vehicle straight forward.
HINT:
Drive vehicle faster than 45 km/h (28 mph) for several seconds.
(7) Stop the vehicle.
(8) Using SST, connect terminals Tc and E
1 of the
DLC1.
SST 09843−18020
(9) Read the number of blinks of the ABS warning light.
HINT:
See the list of DTC on page DI−190 .
If every sensor is normal, a normal code is output (A cycle of
0.25 sec. ON and 0.25 sec. OFF is repeated).
If 2 or more malfunction are indicated at the same time, the low-
est numbered code will be displayed 1st.
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BR3893
Malfunction Code (Example Code 72, 76)
72 6
7
ON
OFF
0.5 sec.
0.5 sec.
0.5 sec.
0.5 sec. 1.5 sec.
2.5 sec. 4 sec.
Repeat
F00007
E1
Ts
DLC1
R05599
0.13 sec.
0.13 sec.
3 sec.
ON
OFF
R05037
860 
30 mm
33.86  1.18 in.
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−193
1996 LAND CRUISER (RM451U)
(10) After doing the check, disconnect terminals Ts and
E
1, Tc and E1 of the DLC1, and turn the ignition
switch OFF.
(b) Deceleration sensor detection point check. (1) Confirm that the center differential is free.
(2) Turn the ignition switch OFF.
(3) Using SST, connect terminals Ts and E
1 of the
DLC1.
SST 09843−18020
(4) Start the engine.
(5) Check that the ABS warning light blinks.
HINT:
If the ABS warning light does not blink, inspect the ABS warning
light circuit (See page DI−230).
(6) Jack up the rear side of the vehicle slowly.
HINT:
When measuring the height, measure at the center of the lower
body of the vehicle. (7) Check that the warning light blinks.
If the warning light turns on, inspect the deceleration sensor
installation. If the sensor installation is OK, replace the decel-
eration sensor. (8) Jack down the vehicle slowly.
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R05038
780  30 mm
30.71  1.18 in.
BR1865
0.13 sec.
0.13 sec.
ON
OFF
R05596
0.13 sec.
Braking
0.13 sec.
R05597
0.13 sec. 0.13 sec.
Braking
DI−194
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
(9) Jack up the front side of the vehicle slowly, as
shown.
HINT:
When measuring the height, measure at the center of the lower
body of the vehicle. (10) Check that the warning light blinks.
If the warning light turns on, inspect the deceleration sensor
installation. If the sensor installation is OK, replace the decel-
eration sensor.
(11) Jack down the vehicle slowly.
(c) Deceleration sensor operation check. (1) Drive the vehicle straight ahead at about 20 km/h
(12.4 mph) or more, lightly depress the brake pedal.
(2) Check that there is no change in the warning light pattern.
(3) Drive the vehicle straight ahead at about 20 km/h (12.4 mph) or more, and depress the brake pedal
moderately.
(4) Check that the warning light turns on while braking.
(5) Drive the vehicle straight ahead at about 20 km/h (12.4 mph) or more, and depress the brake pedal
strongly.
(6) Check that the warning light pattern changes while braking, as shown.
If the operation is not as specified, inspect the deceleration sen-
sor installation. If the sensor installation is OK, replace the de-
celeration sensor. (7) Stop the vehicle and turn the ignition switch OFF.
(8) Remove SST from the terminals Ts and E
1 of the
DLC1.
SST 09843−18020
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−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−195
1996 LAND CRUISER (RM451U)
(d) Check the DTC of speed sensor function.
Code No.DiagnosisTrouble Area
71Low output voltage of right front speed sensor
Right front speed sensor
 Sensor installation
 Sensor rotor
 Sensor wire harness
72Low output voltage of left front speed sensor
Left front speed sensor
 Sensor installation
 Sensor rotor
 Sensor wire harness
73Low output voltage of right rear speed sensor
Right rear speed sensor
 Sensor installation
 Sensor rotor
 Sensor wire harness
74Low output voltage of left rear speed sensor
Left rear speed sensor
 Sensor installation
 Sensor rotor
 Sensor wire harness
75Abnormal change in output voltage of right front speed sen-
sorRight front speed sensor rotor
 Sensor wire harness
76Abnormal change in output voltage of left front speed sen-
sorLeft front speed sensor rotor
 Sensor wire harness
77Abnormal change in output voltage of right rear speed sen-
sorRight rear speed sensor rotor
 Sensor wire harness
78Abnormal change in output voltage of left rear speed sensorLeft rear speed sensor rotor
 Sensor wire harness
79Deceleration sensor is faultyDeceleration sensor
 Sensor installation
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