1996 TOYOTA LAND CRUISER Throttle position

BE6653A00499A00488
Throttle Position Sensor
4
3
2
11
11
9
10
E5
E5
E5 E5
VTA
ECM
VCC IDL1
E2 E112V
5V
ON
BE6653
A00496 A00498
A00489
4
3
2
11
11
9
10
E5
E5
E5 E5
VTA1
ECM
VCC IDL1
E2 12V
5V
ON
Throttle Position
Sensor
E5 Connector
−
DIAGNOSTICS ENGINE
DI−95
1996 LAND CRUISER (RM451U)
4 Check for short in harness or ECM.
PREPARATION:
(a) Disconnect throttle position sensor connector.
(b) Turn ignition switch ON.
CHECK:
Read CTP switch signal on TOYOTA hand −held tester.
OK:
CTP switch signal: OFF
OK Confirm good connection at sensor. If OK, replace throttle position sensor.
NG
5 Check for short in harness or ECM.
PREPARATION:
(a) Remove instrument panel speaker No.1 panel (See page SF−65 ).
(b) Disconnect E5 connector of ECM.
HINT:
Throttle position sensor connector is disconnected.
(c) Turn ignition switch ON.
CHECK:
Read CTP switch signal on TOYOTA hand −held tester.
OK:
CTP switch signal: OFF
OK Short in harness between ECM and throttle position sensor, repair or replace harness.
NG
Confirm connection at ECM.
If OK, replace ECM (See page IN−28).
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A00492
43
2
11
11
9
10
E5
E5
E5 E5
VTA
ECM
VCC
IDL
E2E1 12V
5V
ON
Throttle Position Sensor
DI−96
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
OBD II scan tool (excluding TOYOTA hand −held tester)
1 Check for open and short in harness or ECM.
PREPARATION:
(a) Disconnect throttle position sensor connector.
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminals 1 and 2 of throttle position
sensor connector.
OK:
Voltage: 9 − 14 V
OK Confirm good connection at sensor. If OK, replace throttle position sensor.
NG
2 Check for open and short in harness and connector between throttle posit\
ion sensor and ECM (See page IN−28).
NG Open or short in harness between ECM and
throttle position sensor.
OK
Confirm connection at ECM.
If OK, replace ECM (See page IN−28).
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Q08634
TOYOTA Hand−held Tester
DLC3
FI3605
ON
OFF 0.13 sec.
Flashing
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−133
1996 LAND CRUISER (RM451U)
(4) Use the OBD II scan tool or TOYOTA hand−held
tester to check the DTCs and freeze frame data.
Note them down (For operating instructions, see
the OBD II scan tool’s instruction book).
(5) See page DI−143 to confirm the details of the
DTCs.
NOTICE:
When simulating symptoms with an OBD II scan tool (ex-
cluding TOYOTA hand −held tester) to check the DTCs, use
the normal mode. For codes on the DTC chart subject to ”2
trip detection logic”, turn the ignition switch off after the
symptoms have been simulated for the 1st time. Them re-
peat the simulation process again. When the program has
been simulated twice, the MIL lights up and the DTCs are
recorded in the ECM.
3. Check Mode: INSPECT DIAGNOSIS
HINT:
TOYOTA hand−held tester only:
Compared to the normal mode, the check mode has high sens-
ing ability to detect malfunctions. Furthermore, the same diag-
nostic items which are detected in the normal mode can also be
detected in check mode.
(a) Check the DTC. (1) Check the initial conditions.
Battery positive voltage 11 V or more.
Throttle valve fully closed.
Transmission in P position.
Air conditioning switched off.
(2) Turn the ignition switch OFF.
(3) Prepare the TOYOTA hand−held tester.
(4) Connect the TOYOTA hand− held tester to the
DLC3 in the fuse box at the lower left of the instru-
ment panel.
(5) Turn the ignition switch ON and switch the T OYOTA
hand −held tester ON.
(6) Switch the TOYOTA hand −held tester from the nor-
mal mode to the check mode (Check that the MIL
flashes).
(7) Start the engine (The MIL goes).
(8) Simulate the conditions of the malfunction de- scribed by the customer.
NOTICE:
Leave the ignition switch ON until you have checked the
DTCs etc.
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−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−135
1996 LAND CRUISER (RM451U)
HINT:
If your display shows ”UNABLE TO CONNECT TO VEHICLE”
when you have connected the cable of the OBD II scan tool or
TOYOTA hand−held tester to the DLC3, turned the ignition
switch ON and operated the scan tool, there is a problem on the
vehicle side or tool side.
If communication is normal when the tool is connected to
another vehicle, inspect the DLC3 on the original vehicle.
If communication is still not possible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool’s instruction manual.
4. CHECK FOR INTERMITTENT PROBLEMS
TOYOTA hand−held tester only:
By putting the vehicle’s ECM in the check mode, 1 trip detection logic is possible instead of 2\
trip detection
logic and sensitivity to detect open circuits is increased. This makes it easier t\
o detect intermittent problems.
(1) Clear the DTC (See step 3).
(2) Set the check mode (See step 3).
(3) Do a simulation test (See page IN−18).
(4) Check the cnnector connection and terminal (See page IN−28).
(5) Visual check and contact pressure (See page IN−28).
(6) Handle the connector (See page IN−28).
5. ROAD TEST
NOTICE:
Perform the test at normal operating ATF temperature 50 − 80°C (122 − 176° F).
(a) D position test in NORM and PWR pattern positions. Shift into the D position and hold the accelerator pedal constant at the full\
throttle valve opening posi-
tion and check the following:
HINT:
When the 2nd start switch in on, there is no 1 → 2 up−shift and 2 →1 down−shift.
(1) 1 →2, 2 → 3 and 3 → O/D up−shift takes place, and shift point should conform to those shown
in the automatic shift schedule. Conduct a test under both Normal and Powe\
r patterns.
HINT:
There is no O/D up−shift or lock−up when the coolant temperature is below 55 °C (131°F ).
Evaluation:
If there is no 1 → 2 up−shift:
Shift solenoid valve No. 2 is stuck.
1−2 shift valve is stuck.
If there is no 2 → 3 up−shift:
Shift solenoid valve No. 1 is stuck.
2−3 shift valve is stuck.
If there is no 3 → O/D up−shift:
3−4 shift valve is stuck.
If the shift point is defective:
Throttle valve, 1−2 shift valve, 2−3 shift valve, 3−4 shift valve etc., are defective.
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DI−136
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
If the lock−up is defective:
Lock−up solenoid is stuck.
Lock−up control valve is stuck.
Lock−up signal value is stuck.
(2) In the same way, check the shock and slip at the 1 → 2, 2 →3 and 3 → O/D up−shift.
Evaluation:
If the shock is excessive:
Line pressure is too high.
Accumulator is defective.
Check ball is defective. (3) Run at the D position lock −up or O/D gear and check for abnormal noise and vibration.
HINT:
The check for the cause of abnormal noises and vibration must be made with \
extreme care as it could also
be due to loss of balance in the propeller shaft, differential, torque converter clutch, etc.
(4) While running in the D position, 2nd, 3rd and O/D gears, check to see that the\
possible kick −down
vehicle speed limits for 2 →1, 3 → 2 and O/D →3 kick−downs conform to those indicated on
the automatic shift schedule.
(5) Check for abnormal shock and slip at kick −down.
(6) Check for the lock −up mechanism.
Drive in D position, O/D gear, at a steady speed (lock −up ON) of about 95 km/h (59 mph).
Lightly depress the accelerator pedal and check that the engine RPM does not change
abruptly.
If there is a big jump in engine RPM, there is no lock −up.
(b) 2 position test. Shift into the 2 position and, while driving with the accelerator pedal held \
constantly at the full throttle
valve opening position, push in one of the pattern selectors and check the fo\
llowing points:
HINT:
When the 2nd start switch is on, there is no 1 → 2 up−shift and 2 →1 down−shift.
(1) Check to see that the 1 → 2 up− shift takes place and that the shift point conforms to the automatic
shift schedule.
HINT:
There is no O/D up−shift and lock−up in the 2 position. (2) While running in the 2 position and 2nd ge ar, release the accelerator pedal and check the engine
braking effect.
Evaluation:
If there is no engine braking effect:
2nd coast brake is defective. (3) Check for abnormal noise at acceleration and deceleration, and for shock at up −shift and down −
shift.
(c) L position test. (1) While running in the L position, check to see that there is no up −shift to 2nd gear.
(2) While running in the L position, release the accelerator pedal and check the engine braking ef- fect.
Evaluation:
If there is no engine braking effect:
1stand reverse brake is defective. (3) Check for abnormal noise during acceleration and deceleration.
(d) R position test. Shift into the R position and fully depress the accelerator pedal and ch\
eck for slipping.
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Q07308
AT3417
OK if hot
Add if hot
AT4252
0 − 1 mm
Q07309
DI−138
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
(3) With the engine OFF, add new fluid through the oil
filler pipe.
Fluid type: ATF DEXRON ®II
Capacity:
Dry fill: 11.0 liters (11.6 US qts, 9.7 Imp. qts)
Drain and refill: 1.9 liters (2.0 US qts, 1.7 Imp. qts)
(4) Start the engine and shift the shift lever into all posi-
tions from P to L position and then shift into P posi-
tion.
(5) With the engine idling, check the fluid level. Add fluid up to the COOL level on the dipstick.
(6) Check the fluid level at the normal operating tem- perature 70 − 80° C (158 − 176°F) and add as nec-
essary.
NOTICE:
Do not overfill.
(d) Check the fluid leaks.
Check for leaks in the transmission.
If there are leaks, it is necessary to repair or replace O −rings,
Seal packings, oil seals, plugs or other parts.
(e) Inspect and adjust the throttle cable. (1) Check that the throttle valve is fully closed.
(2) Check that the inner cable is not slack.
(3) Measure the distance between the outer cable endand stopper on the cable.
Standard distance: 0 − 1 mm (0 − 0.04 in.)
If the distance is not standard, adjust the cable by the adjusting
nuts.
(f) Inspect and adjust the shift lever position. When shifting the shift lever from the N position to other
positions, check that the lever can be shifted smoothly
and accurately to each position and that the position indi-
cator correctly indicates the position.
If the indicator is not aligned with the correct position, carry out
the following adjustment procedures. (1) Loosen the nut on the control rod.
(2) Push the control rod fully rearward.
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−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−141
1996 LAND CRUISER (RM451U)
8. HYDRAULIC TEST
Measure the line pressure.
NOTICE:
Do the test at normal operation ATF temperature 50 − 80°C (122 − 176° F).
The line pressure test should always be carried out in pairs. One techni\
cian should observe
the conditions of wheels or wheel stoppers outside the vehicle while the ot\
her is doing the test.
Be careful to prevent SST’s hose from interfering with the exhaust pipe.
(1) Warm up the ATF.
(2) Remove the test plug on the transmission case right side and connect SST\
(See page AT−18
for the location to connect SST).
SST 09992 −00094 (09992 −00150, 09992−00270)
(3) Fully apply the parking brake and chock the 4 wheels.
(4) Start the engine and check idling speed.
(5) Keep your left foot pressed firmly on the brake pedal and shift into D p\
osition.
(6) Measure the line pressure when the engine is idling.
(7) Press the accelerator pedal all the way down. Quickly read the highest line pr\
essure when engine
speed reaches stall speed.
NOTICE:
Release the accelerator pedal and stop test if the rear wheels begin to rotate before the engine speed
reaches the specified stall speed.
(8) In the same manner, do the test in R position.
Specified line pressure:
Condition D position kPa (kgf/cm2, psi) R position kPa (kgf/cm2, psi)
Idling422 −
481 (4.3 − 4.9, 61 − 70)510 − 608 (5.2 − 6.2, 74 − 88)
Stall1,285 − 1,530 (13.1 − 15.6, 128 − 153)1,579 − 1,932 (16.1 − 19.7, 158 − 193)
If the measured pressures are not up to specified values, recheck the thro\
ttle cable adjustment and retest.
Evaluation:
ProblemPossible cause
If the measured value at all positions are higher
Throttle cable out of adjustment
 Throttle valve defective
 Regulator valve defective
If the measured value at all positions are lower
Throttle cable out of adjustment
 Throttle valve defective
 Regulator valve defective
 Oil pump defective
 O/D direct clutch defective
If pressure is low in the D position onlyD position circuit fluid leakage
 Forward clutch defective
If pressure is low in the R position only
R position circuit fluid leakage
 Direct clutch defective
 1st and reverse brake defective
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DI5KD−02
Q08236
No. 1 Vehicle
Speed Sensor
O/D OFF Indicator Light
MIL
Pattern Select Switch O/D Main Switch
DLC1
Shift Solenoid Valve SL
ECM
Stop Light Switch L4 Position Sensor
Park/Neutral Position Switch No. 2 Vehicle Speed Sensor
Shift Solenoid Valve No. 2
Shift Solenoid Valve No. 1
Engine Coolant Temperature Sensor
Throttle Position Sensor
ATF Temperature Sensor
DLC3
Transfer Neutral
Position Switch
DI−144
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
PARTS LOCATION
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