1998 TOYOTA LAND CRUISER brake

DI-376
- DIAGNOSTICSAUTOMATIC TRANSMISSION
569 Author
: Date
:
14. MECHANICAL SYSTEM TESTS
(a) Measure the stall speed.
The object of this test is to check the overall performance of the transmission and engine by measuring
the stall speeds in the D and R positions.
NOTICE:

Do the test at normal operating fluid temperature 70 to 80 °C (158 to 176 °F).

Do not continuously run this test longer than 5 seconds.

To ensure safety, conduct this test in a wide, clear level area which provides good traction.

The stall test should always be carried out in pairs. One technician should observe the condi-
tions of wheels or wheel stoppers outside the vehicle while the other is doing the test.
(1) Chock all 4 wheels.
(2) Connect an OBD II scan tool or hand-held tester to DLC3.
(3) Fully apply the parking brake.
(4) Keep your left foot pressing firmly on the brake pedal.
(5) Start the engine.
(6) Shift into the D position. Press all the way down on the accelerator pedal with your right foot.
Quickly read the stall speed at this time.
Stall speed: 2,150 ± 150 rpm
(7) Do the same test in R position.
Stall speed: 2,150 ± 150 rpm
Evaluation:
ProblemPossible cause
(a) Engine stall speed low in D and R positions

Engine output may be insufficient

Stator one-way clutch is not operating properly
HINT: If the value is less than the specified value by 600 rpm or
more, the torque converter could be faulty.
(b) Engine stall speed high in D position

Line pressure too low

Clutch No. 1 (C
1) slipping

One-way clutch No.3 (F
3) not operating properly
(c) Engine stall speed high in R position

Line pressure too low

Brake No. 4 (B
4) slipping

Clutch No. 3 (C
3) slipping

One-way clutch No.1 (F
1) not operating properly
(d) Engine stall speed high in D and R positions
Line pressure too low

Improper fluid level

- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-377
570 Author
: Date
:
(b) Measure the time lag.
When the shift lever is shifted while the engine is idling, there will be a certain time lapse or lag before
the shock can be felt. This is used for checking the condition of the clutch and brake.
NOTICE:

Do the test at normal operating fluid temperature 70 to 80 °C (158 to 176 °F).

Be sure to allow 1 minute interval between tests.

Take 3 measurements and take the average value.
(1) Fully apply the parking brake.
(2) Start the engine and check idle speed.
Idle speed (In N position and air conditioner OFF): 700 ± 50 rpm.
(3) Shift the shift lever from N to D position. Using a stop watch, measure the time from when the
lever is shifted until the shock is felt.
Time lag:
N " D Less than 1.2 seconds
(4) In the same manner, measure the time lag for N " R.
Time lag:
N " R Less than 1.5 seconds
Evaluation (If N " D time or N " R time lag is longer than the specified):
ProblemPossible cause
N " D time lag is longer

Line pressure too low

Clutch No. 1 (C
1) worn

One-way clutch No.3 (F
3) not operating properly
N " R time lag is longer

Line pressure too low

Clutch No. 3 (C
3) worn

Brake No. 4 (B
4) worn

One-way clutch No.1 (F
1) not operating properly

D12745
SST
SST
DI-378
- DIAGNOSTICSAUTOMATIC TRANSMISSION
571 Author
: Date
:
15. HYDRAULIC TEST
Measure the line pressure.
NOTICE:

Do the test at normal operation fluid temperature 70
to 80°C (158 to 176°F).

The line pressure test should always be carried out in
pairs. One technician should observe the conditions
of wheels or wheel stoppers outside the vehicle while
the other is doing the test.

Be careful to prevent SST's hose from interfering with
the exhaust pipe.

This check must be conducted after checking and ad-
justing engine.

Perform under condition that A/C is OFF.

When conducting stall test, do not continue more
than 10 seconds.
(1) Warm up the ATF.
(2) Remove the test plug on the transmission case cen-
ter right side and connect SST.
SST 09992-00095 (09992-00231, 09992-00271)
(3) Fully apply the parking brake and chock the 4
wheels.
(4) Start the engine and check idling speed.
(5) Keep your left foot pressing firmly on the brake ped-
al and shift into D position.
(6) Measure the line pressure when the engine is idling.
(7) Depress the accelerator pedal all the way down.
Quickly read the highest line pressure when engine
speed reaches stall speed.
(8) In the same manner, do the test in R position.
Specified line pressure:
ConditionD position kPa (kgf/cm2
, psi)R position kPa (kgf/cm2, psi)
Idling362 to 420 (3.7 to 4.2, 53 to 59)500 to 580 (5.1 to 5.9, 73 to 84)
Stall1,360 to 1,460 (13.8 to 14.9, 196 to 212)1,295 to 1,415 (13.2 to 14.4, 188 to 205)
Evaluation
ProblemPossible cause
If the measured value at all positions are higher
Shift solenoid valve SLT defective

Regulator valve defective
If the measured value at all positions are lower

Shift solenoid valve SLT defective

Regulator valve defective

Oil pump defective
If pressure is low in the D position only
D position circuit fluid leakage

Clutch No. 1 (C
1) defective
If pressure is low in the R position only

R position circuit fluid leakage

Clutch No. 3 (C
3) defective

Brake No. 4 (B
4) defective

DI-400
- DIAGNOSTICSAUTOMATIC TRANSMISSION
593 Author
: Date
:
2004 LAND CRUISER (RM1071U)
Chapter 3: Off-Vehicle Repair
(
: A750E, A750F AUTOMATIC TRANSMISSION Repair Manual Pub. No. RM999U)
SymptomSuspect AreaSee page
Vehicle does not move in any forward position and reverse posi-
tions1. Rear planetary gear unit
2. Torque converter clutch

AT-34
Vehicle does not move in R position
1. Brake No. 4 (B4)
2. Clutch No. 3 (C
3)
3. One-way clutch No.4 (F
1)






No up-shift (1st " 2nd)
1. Brake No. 3 (B3)
2. One-way clutch No.1 (F
1)
3. One-way clutch No. 2 (F
2)






No up-shift (2nd " 3rd)Clutch No. 3 (C3)

No up-shift (3rd " 4th)Clutch No. 2 (C2)

No up-shift (4th " 5th)1. Brake No. 1 (B1)
2. Clutch No. 1 (C
1)




No lock-up or No lock-up offTorque converter clutchAT-34
Harsh engagement (N " D)1. Clutch No. 1 (C1)
2. One-way clutch No.3 (F
3)




Harsh engagement (N " R)
1. Clutch No. 3 (C3)
2. Brake No. 4 (B
4)
3. One-way clutch No.1 (F
1)






Harsh engagement (1 " 2)
1. Brake No. 3 (B3)
2. One-way clutch No.1 (F
1)
3. One-way clutch No. 2 (F
2)






Harsh engagement (2 " 3)Clutch No. 3 (C3)

Harsh engagement (3 " 4)Clutch No. 2 (C2)

Harsh engagement (4 " 5th)1. Brake No. 1 (B1)
2. Clutch No. 1 (C
1)




Harsh engagement (Lock-up)Torque converter clutchAT-34
Slip or shudder (Forward and reverse: After warm-up)
1. One-way clutch No.1 (F1)
2. Clutch No. 3 (C
3)
3. Torque converter clutch clutch






Slip or shudder (Particular position: Just after engine starts)Torque converter clutchAT-34
Slip or shudder (R position)
1. Brake No. 4 (B4)
2. One-way clutch No.1 (F
1)
3. Clutch No. 3 (C
3)






Slip or shudder (1st)1. Clutch No. 1 (C1)
2. One-way clutch No.3 (F
3)




Slip or shudder (2nd)
1. Clutch No. 1 (C1)
2. Brake No. 3 (B
3)
3. One-way clutch No.1 (F
1)
4. One-way clutch No.2 (F
2)








Slip or shudder (3rd)
1. Clutch No. 1 (C1)
2. Clutch No. 3 (C
3)
3. One-way clutch No.1 (F
1)






Slip or shudder (4th)1. Clutch No. 1 (C1)
2. Clutch No. 2 (C
2)




Slip or shudder (5th)
1. Clutch No. 2 (C2)
2. Clutch No. 3 (C
3)
3. Brake No. 1 (B
1)






No engine braking (1st - 4th: D position)Clutch No. 1 (C1)

- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-401
594 Author
: Date
:
2004 LAND CRUISER (RM1071U) No engine braking (1st: L position)
Brake No. 4 (B4)

No engine braking (2nd: 2 position)Brake No. 2 (B2)

No engine braking (3rd: 3 position)Brake No. 1 (B1)

Poor acceleration (All positions)Torque converter clutchAT-34
Poor acceleration (5th)
1. Clutch No. 1 (C1)
2. Clutch No. 3 (C
3)
3. Brake No. 1 (B
1)
4. Front planetary gear unit








Engine stalls when starting off or stoppingTorque converter clutchAT-34

DIB31-02
A14471
E9E5E6E7E8 ECM Terminals
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-393
586 Author
: Date
:
2004 LAND CRUISER (RM1071U)
TERMINALS OF ECM
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
P (E9 6) E1 (E7 1)GW BRIG switch ON and shift lever P position10 to 14P (E9-6) - E1 (E7-1)G-W - BRIG switch ON and shift lever other than P positionBelow 1
N (E9 7) E1 (E7 1)GR BRIG switch ON and shift lever N position10 to 14N (E9-7) - E1 (E7-1)G-R - BRIG switch ON and shift lever other than N positionBelow 1
L4 (E8 4) E1 (E7 1)BL BRIG switch ON and Transfer shift lever L position9 to 14L4 (E8-4) - E1 (E7-1)B-L - BRIG switch ON and Transfer shift lever other than L positionBelow 1.5
SNWI (E8 5) E1 (E7 1)LR BRIG switch ON9 to 14SNWI (E8-5) - E1 (E7-1)L-R - BRIG switch ON and Press continuously 2nd start switchBelow 1
L (E8 8) E1 (E7 1)RL BRIG switch ON and shift lever L position9 to 14L (E8-8) - E1 (E7-1)R-L - BRIG switch ON and shift lever other than L positionBelow 1.5
2 (E8 9) E1 (E7 1)GB BRIG switch ON and shift lever 2 and L position9 to 142 (E8-9) - E1 (E7-1)G-B - BRIG switch ON and shift lever other than 2 and L positionBelow 1.5
D (E8 10) E1 (E7 1)GY BRIG switch ON and shift lever D and 4 position9 to 14D (E8-10) - E1 (E7-1)G-Y - BRIG switch ON and shift lever other than D and 4 positionBelow 1.5
R (E8 11) E1 (E7 1)RB BRIG switch ON and shift lever R position9 to 14R (E8-11) - E1 (E7-1)R-B - BRIG switch ON and shift lever other than R positionBelow 1.5
STP (E8 19) E1 (E7 1)GW BRBrake pedal is depressed7.5 to 14STP (E8-19) - E1 (E7-1)G-W - BRBrake pedal is releasedBelow 1.5
3 (E8 20) E1 (E7 1)GBRIG switch ON and shift lever 3 position9 to 143 (E8-20) - E1 (E7-1)G - BRIG switch ON and shift lever other than 3 positionBelow 1.5
4 (E8 23) E1 (E7 1)GR BRIG switch ON and shift lever 4 position9 to 144 (E8-23) - E1 (E7-1)G-R - BRIG switch ON and shift lever other than 4 positionBelow 1.5
PWR (E8 28) E1 (E7 1)LW BRIG switch ON and Pattern select switch º PWRº OFF9 to 14PWR (E8-28) - E1 (E7-1)L-W - BRIG switch ON and Pattern select switch ºPWRº ONBelow 1
TFN (E7 11) E1 (E7 1)YG BRIG switch ON and Transfer shift lever N positionBelow 1.5TFN (E7-11) - E1 (E7-1)Y-G - BRIG switch ON and Transfer shift lever other than N position9 to 14
SLU+ (E7-16) - SLU- (E7-15)P-G - BEngine idle speedPulse generation 2
reference
IG switch ONBelow 1.5
S2 (E6-10) - E1 (E7-1)W - BR2nd or 3rd gear9 to 14S2 (E6 10) E1 (E7 1)W BR
1st, 4th or 5th gearBelow 1.5
IG switch ON9 to 14
S1 (E6-11) - E1 (E7-1)R - BR1st or 2nd gear9 to 14S1 (E6 11) E1 (E7 1)R BR
3rd, 4th or 5th gearBelow 1.5

- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-993
1186 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC P0571/52 Brake Switch ºAº Circuit
CIRCUIT DESCRIPTION
When the brake pedal is depressed, the stop light switch sends a signal to the ECM. When the ECM receives
this signal, it cancels the cruise control.
A fail-safe function is provided so that the cancel functions normally, even if there is a malfunction in the stop
light signal circuit.
The cancel condition is that battery positive voltage is supplied to terminal STP.
When the brake is on, battery positive voltage is normally applied through the STOP fuse and stop light
switch to terminal STP of the ECM, and the ECM turns the cruise control OFF.
If the harness connected to terminal STP has an open circuit, terminal STP will have battery positive voltage
and the cruise control will be turned OFF.
DTC No.Detection ItemTrouble Area
P0571/52Stop light switch circuit.

Stop light switch

Harness or connector between ECM and stop light switch
circuit

ECM
DIB6A-01

- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-995
1188 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
HINT:
In case of using the hand-held tester, start the inspection from step 1 and in case of not using the hand-held
tester, start from step 2.
1 Check stop light switch using hand-held tester.
PREPARATION:
Connect the hand-held tester to the DLC3.
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand-held tester main SW ON.
CHECK:
Select the item ºSTOP LIGHT SWº in the DATA LIST and read its valve displayed.
OK:
Brake pedal depressed: ON
Brake pedal released: OFF
OK Proceed to next circuit inspection shown in
problem symptom table (See page DI-991).
NG
2 Check operation of stop light.
CHECK:
Check that stop light comes on when brake pedal is depressed, and turns off when brake pedal is released.
NG Check stop light system (See page BE-49).
OK