1998 TOYOTA LAND CRUISER engine oil

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

- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-397
590 Author
: Date
:
2004 LAND CRUISER (RM1071U) Shift point too high or too low
1. Shift solenoid valve (SLT) circuit *1
2. Speed sensor NT circuit *1
3. Speed sensor SP2 circuit *1
4. Throttle position sensor circuit *1
5. ATF temperature sensor circuit *1
6. Pattern select switch circuit (PWR mode switch)
7. Transfer L4 position switch circuit *1
8. ECM
DI-479
DI-418
DI-421
DI-36
DI-410
DI-495
DI-472
IN-36
Up-shift to 5th from 4th while shift lever is 4 position1. Transmission control switch circuit (D - 4) *1
2. ECM
DI-402
IN-36
Up-shift to 5th from 4th while engine is cold1. Engine coolant temp. sensor circuit *1
2. ECM
DI-36
IN-36
Up-shift to 4th from 3rd while shift lever is 3 position1. Park/neutral position switch circuit *1
2. ECM
DI-402
IN-36
Up-shift to 3rd from 2nd while shift lever is 2 position1. Park/neutral position switch circuit *1
2. ECM
DI-402
IN-36
Up-shift to 2nd from 1st while shift lever is L position1. Transmission control switch circuit (2 - L) *1
2. ECM
DI-402
IN-36
Harsh engagement (N " D)
1. Speed sensor NT circuit *1
2. Shift solenoid valve (SL1) circuit *1
3. Shift solenoid valve (SLT) circuit *1
4. ECM
DI-418
DI-426
DI-479
IN-36
Harsh engagement (Lock-up)
1. Speed sensor NT circuit *1
2. Speed sensor SP2 circuit *1
3. Shift solenoid valve (SLU) circuit *1
4. ECM
DI-418
DI-421
DI-491
IN-36
Harsh engagement (Any driving position)ECMIN-36
Poor acceleration1. ATF temperature sensor No.2 circuit *1
2. ECM
DI-483
IN-36
No engine brakingECMIN-36
No kick-downECMIN-36
Engine stalls when starting off or stoppingECMIN-36
No pattern select (PWR)1. Pattern select switch circuit (PWR mode switch)
2. ECMDI-495
IN-36
No 2nd start
1. Pattern select switch circuit (2nd start switch)
2. Transmission control switch circuit (2 - L) *1
3. ECM
DI-497
DI-402
IN-36
AT Oil Temp. warning light remains on*1Lock-up at 3rd gear1. ATF temperature sensor No.2 circuit *1
2 ECM
DI-483
IN 36Shift point too high2. ECMIN-36
A/T.P. indicator light does not light up
1. A/T.P. indicator light circuit
2. Combination meter circuit
3. ECMDI-500
BE-58
IN-36

- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-399
592 Author
: Date
:
2004 LAND CRUISER (RM1071U) Harsh engagement (4th " 5th)
1. Shift solenoid valve (SL1)
2. Shift solenoid valve (SL2)
3. Valve body assy
4. Off-vehicle repair matrix chartDI-441
DI-445
AT-8
-
Harsh engagement (5th " 4th)
1. Shift solenoid valve (SL1)
2. Shift solenoid valve (SL2)
3. Valve body assy
4. Off-vehicle repair matrix chartDI-441
DI-445
AT-8
-
Slip or shudder (Forward and reverse)
1. Transmission control rod
2. Valve body assy
3. Oil strainer
4. Off-vehicle repair matrix chartDI-361
AT-8
AT-8
-
No engine braking (1st: L position)1. Valve body assy
2. Off-vehicle repair matrix chartAT-8
-
No engine braking (2nd: 2 position)1. Valve body assy
2. Off-vehicle repair matrix chartAT-8
-
No kick-downValve body assyAT-8
Shift point too high or too low
1. Shift solenoid valve (SLT)
2. Shift solenoid valve (SL1)
3. Valve body assyDI-476
DI-441
AT-8
Poor acceleration1. Shift solenoid valve (SLT)
2. Valve body assyDI-476
AT-8
Engine stalls when starting off or stopping1. Shift solenoid valve (SLU)
2. Valve body assyDI-487
AT-8

- DIAGNOSTICSENGINE
DI-345
538 Author
: Date
:
2004 LAND CRUISER (RM1071U)
ECM Power Source Circuit
CIRCUIT DESCRIPTION
When the ignition switch is turned ON, battery positive voltage is applied to terminal IGSW of the ECM and
the EFI or ECD relay control circuit in the ECM sends a signal to terminal MREL of the ECM switching on
the EFI or ECD relay.
This signal causes current to flow to the coil, closing the contacts of the EFI or ECD relay and supplying pow-
er to terminal +B of the ECM.
DIB2X-02

A21043
Starter Relay EFI Relay
Circuit Opening
Relay
Fuel Pump RelayMREL
FPRTr2
Tr1 EFI
IGNECM
FC
NE Fuel Pump
Battery
StarterFuel Pump Resistor
AM2Ignition Switch
STA
Crankshaft Position
Sensor (NE Signal) DI-162
- DIAGNOSTICSENGINE
355 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC P0230 Fuel Pump Primary Circuit
CIRCUIT DESCRIPTION
In the diagram below, when the engine is cranked, current flows from terminal STAR of the ECM to the starter
relay coil and also current flows to terminal STA of the ECM (STA signal).
When the STA signal and NE signal are input to the ECM, the Tr1 is turned ON, current flows to the coil of
the circuit opening relay, the relay switches on, power is supplied to the fuel pump, and the fuel pump oper-
ates.
While the NE signal is generated (engine running), the ECM keeps the Tr1 ON (circuit opening relay ON)
and the fuel pump also keeps operating.
The fuel pump speed is controlled at two levels (high speed or low speed) by the condition of the engine
(starting, light load, heavy load). When the engine starts (STA ON), the Tr2 in the ECM is OFF, so the fuel
pump relay closes and battery positive voltage is applied directly to the fuel pump. The fuel pump operates
at high speed.
After the engine starts during idling or light loads, since the Tr2 goes ON, power is supplied to the fuel pump
via the fuel pump resistor. The fuel pump operates at low speed.
DIC2B-01

A19885
1.1 mm
- DIAGNOSTICSENGINE
DI-175
368 Author
: Date
:
2004 LAND CRUISER (RM1071U)
5 Check spark plug and spark of misfiring cylinder.
PREPARATION:
(a) Remove the ignition coil assembly.
(b) Remove the spark plug.
CHECK:
(a) Check the electrode for carbon deposits.
(b) Check the spark plug type (See page IG-1).
(c) Check electrode gap.
OK:
No large carbon deposit present.
Not wet with gasoline or oil.
Electrode gap: 1.0 to 1.3 mm (0.039 to 0.051 in.)
NOTICE:
If adjusting the gap of a new spark plug, bend only ºthe
base / groundº electrode. Do not touch the tip. Never at-
tempt to adjust the gap on a used plug.
PREPARATION:
(a) Install the spark plug to the ignition coil assembly.
(b) Disconnect the injector connector.
(c) Ground spark plug.
CHECK:
Check if spark occurs while engine is being cracked.
CAUTION:
Always disconnect each injector connector.
NOTICE:
Do not crank the engine for more than 2 seconds.
OK:
Spark occurs across electrode gap.
OK Go to step 8.
NG

A19431A19884
DI-176
- DIAGNOSTICSENGINE
369 Author
: Date
:
2004 LAND CRUISER (RM1071U)
6 Change normal spark plug and check spark of misfiring cylinder.
PREPARATION:
(a) Change to the normal spark plug.
(1) Remove the spark plug that may be faulty from the
ignition coil assembly.
(2) Install the spark plug to the ignition coil assembly.
(b) Disconnect the injector connector.
(c) Ground the spark plug.
CHECK:
Check if spark occurs while the engine is being cranked.
CAUTION:
Always disconnect each injector connector.
NOTICE:
Do not crank the engine for more than 2 seconds.
OK:
Spark jumps across electrode gap.
OK Replace spark plug.
NG

A21025
Wire Harness Side:
I1
I2
I3I4
I5I6
I7I8
Ignition Coil Connector
A21023
E5
IGF2
IGF1
ECM Connector
- DIAGNOSTICSENGINE
DI-177
370 Author
: Date
:
2004 LAND CRUISER (RM1071U)
7 Check for open and short in harness and connector between ignition coil and
ECM.
Check the harness and connector between the ignition coil
and the ECM (IGF terminal) connectors:
PREPARATION:
(a) Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil con-
nector.
(b) Disconnect the E5 ECM connector.
CHECK:
Check the resistance between the wire harness side connec-
tors.
OK:
Tester ConnectionSpecified Condition
Ignition coil (I1-2) - IGF1 (E5-24)Below 1 W
Ignition coil (I2-2) - IGF2 (E5-23)Below 1 W
Ignition coil (I3-2) - IGF1 (E5-24)Below 1 W
Ignition coil (I4-2) - IGF2 (E5-23)Below 1 W
Ignition coil (I5-2) - IGF1 (E5-24)Below 1 W
Ignition coil (I6-2) - IGF2 (E5-23)Below 1 W
Ignition coil (I7-2) - IGF1 (E5-24)Below 1 W
Ignition coil (I8-2) - IGF2 (E5-23)Below 1 W
Ignition coil (I1-2) or IGF1 (E5-24) -
Body ground10 kW or higher
Ignition coil (I2-2) or IGF2 (E5-23) -
Body ground10 kW or higher
Ignition coil (I3-2) or IGF1 (E5-24) -
Body ground10 kW or higher
Ignition coil (I4-2) or IGF2 (E5-23) -
Body ground10 kW or higher
Ignition coil (I5-2) or IGF1 (E5-24) -
Body ground10 kW or higher
Ignition coil (I6-2) or IGF2 (E5-23) -
Body ground10 kW or higher
Ignition coil (I7-2) or IGF1 (E5-24) -
Body ground10 kW or higher
Ignition coil (I8-2) or IGF2 (E5-23) -
Body ground10 kW or higher