TOYOTA LAND CRUISER 1998 Factory Repair Manual

DI-490
- DIAGNOSTICSAUTOMATIC TRANSMISSION
683 Author
: Date
:
2004 LAND CRUISER (RM1071U)
2 Check valve body (See page DI-396).
NG Replace the valve body (See page AT-8).
OK
3 Check torque converter clutch (See page AT-34).
OK Repair or replace transmission (See page
AT-30).
NG
Replace the torque converter clutch
(See page AT-30).

Current flow to solenoid
Lock-up
Operation
Pressure
BE4056D00160
1 cycle ON
OFFDuty Ratio
=
A + B
A
y 100 (%) (*)
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-491
684 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC P2759Torque Converter Clutch Pressure Control Solenoid
Control Circuit Electrical(Shift Solenoid Valve SLU)
CIRCUIT DESCRIPTION
The amount of current flow to the solenoid is controlled by the
(*) duty ratio of the ECM output signal. The higher the duty ratio
becomes, the higher the lock-up hydraulic pressure becomes
during the lock-up operation.
(*) Duty Ratio
The duty ratio is the ratio of the period of continuity in one cycle.
For example, if A is the period of continuity in one cycle, and B
is the period of non-continuity, then
DTC No.DTC detection conditionTrouble Area
P2759
The following condition is detected. (1-trip detection logic)
SLU output signal's duty ON of 3.3 msec. or more with duty
ratio of least 95% lasts for 1 second.
Open or short in shift solenoid valve SLU circuit

Shift solenoid valve SLU

ECM
MONITOR DESCRIPTION
The ECM controls the oil pressure to the lock-up clutch based on engine-load information from the throttle
position sensor, crankshaft position sensor, input speed sensor, and the oil pressure sensor for shift-sole-
noid SLU. The ECM commands the shift-solenoid SLU using a duty-cycle control signal. In turn, the shift
solenoid operates the lock-up control valve and cause lock-up or flexible lock-up of the torque converter
clutch. The ECM illuminates the MIL and store the DTC when ECM detects an open or a short circuit malfunc-
tion in the shift solenoid valve SLU.
MONITOR STRATEGY
Related DTCsP2759Shift solenoid valve SLU/Range check
Required sensors/ComponentsShift solenoid valve SLU
Frequency of operationContinuous
Duration1 sec.
MIL operationImmediate
Sequence of operationNone
DIB3M-02

D12762
E1
Electronically Controlled
Transmission SolenoidECM
16 2
EB2 E7
SLU
-
P-G
B 215SLU+LG
EB3E7 P-G
B BRSLU+
SLU- 513 DI-492
- DIAGNOSTICSAUTOMATIC TRANSMISSION
685 Author
: Date
:
2004 LAND CRUISER (RM1071U)
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
Battery voltage10 V or more-
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Output signal duty100%
COMPONENT OPERATING RANGE
ParameterStandard value
Output signal dutyLess than 100%
WIRING DIAGRAM

1
152 3 4 5 6 7 8
9 10 11 12
13 14
D11994SLU+
SLU-
D12791SLU+SLU-
E5E6E7E8E9
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-493
686 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check transmission wire.
PREPARATION:
Disconnect the transmission wire connector.
CHECK:
Measure resistance between SLU+ and SLU- of transmission
wire.
OK:
Resistance: 5.0 to 5.6 W at 20°C (68°F)
CHECK:
Measure resistance between terminals SLU+ and SLU- of the
transmission wire connector and body ground.
OK:
Resistance: 1 MW or higher
NG Go to step 3.
OK
2 Measure resistance between terminal SLU+ and SLU- of ECM connector.
PREPARATION:
(a) Connect the transmission wire connector.
(b) Disconnect the connector of the ECM.
CHECK:
Measure resistance between terminals SLU+ and SLU- of ECM
connector.
OK:
Resistance: 5.0 to 5.6 W at 20°C (68°F)
CHECK:
Measure resistance between terminals SLU+ and SLU- of the
ECM connector and body ground.
OK:
Resistance: 1 MW or higher
NG Repair or replace the harness or connector
(See page IN-36).
OK
Check and replace the ECM (See page
IN-36).

D12795
12
(-)(+)
12
DI-494
- DIAGNOSTICSAUTOMATIC TRANSMISSION
687 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3 Check shift solenoid valve SLU.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve SLU.
CHECK:
(a) Measure the resistance between terminals 1 and 2 of so-
lenoid connector.
Standard: 5.0 to 5.6 W at 20°C (68°F)
(b) Connect the positive (+) lead with an 21 W bulb to terminal
2 of solenoid connector and negative (-) lead to terminal
1 of the solenoid valve connector, then check the move-
ment of the valve.
Standard: Solenoid sounds operation noise.
OK:
Standard

NG Replace the shift solenoid valve SLU
(See page AT-8).
OK
Repair or replace the transmission wire
(See page AT-6).

D12771
ECM
PWR E829 J/B No.4
E4
(*) Electronically Controlled
Transmission Pattern Select SW
5
W-B
IF IU19
SB Combination Meter
C1519
Cowl Side J/B LH
L-R
1
2
3
(*) Pattern Select Switch (PWR Mode Switch)
When the PWR mode switch is pushed in, the switch contact is made and the PWR mode is selected.
To cancel the PWR mode, push the PWR mode switch once again.C1520
SB312
4F 4C
W-BB
B
E8
E8
E818
28 2nd
PWR
5L-W 10
3M
3PCowl Side J/B RH
18
2E66 24
2E 2QP-B
SNWI MPX1 MPX2
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-495
688 Author
: Date
:
2004 LAND CRUISER (RM1071U)
Pattern Select Switch Circuit (PWR Mode Switch)
CIRCUIT DESCRIPTION
The ECM memory contains the shift programs for the NORMAL and POWER patterns, 2 position, L position
and the lock-up patterns. Following the programs corresponding to the signals from the pattern select
switch, the park/neutral position and other various sensors, the ECM switches the solenoid valves ON and
OFF, and controls the transmission gear change and the lock-up clutch operation.
WIRING DIAGRAM
DI3C5-07

D03045
53
D13411
PWR
E5E6E7E8E9
DI-496
- DIAGNOSTICSAUTOMATIC TRANSMISSION
689 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check pattern select switch (PWR mode switch).
PREPARATION:
Disconnect the pattern select switch connector.
CHECK:
Check continuity between terminals 3 and 5 of pattern select
switch connector when the select switch is set to PWR and
NORM positions.
OK:
Pattern select switchSpecified condition
PWRContinuity
NORMNo continuity
NG Replace the pattern select switch.
OK
2 Check harness and connector between terminal PWR of ECM and body ground.
PREPARATION:
(a) Connect the pattern select switch connector.
(b) Disconnect the connector of ECM.
CHECK:
Check continuity between terminal PWR of ECM and body
ground when the pattern select switch is set to the PWR (POW-
ER) position and NORM (NORMAL) position.
OK:
Pattern select switchSpecified condition
PWRContinuity
NORMNo Continuity
HINT:
The ECM uses the normal pattern signal if the PWR signal is not
input.
OK Proceed to next circuit inspection shown on
matrix chart (See page DI-396).
NG
Repair or replace harness or connector
(See page IN-36).

DI3BO-03
/ /
How Often Does
Problem Occur?/ /
Automatic Transmission
System Check SheetInspector 's
Name :
Customer 's Name
Date Vehicle
Brought In/ /VIN
Production Date
Licence Plate No.
Odometer Readingkm
mile
Date Problem
Occurred
ContinuousIntermittent ( times a day)
SymptomsNo up-shift ( 1st " 2nd 2nd " 3rd 3rd " 4th 4th " 5th)
Vehicle does not move ( Any position particular position)
No down-shift ( 5th " 4th 4th " 3rd 3rd " 2nd 2nd " 1st)
Lock-up malfunction
Shift point too high or too low
Harsh engagement ( N " D Lock-up Any drive position)
Slip or shudder
No kick-down
Others
DTC Check1st Time
2nd Time Check Item
Normal codeMalfunction code (DTC )
Normal codeMalfunction code (DTC )
Malfunction
Indicator LampNormal
Remains ON
DI-360
- DIAGNOSTICSAUTOMATIC TRANSMISSION
553 Author
: Date
:
2004 LAND CRUISER (RM1071U)
CUSTOMER PROBLEM ANALYSIS CHECK

DI3BQ-04
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-389
582 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DIAGNOSTIC TROUBLE CODE CHART
If a DTC is displayed during the DTC check, check the circuit listed for that code in the table below and pro-
ceed to the page given.
*
1:
...MIL light up
DTC No.
(See Page)Detection ItemTrouble AreaMIL *1Memory
P0500
(DI-274)Vehicle Speed Sensor ºAº
Open or short in No. 1 vehicle speed sensor circuit
No. 1 vehicle speed sensor
Combination meter
ECM


P0705
(DI-402)Transmission Range Sensor Cir-
cuit Malfunction (PRNDL Input)Short in park/neutral position switch circuit
Park/neutral position switch
ECM


P0710
(DI-410)Transmission Fluid Temperature
Sensor ºAº CircuitOpen or short in ATF temperature sensor No.1 circuit
ATF temperature sensor No.1
ECM


P0711
(DI-415)Transmission Fluid Temperature
Sensor ºAº PerformanceATF temperature sensor No.1
ECM

P0712
(DI-410)Transmission Fluid Temperature
Sensor ºAº Circuit Low InputShort in ATF temperature sensor No.1 circuit
ATF temperature sensor No.1
ECM


P0713
(DI-410)Transmission Fluid Temperature
Sensor ºAº Circuit High InputOpen in ATF temperature sensor No.1 circuit
ATF temperature sensor No.1
ECM


P0717
(DI-418)Input Speed Sensor Circuit No
SignalOpen or short in speed sensor NT circuit
Speed sensor NT
ECM


P0722
(DI-421)Output Speed Sensor
Open or short in speed sensor SP2 circuit
Speed sensor SP2
ECM


P0724
(DI-424)Brake Switch ºBº Circuit High
Short in stop light switch circuit
Stop light switch
ECM


P0748
(DI-426)Pressure Control Solenoid ºAº
Electrical
(Shift Solenoid Valve SL1)Open or short in shift solenoid valve SL1 circuit
Shift solenoid valve SL1
ECM


P0751
(DI-433)Shift Solenoid ºAº Performance
(Shift Solenoid Valve S1)
Shift solenoid valve S1 is stuck open or closed
Valve body is blocked up or stuck
Shift solenoid valve S1
Automatic transmission assembly
ECM


P0756
(DI-437)Shift Solenoid ºBº Performance
(Shift Solenoid Valve S2)
Shift solenoid valve S2 is stuck open or closed
Valve body is blocked up or stuck
Shift solenoid valve S2
Automatic transmission assembly
ECM


P0771
(DI-441)Shift Solenoid ºEº Performance
(Shift Solenoid Valve SR)
Shift solenoid valve SR is stuck open or closed
Shift solenoid valve SL1 is stuck open or closed
Valve body is blocked up or stuck
Shift solenoid valve SR
Shift solenoid valve SL1
Automatic transmission assembly
ECM



DI-390
- DIAGNOSTICSAUTOMATIC TRANSMISSION
583 Author
: Date
:
2004 LAND CRUISER (RM1071U)P0776
(DI-445)
Pressure Control Solenoid ºBº
Performance
(Shift Solenoid Valve SL2)
Shift solenoid valve SL2 is stuck open or closed
Valve body is blocked up or stuck
Shift solenoid valve SL2
Automatic transmission assembly
ECM


P0778
(DI-449)Pressure Control Solenoid ºBº
Electrical
(Shift Solenoid Valve SL2)Open or short in shift solenoid valve SL2 circuit
Shift solenoid valve SL2
ECM


P0781
(DI-453)1-2 Shift
Valve body is blocked up or stuck (1-2 shift valve)
Automatic transmission assembly
ECM


P0818
(DI-457)Driveline Disconnect Switch In-
put CircuitShort in transfer neutral position switch circuit
Transfer neutral position switch
ECM


P0850
(DI-402)Park/Neutral Switch Input Circuit
Short in park/neutral position switch circuit
Park/neutral position switch
ECM


P0973
(DI-460)Shift Solenoid ºAº Control Circuit
Low (Shift Solenoid Valve S1)Open or short in shift solenoid valve S1 circuit
Shift l id l S1


P0974
(DI-460)Shift Solenoid ºAº Control Circuit
High (Shift Solenoid Valve S1)Shift solenoid valve S1
ECM


P0976
(DI-464)Shift Solenoid ºBº Control Circuit
Low (Shift Solenoid Valve S2)Open or short in shift solenoid valve S2 circuit
Shift l id l S2


P0977
(DI-464)Shift Solenoid ºBº Control Circuit
High (Shift Solenoid Valve S2)Shift solenoid valve S2
ECM


P0985
(DI-468)Shift Solenoid ºEº Control Circuit
Low (Shift Solenoid Valve SR)Open or short in shift solenoid valve SR circuit
Shift l id l SR


P0986
(DI-468)Shift Solenoid ºEº Control Circuit
High (Shift Solenoid Valve SR)Shift solenoid valve SR
ECM


P1782
(DI-472)T/F L4 Range Position Switch
PerformanceShort in transfer L4 position switch circuit
Transfer L4 position switch
ECM


P2714
(DI-476)Pressure Control Solenoid ºDº
Performance
(Shift Solenoid Valve SLT)
Shift solenoid valve SLT is stuck open or closed
Valve body is blocked up or stuck
Shift solenoid valve SLT
Automatic transmission assembly
ECM


P2716
(DI-479)Pressure Control Solenoid ºDº
Electrical
(Shift Solenoid Valve SLT)Open or short in shift solenoid valve SLT circuit
Shift solenoid valve SLT
ECM


P2740
(DI-483)Transmission Fluid Temperature
Sensor ºBº CircuitOpen or short in ATF temperature sensor No. 2 circuit
ATF temperature sensor No. 2
ECM


P2742
(DI-483)Transmission Fluid Temperature
Sensor ºBº Circuit LowShort in ATF temperature sensor No. 2 circuit
ATF temperature sensor No. 2
ECM


P2743
(DI-483)Transmission Fluid Temperature
Sensor ºBº Circuit HighOpen in ATF temperature sensor No. 2 circuit
ATF temperature sensor No. 2
ECM