1998 TOYOTA LAND CRUISER sensor

DI-368
- DIAGNOSTICSAUTOMATIC TRANSMISSION
561 Author
: Date
:
AFSAir fuel ratio sensor
O2 sensorHeater oxygen sensor
Oxygen sensor pumping current circuitOxygen sensor output signal
Oxygen sensor reference ground circuitOxygen sensor signal ground
Accel position sensorAccelerator pedal position sensor
Throttle actuator control motor, Actuator control motor, Elec-
tronic throttle motor, Throttle control motorElectronic throttle actuator
Electronic throttle control system, Throttle actuator control
systemElectronic throttle control system
Throttle/pedal position sensor, Throttle/pedal position switch,
Throttle position sensor/switchThrottle position sensor
Turbo press sensorTurbocharger pressure sensor
Turbo VSVTurbocharger pressure control solenoid valve
P/S pressure switchPower-steering pressure switch
VSV for ACMActive control engine mount
Speed sensor, Vehicle speed sensor ºAº, Speed sensor for
skid control ECUVehicle speed sensor
ATF temperature sensor, Trans. fluid temp. sensor, ATF
temperature sensor ºAºTransmission fluid temperature sensor
Electronic controlled automatic transmission, ECTElectronically controlled automatic
Intermediate shaft speed sensor ºAºCounter gear speed sensor
Output speed sensorOutput shaft speed sensor
Input speed sensor, Input turbine speed sensor ºAº, Speed
sensor (NT), Turbine speed sensorInput turbine speed sensor
PNP switch, NSWPark/neutral position switch
Pressure control solenoidTransmission pressure control solenoid
Shift solenoidTransmission shift solenoid valve
Transmission control switch, Shift lock control unitShift lock control module
Engine immobilizer system, Immobilizer systemVehicle anti-theft system

DI3BT-04
DI-396
- DIAGNOSTICSAUTOMATIC TRANSMISSION
589 Author
: Date
:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the diagnostic trouble code check although the trouble still occurs, check
the electrical circuits for each symptom in the order given in the charts on the following pages and proceed
to the page given for troubleshooting.
The Matrix Chart is divided into 3 chapters.
Chapter 1: Electronic Circuit Matrix Chart
Chapter 2: On-vehicle Repair Matrix Chart
Chapter 3: Off-vehicle Repair Matrix Chart
If the instruction ºProceed to next circuit inspection shown on matrix chartº is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.
If the trouble still occurs even though there are no abnormalities in any of the other circuits, then check
and replace the ECM.
Chapter 1: Electronic Circuit Matrix Chart
HINT:
*1: When a malfunction is on the circuit *1 mark is attached, DTC is output.
SymptomSuspect AreaSee page
No up-shift
(A particular gear, from 1st to 4th gear, is not up-shifted)1. Shift solenoid valve (S1) circuit *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI-460
DI-464
IN-36
No up-shift (4th " 5th)
1. Transmission control switch circuit (D - 4) *1
2. Engine coolant temp. sensor circuit *1
3. Speed sensor NT circuit *1
4. Shift solenoid valve (SL1) circuit *1
5. Shift solenoid valve (SL2) circuit *1
6. Shift solenoid valve (SR) circuit *1
7. ECM
DI-402
DI-36
DI-418
DI-426
DI-449
DI-468
IN-36
No up-shift (3rd " 4th)
1. Engine coolant temp. sensor circuit *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI-36
DI-464
IN-36
No up-shift (1st " 2nd)
1. Transmission control switch circuit (2 - L) *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI-402
DI-464
IN-36
No down-shift (5th " 4th)
1. Transmission control switch circuit (D - 4) *1
2. Shift solenoid valve (SL1) circuit *1
3. Shift solenoid valve (SL2) circuit *1
4. Shift solenoid valve (SR) circuit *1
5. ECM
DI-402
DI-426
DI-449
DI-468
IN-36
No down-shift (2nd " 1st)
1. Transmission control switch circuit (2 - L) *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI-402
DI-464
IN-36
No down-shift
(A particular gear, from 1st to 4th gear, is not down-shifted)1. Shift solenoid valve (S1) circuit *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI-460
DI-464
IN-36
No lock-up
1. ATF temperature sensor circuit *1
2. Transfer L4 position switch circuit *1
3. Stop light switch circuit *1
4. Speed sensor NT circuit *1
5. Shift solenoid valve (SLU) circuit *1
6. ECM
DI-410
DI-472
DI-424
DI-418
DI-491
IN-36
No lock-up offECMIN-36

- 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

DI3CI-14
DI-992
- DIAGNOSTICSCRUISE CONTROL SYSTEM
1185 Author
: Date
:
2004 LAND CRUISER (RM1071U)
CIRCUIT INSPECTION
DTC P0500/21 Vehicle Speed Sensor ºAº
DTC P0503/23 Vehicle Speed Sensor ºAº Intermittent/Errat-
ic/High
CIRCUIT DESCRIPTION
See page .DI-274
DTC No.DTC Detection ConditionTrouble Area
P0500/21
P0503/23
No vehicle speed sensor signal to ECM under following condi-
tions (a) and (b): (2 trip detection logic)
(a) Park/neutral position switch is OFF
(b) Vehicle is being driven
Combination meter

Open or short in vehicle speed sensor circuit

Vehicle speed sensor

ECM
WIRING DIAGRAM
See page .DI-274
INSPECTION PROCEDURE
See page .DI-274

DI26U-32
DI-988
- DIAGNOSTICSCRUISE CONTROL SYSTEM
1181 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table
below and proceed to the appropriate page.
DTC No.
(See Page)Circuit InspectionTrouble Area
P0500/21
(DI-992)Vehicle Speed Sensor ºAº
Combination meter

Open or short in vehicle speed sensor circuit
P0503/23
(DI-992)Vehicle Speed Sensor ºAº Intermittent/Erratic/High

Oen or short in vehicle s eed sensor circuit

Vehicle speed sensor

ECM
P0571/52
(DI-993)Brake Switch ºAº Circuit

Short in stop light switch circuit

Stop light switch

ECM
P0607/54
(DI-997)Control Module Performance
ECM

I24683
ºCRUISE
MAINº
Indicator
light
BE4034
Indicator Light
1.5 sec.0.5 sec.
ON
OFF
A04550
10 11 12 13 14 15 16 12345678
9
TCCG
I03610
Normal Code
0.25 sec.
0.25 sec.
ON
OFF
ON
OFF
2.5 sec. 0.5 sec.1.5 sec.
Malfunction codes 52
Code 52
0.5 sec.
DI-982
- DIAGNOSTICSCRUISE CONTROL SYSTEM
1175 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(c) Check the indicator.
(1) Turn the ignition switch to ON.
(2) Check that the CRUISE MAIN indicator light comes
on when the cruise control main switch is turned
ON, and that the indicator light goes off when the
main switch is turned OFF.
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting (See page BE-2) for the combination meter
section.
(d) Check the DTC.
HINT:
If a malfunction occurs in the speed sensor or stop light switch,
etc. during cruise control driving, the ECM actuates AUTO
CANCEL of the cruise control and turns ON and OFF the
CRUISE MAIN indicator light to inform the driver of a malfunc-
tion. At the same time, the malfunction is stored in memory as
a diagnostic trouble code.
(e) Output DTC using diagnosis check wire.
(1) Turn the ignition switch ON.
(2) Using SST, connect terminals Tc and CG of DLC3.
SST 09843-18040
(3) Read the DTC on the CRUISE MAIN indicator light.
HINT:

If the DTC is not output, inspect the diagnosis circuit.

As an example, the blinking patterns for codes; normal 52
are shown in the illustration.

I24672
Hand-held tester
DLC3
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-983
1176 Author
: Date
:
2004 LAND CRUISER (RM1071U)
2. USING HAND-HELD TESTER
(a) Hook up the hand-held tester to the DLC3.
(b) Monitor the ECU data by following the prompts on the tes-
ter screen.
HINT:
Hand-held tester has a ºSnapshotº function which records the
monitored data.
Please refer to the hand-held tester operator's manual for fur-
ther details.
3. DTC CLEARANCE
(a) The following actions will erase the DTCs and freeze
frame data.
(1) Operating the hand-held tester to erase the codes
(See the hand-held tester instruction book for oper-
ating instructions.).
(2) Disconnecting the battery terminals or EFI fuse.
(b) After completing repairs, the DTC retained in memory can
be cleared by removing the EFI fuse for 10 seconds or
more with the ignition switch off.
(c) Check that the normal code is displayed after connecting
the fuse.
4. DATA LIST
HINT:
According to the DATA LIST displayed by the hand-held tester,
you can read the value of the switch, sensor, actuator and so
on without parts removal. Reading the DATA LIST as a first step
of troubleshooting is one of the method to shorten the labor
time.
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) According to the display on tester, read the ºDATA LISTº.
ItemMeasurement Item/Display
(Range)Normal ConditionDiagnostic Note
VEHICLE SPD
Vehicle speed/
min.: 0 km/h (0 mph)max.: 255
km/h (158 mph)
Actual vehicle speed-
MEMORY SPD
Vehicle speed/
min.: 0 km/h (0 mph)max.: 255
km/h (158 mph)
Actual vehicle speed-
THROTTLE
Throttle operating angle/
min.: 0 km/h (0 mph)max.: 125
km/h ( mph)
Actual vehicle speed-
CRUISE CONTROLCruise controlON: Cruise control is SET
OFF: Cruise control is UNSET-
MAIN SW (MAIN)Main switch
(Main CPU)
ON: Main switch (Main CPU) is
SET
OFF: Main switch (Main CPU) is
UNSET
-

DI26X-37
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-991
1184 Author
: Date
:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSee page
SET not occurring or CANCEL occurring.
(DTC is Normal)
1. Input Signal Circuit
2. Vehicle Speed Sensor Circuit
3. Stop Light Switch Circuit
4. Park/Neutral Position Switch Circuit
5. ECMDI-997
DI-992
DI-993
IN-36
SET not occurring or CANCEL occurring.
(DTC is not output)1. ECMIN-36
Actual vehicle speed deviates above or below the set speed.1. Input Signal Circuit
2. ECMDI-997
IN-36
Gear shifting occurs frequently between 3rd and O/D when driving
on uphill road. (Hurting)1. ECMIN-36
Cruise control not cancelled, even when brake pedal is de-
pressed.1. Stop Light Switch Circuit
2. ECMDI-993
IN-36
Cruise control not cancelled, even when transmission is shifted to
ºNº position.1. Park/Neutral Position Switch Circuit
2. ECM
IN-36
Control switch does not operate.
(+/SET, +/RES, CANCEL not possible)1. Cruise Control Switch Circuit
2. ECMDI-998
IN-36
SET possible at 40 km/h (25 mph) or less, or CANCEL does not
operate at 40 km/h (25 mph) or less.1. Input Signal Circuit
2. ECMDI-997
IN-36
Poor response is ACCEL and RESUME modes.1. ECMIN-36
O/D does not resume, even though the road is not uphill.1. ECMIN-36
DTC memory is erased.1. ECMIN-36
DTC is not output, or is output when should not be.1. Diagnosis Circuit
2. ECM-
IN-36
Cruise MAIN indicator light remains ON or falls to light up.1. Input Signal Circuit
2. ECMDI-997
IN-36
Cruise MAIN indicator light does not light up.1. Cruise MAIN indicator Light CircuitDI-1001