1998 TOYOTA LAND CRUISER brake sensor
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- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-453
646 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P0781 1-2 Shift
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor and direct clutch speed sensor to detect the actual
gear position (1st, 2nd, 3rd, 4th or 5th gear). Then the ECM compares the actual gear with the shift schedule
in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic
transmission (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P0781The gear required by the ECM does not match the actual gear
when driving (2-trip detection logic)Valve body is blocked up or stuck (1-2 shift)
Automatic transmission assembly
ECM
MONITOR DESCRIPTION
The ECM calculates the ºactualº transmission gear by comparing the signals from the input speed sensor
and the output speed sensor. The ECM can detect many mechanical problems in the shift solenoids, valve
body, and the transmission clutches, brakes, and gears. If the ECM detects that the actual gear position and
the commanded gear position are different, it will illuminate the MIL and store the DTC.
MONITOR STRATEGY
Related DTCsP0781Valve body/Rationality check
MainValve body
Required sensors/ComponentsSubAutomatic transmission assembly, Speed sensor (NT), Speed sensor
(NO), Vehicle speed sensor, Throttle speed sensor
Frequency of operationContinuous
Condition (A) and (B)0.4 sec.
DurationCondition (C)3 sec.Duration
Condition (D)0.5 sec.
MIL operation2 driving cycles
Sequence of operationNone
DIB3D-02
Page 997 of 3115
D01769
DI-476
- DIAGNOSTICSAUTOMATIC TRANSMISSION
669 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2714 Pressure Control Solenoid ºDº Performance
(Shift Solenoid Valve SLT)
SYSTEM DESCRIPTION
The ECM calculates the shifting condition by using the signals
from the vehicle speed sensor, throttle position sensor, etc..
And compares this result with the signal that ECM sends to SLT
to detect mechanical trouble of the shift solenoid valve SLT,
valve body, torque converter clutch and automatic transmission
assembly (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P2714
ECM detects a malfunction on SLT (ON side) according to the
revolution difference of the turbine and the output shaft, and
also by the oil pressure.Shift solenoid valve SLT is stuck open or closed
Valve body blocked up or stuck
Automatic transmission assembly
MONITOR DESCRIPTION
The ECM sends (ED: delete ºtheº) signals (Duty Ratio) to the shift solenoid valve SLT based on the informa-
tion such as the signal from throttle position sensor and the vehicle speed sensor.
Based on the signal's duty-ratio, the shift solenoid valve SLT adjusts the hydraulic pressure to the primary
regulator valve to an appropriate level. This function enables a smooth vehicle operation by adjusting the
line hydraulic pressure to match the engine output and running condition.
The ECM calculates the ºactualº transmission gear by comparing the signals from the input speed sensor
and the output speed sensor. The ECM can detect many mechanical problems in the shift solenoids, valve
body, and the transmission clutches, brakes, and gears. If the ECM detects that the actual gear position and
the commanded gear position are different, it will illuminate the MIL and store the DTC.
MONITOR STRATEGY
Related DTCsP2714Shift solenoid valve SLT/ON malfunction
MainShift solenoid valve SLT
Required sensors/ComponentsSubValve body, ATF temperature sensor, Speed sensor (NT), Speed sensor
(NO)
Frequency of operationContinuous
DurationImmediate
MIL operation2 driving cycles
Sequence of operationNone
DIB3J-02
Page 1008 of 3115
D01769
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-487
680 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2757Torque Converter Clutch Pressure Control Solenoid
Performance(Shift Solenoid Valve SLU)
SYSTEM DESCRIPTION
The ECM uses the signals from the Throttle Position Sensor
and Air-flow Meter to monitor the engagement condition of the
lock-up clutch.
Then the ECM compares the engagement condition of the
lock-up clutch with the lock-up schedule in the ECM memory
to detect mechanical trouble of the shift solenoid valve SLU,
valve body, torque converter clutch and automatic transmission
assembly (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P2757
Lock-up does not occur when driving in the lock-up range
(normal driving at 80 km/h [50 mph]), or lock-up remains ON
in the lock-up OFF range.
(2-trip detection logic)Shift solenoid valve SLU is stuck open or closed
Valve body blocked up or stuck
Lock-up clutch
Automatic transmission assembly
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 causes lock-up or flexible lock-up of the torque converter
clutch.
To monitor the condition of the lock up clutch, the ECM monitors the signals from the input speed sensor,
crank position sensor, the throttle position sensor, and air flow meter. The ECM uses this information to deter-
mine when the vehicle's torque converter clutch should be locked-up. The ECM can detect many mechani-
cal problems in the shift solenoids, valve body, and the transmission clutches, brakes, and gears. If the ECM
detects that the torque converter clutch locked below the minimum lock-up speed, it will illuminate the MIL
and store the DTC.
MONITOR STRATEGY
RltdDTCP2757Shift solenoid valve SLU/OFF malfunctionRelated DTCsP2757Shift solenoid valve SLU/ON malfunction
MainShift solenoid valve SLU
Required sensors/ComponentsSubValve body, Vehicle speed sensor, Throttle position sensor, Speed sensor
(NT), Speed sensor (NO)
Frequency of operationContinuous
DtiOFF malfunction2 sec.DurationON malfunction1.8 sec.
MIL operation2 driving cycles
Sequence of operationNone
DIB3L-02
Page 1019 of 3115
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
Page 1029 of 3115
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-365
558 Author: Date:
(3) When operating an OBD II scan tool (complying
with SAE J1978) or hand-held tester to erase the
codes, the DTCs and freeze frame data will be
erased. (See the OBD II scan tool's instruction book
for operating instructions.)
(c) When not using the OBD II scan tool or hand-held tester:
Clearing the DTCs.
(1) Disconnecting the battery terminal or remove the
EFI and ETCS fuse from engine room J/B for 60 se-
conds or more.
4. DATA LIST
HINT:
According to the DATA LIST displayed by the OBD II scan tool or 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 method to shorten labor time.
(a) Warm up the engine.
(b) Turn the ignition switch OFF.
(c) Connect the OBD II scan tool or Hand-held tester to the DLC3.
(d) Turn the ignition switch ON.
(e) Push the ºONº button of OBD ll scan tool or Hand-held tester.
(f) Select the item º/DIAGNOSIS/ENHANCED OBD ll/DATA LIST/ALL (or ATM)º.
(g) According to the display on tester, read the ºDATA LISTº.
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
STOP LIGHT SWStop light SW Status/
ON or OFFBrake Pedal is depressed: ON
Brake Pedal is released: OFFu
SHIFTActual Gear Position/
1st, 2nd, 3rd, 4th or 5th
Shift Lever Position is;
L: 1st
2: 1st or 2nd
3: 1st, 2nd or 3rd
4: 1st, 2nd, 3rd or 4th
D: 1st, 2nd, 3rd, 4th or 5th
u
PNP SW [NSW]PNP SW Status/
ON or OFFShift lever position is;
P or N: ON
Except P or N: OFF
REVERSEPNP SW Status/
ON or OFFShift lever position is;
R: ON
Except R: OFF
DRIVEPNP SW Status/
ON or OFFShift lever position is;
D and 4: ON
Except D and 4: OFF
Th hift l iti d th
4th/DRIVEPNP SW Status/
ON or OFFShift lever position is;
4: ON
Except 4: OFFThe shift lever position and these
values are different, there are fail-
ures of the PNP switch or shift
cable adjustment
3RDPNP SW Status/
ON or OFFShift lever position is;
3: ON
Except 3: OFFcable adjustment.
2NDPNP SW Status/
ON or OFFShift lever position is;
2 and L: ON
Except 2 and L: OFF
LOWPNP SW Status/
ON or OFFShift lever position is;
L: ON
Except L: OFF
LOCK UP SOLLock Up Solenoid Status/
ON or OFFLock Up: ON
Except Lock Up: OFFu
Page 1073 of 3115
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 ºAºCombination 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 PerformanceECM
Page 1083 of 3115
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
Page 1401 of 3115
DI-42
- DIAGNOSTICSENGINE
235 Author: Date:
2004 LAND CRUISER (RM1071U)P0442
(DI-245)
Evaporative Emission Control
System Leak Detected (Small
Leak)
After the negative pressure introduction has been completed, if
the pressure in the EVAP system sharply increases.
Hose or tube cracked, holed, damaged or loose seal ((3) in
Fig. 1)
Fuel tank cap incorrectly installed
Fuel tank cap cracked or damaged
Vacuum hose cracked, holed, blocked, damaged or discon-
nected ((1), (2), (4), (5), (6), (7), (8) and (9) in Fig. 1)
Fuel tank cracked, holed or damaged
Charcoal canister cracked, holed or damaged
Open or short in vapor pressure sensor circuit
Vapor pressure sensor
ECM
P0446
(DI-222)Evaporative Emission Control
System Vent Control CircuitSame as DTC No. P0441
P0451
(DI-268)Evaporative Emission Control
System Pressure Sensor/Switch
Range/PerformanceOpen or short in vapor pressure sensor circuit
Vapor pressure sensor
ECM
P0452
(DI-268)Evaporative Emission Control
System Pressure Sensor/Switch
Low InputOpen in vapor pressure sensor circuit
Vapor pressure sensor
ECM
P0453
(DI-268)Evaporative Emission Control
System Pressure Sensor/Switch
High InputShort in vapor pressure sensor circuit
Vapor pressure sensor
ECM
P0455
(DI-245)Evaporative Emission Control
System Leak Detected (Gross
Leak)
Same as DTC No. P0442
P0456
(DI-245)Evaporative Emission Control
System Leak Detected (Very
Small Leak)
Same as DTC No. P0442
P0500
(DI-274)Vehicle Speed Sensor ºAºCombination meter
Open or short in vehicle speed sensor circuit
P0503
(DI-274)Vehicle Speed Sensor ºAº Inter-
mittent/Erratic/High
Oen or short in vehicle s eed sensor circuit
Vehicle speed sensor
ECM-
P0504
(DI-278)Brake Switch ºAº/ºBº Correlation
Short in stop lamp switch signal circuit
STOP fuse
Stop lamp switch
ECM
-
P0505
(DI-286)Idle Air Control System
Air induction system
Electric throttle control system
PCV hose connection
P0560
(DI-290)System Voltage
Back-up power source circuit
EFI or ECD No. 1 fuse
ECM
P0571
(DI-993)Brake Switch ºAº Circuit
Stop light switch signal circuit
Stop light switch
ECM
-
P0604
(DI-294)Internal Control Module Random
Access Memory (RAM) ErrorECM
P0606
(DI-294)ECM/PCM ProcessorECM
P0607
(DI-294)Control Module PerformanceECM