- DIAGNOSTICSENGINE
DI-83
276 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not presentSee ºList of disable a monitorº (on page DI-3)
Case 1 (When temperature is fixed between 35C (95F) and 60C (140F)):
Cumulative idle off period250 sec.-
Speed increase 30 km/h (19 mph) or more10 times-
Engine coolant temperature35C (95F)60C (140F)
Intake air temperature-6.7C (20F)-
Case 2 (When temperature is fixed at 60C (140F) or more):
Engine coolant temperature at engine
start60C (140F)-
Intake air temperature-6.7C (20F)-
Stop and goOnce or more (Stop for 20 sec. or more and accelerate to more than 70 km/h (43 mph)
with in 40 sec.)
Steady driving and stop *Once or more
*: Vehicle is driven by 65 km/h (40 mph) or more for 30 sec. or more and the vehicle speed reaches 70 km/h
(44 mph). The vehicle is decelerated from 65 km/h (40 mph) to 3 km/h (2 mph) or less within 35 sec. and
stopped for 10 sec.
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
Case1 (When temperature is fixed between 35C (95F) and 60C (140F)):
Change of engine coolant temperature valueLess than 3C (5.4F)
Case2 (When temperature is fixed at 60C (140F) or more):
Change of engine coolant temperature value1C (1.8F) or less
COMPONENT OPERATING RANGE
Standard Value
Engine coolant temperature changes with the actual engine coolant temperature.
INSPECTION PROCEDURE
HINT:
If DTC P0115, P0116, P0117, P0118 and P0125 are output simultaneously, ECT sensor circuit may
be open or shorted. Perform the troubleshooting of DTC P0115, P0117 or P0118 first.
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records
the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can
help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel
ratio was lean or rich, as well as other data from the time when a malfunction occurred.
Replace engine coolant temperature sensor.
DI-100
- DIAGNOSTICSENGINE
293 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not presentSee ºList of Disable a Monitorº table (on page DI-3)
Fuel cutOFF
EngineRunning
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
Time until ºengine coolant temperatureº detection temperature reaches feedback start temperature
When the temperature at the time of engine starting is
10°C (50°F) or moreEngine coolant temperature is less than ºclosed-loop enable temperatureº
when 2 min. or more after engine start
When the temperature at the time of engine starting is
º-6.6°C (20°F)º to º10°C (50°F)ºEngine coolant temperature is less than ºclosed-loop enable temperatureº
when 5 min. or more after engine start
When the temperature at the time of engine starting is
-6.6°C (20°F) or lessEngine coolant temperature is less than ºclosed-loop enable temperatureº
when 20 min. or more after engine start
INSPECTION PROCEDURE
HINT:
If DTC P0115, P0116, P0117, P0118 and P0125 are output simultaneously, engine coolant tempera-
ture sensor circuit may be open or short. Perform the troubleshooting of DTC P0115, P0117 or P0118
first.
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records
the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can
help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel
ratio was lean or rich, as well as other data from the time when a malfunction occurred.
1 Are there any other codes (besides DTC P0125) being output?
PREPARATION:
(a) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(b) Turn the ignition switch ON and push the hand-held tester or OBD II scan tool main switch ON.
(c) When using hand-held tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC
INFO / CURRENT CODES.
CHECK:
Read the DTCs using the hand-held tester or the OBD II scan tool.
RESULT:
Display (DTC output)Proceed to
P0125A
ºP0125º and other DTCsB
HINT:
If any other codes besides ºP0125º are output, perform the troubleshooting for those DTCs first.
B Go to relevant DTC chart (See page DI-36).
A
A21026
Component Side
C3
Crankshaft Position Sensor
DI-194
- DIAGNOSTICSENGINE
387 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records
the engine conditions when a malfunction is detected. When troubleshooting it is useful for determining
whether the vehicle was running or stopped. the engine was warmed up or not, the air-fuel ratio lean
or rich, etc. at the time of the malfunction.
READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL
(a) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(b) Start the engine and push the hand-held tester or the OBD II scan tool main switch ON.
(c) Select the item ºDIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / ENGINE SPDº.
The engine speed can be confirmed in DATA LIST using the hand-held tester or OBD II scan tool. If
there is no NE signals from the crankshaft position sensor despite the engine revolving, the engine
speed will be indicated as zero. If voltage output of the crankshaft position sensor is insufficient, the
engine speed will be indicated as lower RPM (than the actual RPM).
1 Check resistance of crankshaft position sensor.
PREPARATION:
Disconnect the C3 crankshaft position sensor connector.
CHECK:
Measure the resistance between terminals 1 and 2.
OK:
Tester ConnectionSpecified Condition
12985 to 1,600 W at cold1 - 21,265 to 1,890 W at hot
NOTICE:
º Coldº and ºHotº shown above mean the temperature of
the coils themselves. ºColdº is form -10°C (14°F) to 50°C
(122°F) and ºHotº is from 50°C (122°F) to 100°C (212°F).
NG Replace crankshaft position sensor.
OK
DI-248
- DIAGNOSTICSENGINE
441 Author: Date:
TYPICAL ENABLING CONDITIONS
ItCriteriaItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not presentSee ºList of disable a monitorº (on page DI-3)
Common pre-conditions for 0.020, 0.040 inch and gross:
Altitude-2,400 m (7,872 ft.)
Throttle position learningCompleted
Vapor pressure sensorNo malfunction
Difference between intake air temperature
and engine coolant temperature at engine
start
-7C (-13F)11.1C (20F)
Vehicle speed conditionA or B
A. Time after vehicle stopped
(Less than 10 km/h (6 mph))90 sec.-
B. Time after vehicle started
(7 km/h (4 mph) or more)20 sec.-
0.020 inch malfunction detection:
Engine coolant temperature at engine
start10C (50F)32C (89.6F)
Intake air temperature at engine start10C (50F)32C (89.6F)
Intake air temperature10°C (50°F)-
Fuel level condition in fuel tank during leak
checkFuel slosh is small (must not drive on road in bad conditions)
Time after engine start-50 min.
Fuel tank pressure condition before leak
check (Fuel tank condition before closed
negative pressure introduction)Tank inside pressure change is small before negative pressure introduction.
(Reference: If fuel in tank is high temperature, vapor volume increase and tank inside pressure
changes also increase)
Vehicle speed and intake air amount
condition before and after negative pres-
sure introduction
Steady speed and not change greatly of intake air amount
Fuel level-90%
0.020 inch leak detectionNot completed
0.040 inch leak detectionNot detected
CCV malfunction, bypass VSV malfunc-
tionNot detected
Vehicle speed-130 km/h (81 mph)
EVAP VSV (Evap purge VSV) malfunctionNot detected
0.040 inch and gross malfunction:
Engine coolant temperature at engine
start10°C (50°F)35°C (95°F)
Intake air temperature at engine start10°C (50°F)35°C (95°F)
Intake air temperature10°C (50°F)-
Fuel level condition in fuel tank during leak
checkFuel slosh is small (must not drive on road in bad conditions)
Time after engine start-50 min.
Fuel tank pressure condition before leak
check (Fuel tank condition before closed
negative pressure introduction)Tank inside pressure change is small before negative pressure introduction.
(Reference: If fuel in tank is high temperature, vapor volume increase and tank inside pressure
changes also increase)
DI-270
- DIAGNOSTICSENGINE
463 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL ENABLING CONDITIONS
P0451
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not presentSee ºList of disable a monitorº (on page DI-3)
Signal fluctuation (noise) monitoring:
Altitude-2,400 m (7,872 ft)
Difference between intake air temperature
and engine coolant temperature at engine
start
-7C (-12.6F)11.1C (20F)
Engine coolant temperature at engine
start4.4C (40F)35C (95F)
Intake coolant temperature at engine start4.4C (40F)35C (95F)
Vehicle stop and idling5 sec.15 sec.
Stuck monitoring:
Altitude-2,400 m (7,872 ft)
Vapor pressure sensorNo malfunction
Difference between intake air temperature
and engine coolant temperature at engine
start
-7C (-12.6F)11.1C (20F)
Engine coolant temperature at engine
start4.4C (40F)35C (95F)
Intake air coolant temperature at engine
start4.4C (40F)35C (95F)
Time after engine start5 sec.-
P0452 and P0453
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not presentSee ºList of disable a monitorº (on page DI-3)
Difference between intake air temperature
and engine coolant temperature at engine
start
-12C (21.6F)
Engine coolant temperature at engine
start10C (50F)35C (95F)
Intake air temperature at engine start10C (50F)35C (95F)
EngineRunning
- DIAGNOSTICSENGINE
DI-271
464 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL MALFUNCTION THRESHOLDS
P0451
Detection CriteriaThreshold
Signal fluctuation (noise) monitoring:
The number of times the output changed 0.667 kPa (± 5
mmHg, ± 0.02 in.Hg) or more during 5 to 15 sec. after idling
and vehicle stop
5 times or more
No signal change (stuck) monitoring:
Fuel tank pressure ºno changeº time (less than 0.018 kPa
(0.135 mmHg, 0.005 in.Hg) change since engine start)10 min. or more
P0452 and P0453
Detection CriteriaThreshold
P0452:
Fuel tank pressureLess than -3.999 kPa (-30 mmHg, -1.18 in.Hg) / when engine running
P0453:
Fuel tank pressure1.999 kPa (15 mmHg, 0.59 in.Hg) or more / when engine running
WIRING DIAGRAM
Refer to DTC P0441, P0446 and P2418 on page DI-222.
INSPECTION PROCEDURE
HINT:
If different DTCs related to different system that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may be open.
If DTC P0441 (Purge Flow), P0446 (CCV), P0451, P0452 or P0453 (Evaporative Pressure Sensor)
is output with DTC P0442 or P0456, troubleshoot DTC P0441, P0446, P0451, P0452 or P0453 first.
If no malfunction is detected, troubleshoot DTC P0442 or P0456 next.
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records
the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determin-
ing whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio
was lean or rich, etc. at the time of the malfunction.
When the ENGINE RUN TIME in the freeze frame data is less than 200 seconds, carefully check the
vapor pressure sensor.
DI-298
- DIAGNOSTICSENGINE
491 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help deter-
mine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean
or rich, as well as other data from the time when a malfunction occurred.
Hand-held tester:
1 Connect hand-held tester, and check STA signal.
PREPARATION:
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch ON, and push the hand-held tester main switch ON.
(c) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.
CHECK:
Read the STA signal on the hand-held tester while the starter operates.
OK:
Ignition Switch PositionONSTART
STA SignalOFFON
OK Go to step 5.
NG
2 Check park/neutral position switch (See page DI-402).
NG Replace park/neutral position switch.
Go to next step 5 after the replacement.
OK
3 Check ignition switch (See page BE-29).
NG Replace ignition switch.
Go the next step 5 after the replacement.
OK
- DIAGNOSTICSENGINE
DI-43
236 Author: Date:
2004 LAND CRUISER (RM1071U)P0617
(DI-296)
Starter Relay Circuit High
Park/neutral position switch
Starter relay circuit
Ignition switch
ECM
P0657
(DI-294)Actuator Supply Voltage Circuit /
OpenECM
P0724
(DI-424)Brake Switch ºBº Circuit High
Short in stop light switch signal circuit
Stop light switch
ECM
P2102
(DI-302)Throttle Actuator Control Motor
Circuit LowOpen in throttle control motor and sensor circuit
Throttle control motor and sensor
ECM
P2103
(DI-302)Throttle Actuator Control Motor
Circuit High
Short in throttle control motor and sensor circuit
Throttle control motor and sensor
Throttle valve
Throttle body
ECM
P2111
(DI-306)Throttle Actuator Control System
- Stuck Open
Throttle control motor and sensor circuit
Throttle control motor and sensor
Throttle valve
Throttle body
P2112
(DI-306)Throttle Actuator Control System
- Stuck Closed
Throttle control motor and sensor circuit
Throttle control motor and sensor
Throttle valve
Throttle body
P2118
(DI-310)Throttle Actuator Control Motor
Current Range/PerformanceOpen in throttle control motor and sensor power source circuit
ETCS fuse
ECM
P2119
(DI-315)Throttle Actuator Control Throttle
Body Range/PerformanceElectric throttle control system
Throttle body
P2120
(DI-318)Throttle/Pedal Position Sensor/
Switch ºDº CircuitAccelerator pedal position sensor
ECM
P2121
(DI-331)Throttle/Pedal Position Sensor/
Switch ºDº Circuit Range/Perfor-
mance
Accelerator pedal position sensor
P2122
(DI-318)Throttle/Pedal Position Sensor/
Switch ºDº Circuit Low Input
Accelerator pedal position sensor
VCPA circuit open
VPA circuit open or ground short
ECM
P2123
(DI-318)Throttle/Pedal Position Sensor/
Switch ºDº Circuit High InputAccelerator pedal position sensor
EPA circuit open
ECM
P2125
(DI-318)Throttle/Pedal Position Sensor/
Switch ºEº CircuitAccelerator pedal position sensor
ECM
P2127
(DI-318)Throttle/Pedal Position Sensor/
Switch ºEº Circuit Low Input
Accelerator pedal position sensor
VCP2 circuit open
VPA2 circuit open or ground short
ECM
P2128
(DI-318)Throttle/Pedal Position Sensor/
Switch ºEº Circuit High InputAccelerator pedal position sensor
EPA circuit open
ECM
P2135
(DI-84)Throttle Pedal Position Sensor/
Switch ºAº / ºBº Voltage Correla-
tionVTA1 and VTA2 circuit are short-circuited
Throttle control motor and sensor
ECM