- DIAGNOSTICSENGINE
DI-269
462 Author: Date:
2004 LAND CRUISER (RM1071U)DTC No.
DTC Detecting ConditionTrouble Area
P0451
Vapor pressure sensor output extremely changes under condi-
tions of (a) and (b): (2 trip detection logic)
(a) Vehicle speed: 0 km/h (0mph), Engine speed: Idling and
pressure switching valve is OFF
(b) Vapor pressure sensor value opening pressure valve of
charcoal canister
Open or short in vapor pressure sensor circuit
P0452
10 seconds or less after engine starting condition vapor pres-
sure sensor fixed value continues for fixed value or less:
(2 trip detection logic)Vapor pressure sensor
ECM
P0453
10 seconds or less after engine starting condition vapor pres-
sure sensor fixed value continues for fixed value or more:
(2 trip detection logic)
MONITOR STRATEGY
P0451
Related DTCsP0451Evaporative emission control system pressure
sensor range/performance
Main sensors/componentsVapor pressure sensor
Required sensors/componentsRelated sensors/componentsMass air flow meter, Engine coolant temperature
sensor
Frequency of operationOnce per driving cycle
DurationSignal fluctuation (noise) monitoring: 10 sec.
No signal change (stuck) monitoring: 20 min.
MIL operation2 driving cycles
Sequence of operationNone
P0452 and P0453
RltdDTC
P0452Evaporative emission control system pressure
sensor/switch low input
Related DTCs
P0453Evaporative emission control system pressure
sensor/switch high input
Main sensors/componentsVapor pressure sensor
Required sensors/componentsRelated sensors/componentsMass air flow meter, Engine coolant temperature
sensor
Frequency of operationOnce per driving cycle
Duration17 sec.
MIL operation2 driving cycles
Sequence of operationNone
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
A21364
17 Cowl Side J/B LHECM
Combination Meter
SPD E8
2E 28
2Q70
16
C15J14
J/C
B B SB SB V
15
C15SB
From Vehicle Speed Sensor
- DIAGNOSTICSENGINE
DI-275
468 Author: Date:
2004 LAND CRUISER (RM1071U)
MONITOR STRATEGY
Related DTCsP0500Vehicle speed sensor ºAº pulse input error
Main sensorsVehicle speed sensor
Required sensors/componentsRelated sensorsPark/Neutral position switch, Engine coolant tem-
perature sensor, Combination meter
Frequency of operationContinuous
Duration500 output X 4 times
MIL operationImmediate
Sequence of operationNone
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)
Vehicle speed is 9 km/h (6 mph) or more4 sec.-
Park/neutral position switchOFF
Transfer neutral switchNot ºNº position
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
Sensor signalNo pulse input
WIRING DIAGRAM
- DIAGNOSTICSENGINE
DI-287
480 Author: Date:
2004 LAND CRUISER (RM1071U)
MONITOR STRATEGY
Related DTCsP0505Idle air control malfunction
Main sensors/componentsCrankshaft position sensor
Required sensors/componentsRelated sensors/componentsVehicle speed sensor, Engine coolant tempera-
ture sensor
Frequency of operationFunctional check: Once per trip
Range check: Continuous
DurationFunctional check: 10 min.
Range check: 10 sec.
MIL operationFunctional check: 2 driving cycles
Range check: Immediate
Sequence of operationNone
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)
Functional check:
Precondition is met when both of the fol-
lowing are metA and B
A. Intake air flow rate learnings is enabled3 sec.-
B. EngineRunning
Range check:
Output signal duty10%90%
Battery voltage10 V-
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
Functional check:
Case 1:
All of the following conditions are met:A, B and C
A. Engine RPM - target engine RPM (History that vehicle
had run for 10 km/h (6.2 mph) or more)
Less than -100 rpm or more than 200 rpm
(A/C ON or park/neutral position switch ON)
or
Less than -100 rpm or more than 150 rpm
(A/C OFF and park/neutral position switch OFF)
B. Number of fall judgment5 times or more
C. Intake air control flow rate learning value
Value when fail is judged first + 3.31 L/sec. or more
or
Value when fail is judged first - 3.31 L/sec. or less
Case 2:
Both or the following condition are met:A and B
A. Engine RPM - target engine RPM (History that vehicle
had run for 10 km/h (6.2 mph) or more)
Less than -100 rpm or more than 200 rpm
(A/C ON or park/neutral position switch ON)
or
Less than -100 rpm or more than 150 rpm
(A/C OFF and park/neutral position switch OFF)
B. Intake air control flow rate learning value is for 5 sec.2.48 L/sec. or less or 11 L/sec. or more
- DIAGNOSTICSENGINE
DI-37
230 Author: Date:
2004 LAND CRUISER (RM1071U)P0110
(DI-68)
Intake Air Temperature Circuit
Open or short in intake air temperature sensor circuit
Intake air temperature sensor (built in mass air flow meter)
ECM
P0112
(DI-68)Intake Air Temperature Circuit
Low InputOpen or short in intake air temperature sensor circuit
Intake air temperature sensor (built in mass air flow meter)
ECM
P0113
(DI-68)Intake Air Temperature Circuit
High InputOpen or short in intake air temperature sensor circuit
Intake air temperature sensor (built in mass air flow meter)
ECM
P0115
(DI-75)Engine Coolant Temperature Cir-
cuitOpen or short in engine coolant temperature sensor circuit
Engine coolant temperature sensor
ECM
P0116
(DI-82)Engine Coolant Temperature Cir-
cuit Range/Performance Prob-
lem
Engine coolant temperature sensor
P0117
(DI-75)Engine Coolant Temperature Cir-
cuit Low InputOpen or short in engine coolant temperature sensor circuit
Engine coolant temperature sensor
ECM
P0118
(DI-75)Engine Coolant Temperature Cir-
cuit High InputOpen or short in engine coolant temperature sensor circuit
Engine coolant temperature sensor
ECM
P0120
(DI-84)Throttle Pedal Position Sensor/
Switch ºAº CircuitThrottle control motor and sensor
ECM
P0121
(DI-97)Throttle/Pedal Position Sensor/
Switch ºAº Circuit Range/Perfor-
mance Problem
Throttle control motor and sensor
P0122
(DI-84)Throttle/Pedal Position Sensor/
Switch ºAº Circuit Low Input
Throttle control motor and sensor
Short in VTA1 circuit
Open in VC circuit
ECM
P0123
(DI-84)Throttle/Pedal Position Sensor/
Switch ºAº Circuit High Input
Throttle control motor and sensor
Open in VTA1 circuit
Open in E2 circuit
VC and VTA1 circuit are short-circuited
ECM
P0125
(DI-99)Insufficient Coolant Temperature
for Closed Loop Fuel ControlCooling system
Engine coolant temperature sensor
Thermostat
P0128
(DI-102)Coolant Thermostat (Coolant
Temperature Below Thermostat
Regulating Temperature)Thermostat
Cooling system
Engine coolant temperature sensor
ECM
P0130
(DI-106)Oxygen Sensor Circuit
(Bank 1 Sensor 1)
Open or short in heated oxygen sensor circuit
Heated oxygen sensor
Heated oxygen sensor heater
EFI or ECD relay
Air induction system
Fuel pressure
Injector
ECM
- DIAGNOSTICSENGINE
DI-39
232 Author: Date:
2004 LAND CRUISER (RM1071U)P0171
(DI-147)
System too Lean (Bank 1)
Air induction system
Injector blockage
Mass air flow meter
Engine coolant temperature sensor
Fuel pressure
Gas leakage on exhaust system
Open or short in heated oxygen sensor (bank 1 sensor 1)
circuit
Heated oxygen sensor (bank 1 sensor 1)
Heated oxygen sensor heater
EFI or ECD relay
PCV piping
ECM
P0172
(DI-147)System too Rich (Bank 1)
Injector leak, blockage
Mass air flow meter
Engine coolant temperature sensor
Ignition system
Fuel pressure
Gas leakage in exhaust system
Open or short in heated oxygen sensor (bank 1 sensor 1)
circuit
Heated oxygen sensor (bank 1 sensor 1)
ECM
P0174
(DI-147)System too Lean (Bank 2)
Air induction system
Injector blockage
Mass air flow meter
Engine coolant temperature sensor
Fuel pressure
Gas leakage on exhaust system
Open or short in heated oxygen sensor (bank 2 sensor 1)
circuit
Heated oxygen sensor (bank 2 sensor 1)
Heated oxygen sensor heater
EFI or ECD relay
PCV piping
ECM
P0175
(DI-147)System too Rich (Bank 2)
Injector leak, blockage
Mass air flow meter
Engine coolant temperature sensor
Ignition system
Fuel pressure
Gas leakage in exhaust system
Open or short in heated oxygen sensor (bank 2 sensor 1)
circuit
Heated oxygen sensor (bank 2 sensor 1)
ECM
P0220
(DI-84)Throttle/Pedal Position Sensor/
Switch ºBº CircuitThrottle control motor and sensor
ECM
P0222
(DI-84)Throttle/Pedal Position Sensor/
Switch ºBº Circuit Low Input
Throttle control motor and sensor
Short in VTA2 circuit
Open in VC circuit
ECM
P0223
(DI-84)Throttle/Pedal Position Sensor/
Switch ºBº Circuit High Input
Throttle control motor and sensor
Open in VTA2 circuit
Open in E2 circuit
VC and VTA2 circuit are short-circuited
ECM
DI-40
- DIAGNOSTICSENGINE
233 Author: Date:
2004 LAND CRUISER (RM1071U)P0230
(DI-162)
Fuel Pump Primary Circuit
Open or short in fuel pump relay circuit
Fuel pump relay
Circuit opening relay
Fuel pump
ECM
-
P0300
(DI-167)Random/Multiple Cylinder Misfire
Detected*2
P0301
(DI-167)Cylinder 1 Misfire Detected
Open or short in engine wire
*2
P0302
(DI-167)Cylinder 2 Misfire Detected
Open or short in engine wire
Connector connection
Vacuum hose connection
*2
P0303
(DI-167)Cylinder 3 Misfire Detected
Vacuum hose connection
Ignition system
Injector*2
P0304
(DI-167)Cylinder 4 Misfire Detected
Fuel pressure
Mass air flow meter
Engine coolant temperature sensor
*2
P0305
(DI-167)Cylinder 5 Misfire Detected
Engine coolant temperature sensor
Compression pressure
Valve clearance
*2
P0306
(DI-167)Cylinder 6 Misfire Detected
Valve clearance
Valve timing
PCV piping*2
P0307
(DI-167)Cylinder 7 Misfire Detected
ECM
*2
P0308
(DI-167)Cylinder 8 Misfire Detected*2
P0325
(DI-186)Knock Sensor 1 Circuit (Bank 1
or Single Sensor)Open or short in knock sensor 1 circuit
Knock sensor 1 (looseness)
ECM
P0330
(DI-186)Knock Sensor 2 Circuit (Bank 2)
Open or short in knock sensor 2 circuit
Knock sensor 2 (looseness)
ECM
P0335
(DI-191)Crankshaft Position Sensor ºAº
Circuit
Open or short in crankshaft position sensor circuit
Crankshaft position sensor
Signal plate
ECM
P0339
(DI-191)Crankshaft Position Sensor ºAº
Circuit Intermittent
Open or short in crankshaft position sensor circuit
Crankshaft position sensor
Signal plate
ECM
-
P0340
(DI-197)Camshaft Position Sensor ºAº
Circuit (Bank 1 or Single Sensor)Open or short in camshaft position sensor circuit
Camshaft position sensor
P0341
(DI-197)Camshaft Position Sensor ºAº
Circuit Range/Performance
(Bank 1 or Single Sensor)
Camshaft osition sensor
LH camshaft timing pulley
Jumping teeth of timing belt
ECM
P0351
(DI-202)Ignition Coil ºAº Primary/Second-
ary Circuit
Open or short in IGF 1 and IGT 1 circuit from No. 1 ignition coil
with igniter to ECM
No. 1 ignition coil with igniter
Ignition system
ECM
P0352
(DI-202)Ignition Coil ºBº Primary/Second-
ary Circuit
Open or short in IGF 2 and IGT 2 circuit from No. 2 ignition coil
with igniter to ECM
No. 2 ignition coil with igniter
Ignition system
ECM
DI1L5-18
A21338
Fuel Pump Resister Knock Sensor 2
Heated Oxygen Sensor
(Bank 1 Sensor 1) Heated Oxygen Sensor
(Bank 2 Sensor 1)VSV for EVAP
Combination Meter
Ignition Coil with Igniter
ECMKnock Sensor 1
Injector
Throttle Control
Motor and Sensor
Mass Air Flow Meter
Engine Coolant
Temperature Sensor
Camshaft
Position Sensor
Crankshaft
Position Sensor
VSV for CCV
Park/neutral Position Switch DLC3
Vapor Pressure Sensor VSV for
Pressure Switching Valve
Accelerator Pedal Assembly
(Accelerator Pedal Position Sensor)
Cowl Side J/B LH:
STOP Fuse
EFI or ECD No. 2 Fuse
Engine Room R/B and J/B:
Circuit Opening Relay
Fuel Pump Relay
EFI or ECD Relay
STARTER Relay
EFI or ECD No. 1 Fuse
ECTS Fuse
- DIAGNOSTICSENGINE
DI-45
238 Author: Date:
2004 LAND CRUISER (RM1071U)
PARTS LOCATION