1998 TOYOTA LAND CRUISER coolant temperature
[x] Cancel search: coolant temperaturePage 1319 of 3115
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
Page 1396 of 3115
- 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
Page 1398 of 3115
- 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
Page 1399 of 3115
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
Page 1405 of 3115
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
Page 1407 of 3115
DI-4
- DIAGNOSTICSENGINE
197 Author: Date:
The diagnosis system operates in ºnormal modeº
during normal vehicle use. In ºnormal modeº, 2 trip
detection logic* is used to ensure accurate detec-
tion of malfunctions. A ºcheck modeº is also avail-
able to technicians as an option. In ºcheck modeº,
1 trip detection logic is used for simulating malfunc-
tion symptoms and increasing the system's ability to
detect malfunctions, including intermittent malfunc-
tions (hand-held tester only) (See step 3).
*2 trip detection logic:
When a malfunction is first detected, the malfunc-
tion is temporarily stored in the ECM memory. This
is known as 1st trip detection. If the ignition switch
is turned OFF and then ON again, and the same
malfunction is detected again, the MIL will illumi-
nate. This is known as 2nd trip detection.
Freeze frame data:
The freeze frame data records the engine condi-
tions (fuel system, calculated load, engine coolant
temperature, fuel trim, engine speed, vehicle
speed, etc.) when a malfunction is detected. When
troubleshooting, freeze frame data can help deter-
mining if the vehicle was running or stopped, if the
engine was warmed up or not, if the air-fuel ratio
was lean or rich, and other data from the time the
malfunction occurred.
Priorities for troubleshooting:
When multiple DTCs occur, find out the order in which the DTCs
should be inspected by checking the component's DTC chart.
If no instructions are written in the DTC chart, check DTCs in the
following order of priority:
(1) DTCs other than fuel trim malfunction DTCs
(P0171, P0172, P0174 and P0175) and misfire
DTCs (P0300 to P0308).
(2) Fuel trim malfunction DTCs (P0171, P0172, P0174
and P0175).
(3) Misfire DTCs (P0300 to P0308).
Page 1411 of 3115
DI-8
- DIAGNOSTICSENGINE
201 Author: Date:
(6) Start the engine. The MIL should turn off after the
engine starts.
(7) Simulate the conditions of the malfunction de-
scribed by the customer.
(8) After simulating the malfunction conditions, use the
hand-held tester diagnosis selector to check the
DTC, freeze frame data and other data.
(9) After checking the DTC, inspect the applicable cir-
cuit.
(b) Clearing DTCs using the OBD ll scan tool or the hand-
held tester.
(1) Connect the OBD ll scan tool or the hand-held tes-
ter to the DLC3.
(2) Turn the ignition switch ON.
(3) Erase DTCs and freeze frame data with the OBD II
scan tool (complying with SAE J1978) or the hand-
held tester. For the hand-held tester: 1) enter the
following menus: DIAGNOSIS ENHANCED OBD II
/ DTC INFO / CLEAR CODES; and 2) press YES.
For the OBD II scan tool, see its instruction manual.
(c) Clearing the DTCs without using the OBD ll scan tool or
the hand-held tester.
Remove the EFI or ECD No. 1 and ETCS fuses from the
engine room J/B for more than 60 seconds, or disconnect
the battery terminal for more than 60 seconds.
After disconnecting the battery terminal, perform the ºINI-
TIALIZEº procedure.
4. FAIL-SAFE CHART
If any of the following code is recorded, the ECM enters fail-safe mode.
DTC No.Fail-Safe OperationFail-Safe Deactivation Conditions
P0031
P0032
P0037
P0038
P0051
P0052
P0057
P0058
The heater circuit in which an abnormality is detected is
turned offIgnition switch OFF
P0100
P0102
P0103Ignition timing is calculated from engine speed and throttle
angleºPassº condition detected
P0110
P0112
P0113
Intake air temperature is fixed at 20°C (68°F)ºPassº condition detected
P0115
P0117
P0118
Engine coolant temperature is fixed at 80°C (176°F)ºPassº condition detected
Page 1417 of 3115
DI-14
- DIAGNOSTICSENGINE
207 Author: Date:
7. DATA LIST
HINT:
Using the hand-held tester DATA LIST allows switch, sensor, actuator and other item values to be read with-
out removing any parts. Reading the DATA LIST early in troubleshooting is one way to shorten labor time.
NOTICE:
In the table below, the values listed under ºNormal Conditionº are reference values. Do not depend
solely on these reference values when deciding whether a part is faulty or not.
(a) Warm up the engine.
(b) Turn the ignition switch OFF.
(c) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(d) Turn the ignition switch ON.
(e) Push the ºONº button of the hand-held tester.
(f) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST.
(g) According to the display on tester, read the ºDATA LISTº.
ItemMeasurement Item/Range
(Display)Normal Condition*Diagnostic Note
INJECTOR
Injection period of the
No. 1 cylinder/
Min.: 0 ms, Max.: 32.64 ms
Idling: 2.1 to 3.9 ms-
IGN ADVANCE
Ignition timing advance
for No.1 cylinder/
Min.: -64 deg., Max.: 63.5 deg.
Idling: BTDC 5 to 25°-
CALC LOADCalculated load by ECM/
Min.: 0%, Max.: 100%Idling: 12.5 to 19.7%
Racing without load (2,500 rpm):
10.7 to 17.9%
-
MAFAir flow rate from MAF sensor/
Min.: 0 gm/s, Max.: 655 gm/s
Idling:
4.1 to 6.4 gm/sec.
Racing without load (2,500 rpm):
12.5 to 20.8 gm/sec.
If value is approximately 0.0 gm/s:
Mass air flow meter power
source circuit open
VG circuit open or short
If value is 160.0 gm/s or more:
E2G circuit open
ENGINE SPDEngine Speed/
Min.: 0 rpm, Max.: 16,383 rpmIdling:
650 to 750 rpm-
COOLANT TEMPCoolant temperature/
Min.: -40°C, Max.: 140°CAfter warming up:
80 to 95°C (176 to 203°F)If value is -40C (-40F): sensor
circuit is open.
INTAKE AIRIntake air temperature/
Min.: -40 °C, Max.: 140 °CEquivalent to ambient temp.
(After cold soak)
circuit is oen.
If value is 140C (284F) or
more: sensor circuit is shorted.
THROTTLE POSAbsolute throttle position sensor/
Min.: 0%, Max.: 100%Throttle fully closed: 10 to 24%
Throttle fully open: 66 to 98%Read value with the ignition switch
ON (Do not start engine).
THROTTLE INITIALThrottle fully closed rearing value0.5 to 0.9 V-
CTP SWClosed throttle position switch/
ON or OFFThrottle fully closed: ON
Throttle open: OFF-
VEHICLE SPDVehicle speed/
Min.: 0 km/h, Max.: 255 km/hVehicle stopped: 0 km/h (0 mph)Speed indicated on speedometer
O2S B1 S1
Oxygen sensor output voltage of
the bank 1 sensor 1/
Min.: 0 V, Max.: 1.275 V
Idli 01t 09V
Performing INJ VOL or A/F CON-
TROL function of ACTIVE TEST
enables the technician to check
the voltage output of each sensor.
O2S B2 S1
Oxygen sensor output voltage of
the bank 2 sensor 1/
Min.: 0 V, Max.: 1.275 V
Idling: 0.1 to 0.9 VPerforming INJ VOL or A/F CON-
TROL function of ACTIVE TEST
enables the technician to check
the voltage output of each sensor.