1998 TOYOTA LAND CRUISER ESP
[x] Cancel search: ESPPage 1189 of 3115
DI-140
- DIAGNOSTICSENGINE
333 Author: Date:
2004 LAND CRUISER (RM1071U) Fuel cut
Operating
Time after engine start200 sec.-
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
Case 1 (Output voltage (crack)):
Following conditions are met:A, B and C
A. Cumulative rear heated oxygen sensor monitor time300 sec. or more
B. Time while rear heated oxygen sensor voltage is less
than 0.05 V180 sec. or more
C. Maximum rear heated oxygen sensor rich time (0.45 V or
more)Less than 20 sec.
Case 2 (Output voltage):
Number of heated oxygen sensor voltage ºswitchingº0 time or less
ºSwitchingº is counted when the sensor signal crosses the minimum or maximum voltage
Minimum voltageLess than 0.4 V
Maximum voltage0.5 V or more
Case 3 (Slow response):
Time until the rear oxygen sensor voltage drops to 0.2 V
after fuel cut starts operating6 sec. or more
COMPONENT OPERATING RANGE
ParameterStandard Value
Heated oxygen sensor voltage0 to 1 V
O2S TEST RESULT
Refer to page DI-3 for detailed information.
Rear HO2S voltage monitor
If the HO2S sensor voltage is out of the standard value, the ECM interprets this as a malfunction.
TEST IDDescription of TEST DATAConversion FactorUnit
$07Minimum rear HO2S voltageN/AV
$08Maximum rear HO2S voltageN/AV
If the time required to change is out of the standard value, the ECM interprets this as a malfunction.
TEST IDDescription of TEST DATAConversion FactorUnit
$31Time to change from Lean (<0.4 V)
to Rich (0.5 V)N/Asec.
$32Time to change from Rich (0.5
V) to Lean (<0.4 V)N/Asec.
Rear HO2S slow response monitor
If the elapsed time is out of the standard value, the ECM interprets this as a malfunction.
TEST IDDescription of TEST DATAConversion FactorUnit
$37Until rear HO2S voltage drops to
0.2 V after fuel-cut startingN/Asec.
Page 1201 of 3115
A21041
32 1 4 5
-20 0 20 40 60 80 100 0.1 0.2 0.3 0.51 2 3 5 10 20 30
TEMPERATUREC(F)
RESISTANCE kW
(-4) (32) (68) (140)(104) (212)(176)
Air
VG
E2G+B
THA E2
Acceptable
DI-152
- DIAGNOSTICSENGINE
345 Author: Date:
2004 LAND CRUISER (RM1071U)
4 Check mass air flow meter.
PREPARATION:
Remove the mass air flow meter.
CHECK:
(a) Inspect output voltage.
(1) Apply battery voltage across terminals +B and E2G.
(2) Connect the positive (+) tester prove to terminal VG,
and negative (-) tester prove to terminal E2G.
(3) Blow air into the mass air flow sensor, and check
that the voltage fluctuates.
(b) Inspect resistance.
(1) Measure the resistance between terminals of the in-
take air temperature sensor.
Resistance:
Tester ConnectionTemperatureSpecified Condition
-20C (-4F)13.6 to 18.4 kW
THA (4) - E2 (5)20C (68F)2.21 to 2.69 kWTHA (4) E2 (5)
60C (140F)0.49 to 0.67 kW
NG Replace mass air flow meter.
OK
Page 1243 of 3115
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
Page 1254 of 3115
- DIAGNOSTICSENGINE
DI-205
398 Author: Date:
2004 LAND CRUISER (RM1071U)
MONITOR STRATEGY
P0351No. 1 ignition coil with igniter circuit malfunction
P0352No. 2 ignition coil with igniter circuit malfunction
P0353No. 3 ignition coil with igniter circuit malfunction
RltdDTCP0354No. 4 ignition coil with igniter circuit malfunctionRelated DTCsP0355No. 5 ignition coil with igniter circuit malfunction
P0356No. 6 ignition coil with igniter circuit malfunction
P0357No. 7 ignition coil with igniter circuit malfunction
P0358No. 8 ignition coil with igniter circuit malfunction
Required sensors/componentsIgniter
Frequency of operationContinuous
Duration0.256 sec.
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)
Engine speed-1,500 rpm
Either of the following conditions is met:A or B
A. Following conditions are met:(a) and (b)
(a) Engine speed-500 rpm
(b) Battery voltage6 V-
B. Following conditions are met:(a) and (b)
(a) Engine speed500 rpm-
(b) Battery voltage10 V-
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
ºIgnition signal fail countºMore than 2
ºIgnition signal fail countº is as follows:When IGF should have returned despite sending IGT.
COMPONENT OPERATING RANGE
Standard Value
Confirmed signal number = ignition signal number
Page 1351 of 3115
DI-302
- DIAGNOSTICSENGINE
495 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2102 Throttle Actuator Control Motor Circuit Low
DTC P2103 Throttle Actuator Control Motor Circuit High
CIRCUIT DESCRIPTION
The throttle motor is operated by the ECM and it opens and closes the throttle valve.
The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the
throttle body. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to
control the throttle motor and monitor the throttle opening angle as the ECM responds to driver inputs.
HINT:
This Electrical Throttle Control System (ETCS) does not use a throttle cable.
DTC No.DTC Detection ConditionTrouble Area
P2102
Conditions (a) and (b) continue for 2.0 seconds:
(a) Throttle control motor output duty 80 % or more
(b) Throttle control motor current 0.5 A or lessOpen in throttle control motor and sensor circuit
Throttle control motor and sensor
ECM
P2103
Either of following conditions is met.
(a) Throttle control motor current 10 A or more (0.1 sec)
(b) Throttle control motor current 7 A or more (0.6 sec.)
Short in throttle control motor and sensor circuit
Throttle control motor and sensor
Throttle valve
Throttle body
ECM
MONITOR DESCRIPTION
The ECM monitors the current through the electronic throttle motor and detects malfunctions or open circuit
in the throttle motor based on the voltage of the current. When the current deviates from the standard, the
ECM concludes that there is a fault in the throttle motor.
Or, if the throttle valve is not functioning properly (for example, stuck ON) the ECM concludes that there is
a fault and turns on the MIL and a DTC is set.
Example:
When the current is more than 10 A. Or the current is less than 0.5 A when the motor driving duty ratio is
exceeding 80%. The ECM concludes that the current is out of range, turns on the MIL and a DTC is set.
FAIL SAFE
If the ETCS (Electronic Throttle Control System) has a malfunction, the ECM cuts off current to the throttle
control motor. The throttle control valve returns to a predetermined opening angle (approximately 16°) by
the force of the return spring. The ECM then adjusts the engine output by controlling the fuel infection (inter-
mittent fuel-cut) and ignition timing in accordance with the accelerator pedal opening angle to enable the
vehicle to continue at a minimum speed.
If the accelerator pedal is depressed firmly and slowly, the vehicle can be driven slowly.
If a ºpassº condition is detected and then the ignition switch is turned OFF, the fail-safe operation will stop
and the system will return to normal condition.
DIC2O-01
Page 1355 of 3115
DI-306
- DIAGNOSTICSENGINE
499 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2111 Throttle Actuator Control System
-Stuck Open
DTC P2112 Throttle Actuator Control System
-Stuck Closed
CIRCUIT DESCRIPTION
The throttle motor is operated by the ECM and it opens and closes the throttle valve using gears. The open-
ing angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body.
The throttle position sensor provides feedback to the ECM to control the throttle motor and set the throttle
valve angle in response to driver input.
HINT:
This Electrical Throttle Control System (ETCS) does not use a throttle cable.
DTC No.DTC Detection ConditionTrouble Area
P2111Throttle motor locked during ECM order to close.Throttle control motor and sensor circuit
Throttle control motor and sensor
P2112Throttle motor locked during ECM order to open.
Throttle control motor and sensor
Throttle body
Throttle valve
MONITOR DESCRIPTION
The ECM concludes that there is a malfunction of the ETCS (Electronic Throttle Control System) when the
throttle valve remains at a fixed angle despite high drive current from the ECM. The ECM will turn on the MIL
and a DTC is set.
FAIL SAFE
If the ETCS (Electronic Throttle Control System) has a malfunction, the ECM cuts off current to the throttle
control motor. The throttle control valve returns to a predetermined opening angle (approximately 16°) by
the force of the return spring. The ECM then adjusts the engine output by controlling the fuel infection (inter-
mittent fuel-cut) and ignition timing in accordance with the accelerator pedal opening angle to enable the
vehicle to continue at a minimum speed.
If the accelerator pedal is depressed firmly and slowly, the vehicle can be driven slowly.
If a ºpassº condition is detected and then the ignition switch is turned OFF, the fail-safe operation will stop
and the system will return to normal condition.
DIC2P-01
Page 1364 of 3115
- DIAGNOSTICSENGINE
DI-315
508 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2119 Throttle Actuator Control Throttle Body
Range/Performance
CIRCUIT DESCRIPTION
The Electric Throttle Control System (ETCS) is composed of a throttle motor that operates the throttle valve,
a throttle position sensor that detects the opening angle of the throttle valve, an accelerator pedal position
sensor that detects the accelerator pedal position, and the ECM that controls the ETCS system.
The ECM operates the throttle motor to position the throttle valve for proper response to driver inputs. The
throttle position sensor, mounted on the throttle body, detects the opening angle of the throttle valve and
provides this signal to the ECM so that the ECM can regulate the throttle motor.
DTC No.DTC Detection ConditionTrouble Area
P2119Throttle opening angle continues to vary greatly from target
throttle opening angleElectric throttle control system
Throttle body
MONITOR DESCRIPTION
The ECM determines the ºactualº throttle angle based on the throttle position sensor signal. The ºactualº
throttle position is compared to the ºtargetº throttle position commanded by the ECM. If the difference of
these two values exceeds a specified limit, the ECM interprets this as a fault in the ETCS (Electronic Throttle
Control System). The ECM turns on the MIL and a DTC is set.
FAIL SAFE
If the ETCS (Electronic Throttle Control System) has a malfunction, the ECM cuts off current to the throttle
control motor. The throttle control valve returns to a predetermined opening angle (approximately 16°) by
the force of the return spring. The ECM then adjusts the engine output by controlling the fuel infection (inter-
mittent fuel-cut) and ignition timing in accordance with the accelerator pedal opening angle to enable the
vehicle to continue at a minimum speed.
If the accelerator pedal is depressed firmly and slowly, the vehicle can be driven slowly.
If a ºpassº condition is detected and then the ignition switch is turned OFF, the fail-safe operation will stop
and the system will return to normal condition.
MONITOR STRATEGY
Related DTCsP2119Electronic throttle control system failure
Rid / tMain sensorsThrottle actuator motorRequired sensors/componentsRelated sensorsThrottle position sensor
Frequency of operationContinuous
Duration1 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever the follow-
ing DTCs are not presentSee ºList of disable a monitorº (on page DI-3)
The typical enabling condition is not avail-
able-
DIC2R-01
Page 1395 of 3115
DI1L4-19
DI-36
- DIAGNOSTICSENGINE
229 Author: Date:
2004 LAND CRUISER (RM1071U)
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may not be exactly the same as your reading due to the type of instrument
or other factors.
If a malfunction code is displayed during the DTC check in check mode, check the circuit for the codes listed
in the table below. For details of each code, refer to the ºSee pageº under the respective ''DTC No.'' in the
DTC chart.
DTC No.
(See page)Detection ItemTrouble AreaMIL*1Memory
P0031
(DI-49)Oxygen Sensor Heater Control
Circuit Low (Bank 1 Sensor 1)
Open in heater circuit of heated oxygen sensor
Heated oxygen sensor heater
EFI or ECD relay
ECM
P0032
(DI-49)Oxygen Sensor Heater Control
Circuit High (Bank 1 Sensor 1)
Short in heater circuit of heated oxygen sensor
Heated oxygen sensor heater
EFI or ECD relay
ECM
P0037
(DI-49)Oxygen Sensor Heater Control
Circuit Low (Bank 1 Sensor 2)
Open in heater circuit of heated oxygen sensor
Heated oxygen sensor heater
EFI or ECD relay
ECM
P0038
(DI-49)Oxygen Sensor Heater Control
Circuit High (Bank 1 Sensor 2)
Short in heater circuit of heated oxygen sensor
Heated oxygen sensor heater
EFI or ECD relay
ECM
P0051
(DI-49)Oxygen Sensor Heater Control
Circuit Low (Bank 2 Sensor 1)
Open in heater circuit of heated oxygen sensor
Heated oxygen sensor heater
EFI or ECD relay
ECM
P0052
(DI-49)Oxygen Sensor Heater Control
Circuit High (Bank 2 Sensor 1)
Short in heater circuit of heated oxygen sensor
Heated oxygen sensor heater
EFI or ECD relay
ECM
P0057
(DI-49)Oxygen Sensor Heater Control
Circuit Low (Bank 2 Sensor 2)
Open in heater circuit of heated oxygen sensor
Heated oxygen sensor heater
EFI or ECD relay
ECM
P0058
(DI-49)Oxygen Sensor Heater Control
Circuit High (Bank 2 Sensor 2)
Short in heater circuit of heated oxygen sensor
Heated oxygen sensor heater
EFI or ECD relay
ECM
P0100
(DI-57)Mass or Volume Air Flow Circuit
Open or short in mass air flow meter circuit
Mass air flow meter
ECM
P0101
(DI-65)Mass or Volume Air Flow Circuit
Range/Performance ProblemMass air flow meter
P0102
(DI-57)Mass or Volume Air Flow Circuit
Low InputOpen or short in mass air flow meter circuit
Mass air flow meter
ECM
P0103
(DI-57)Mass or Volume Air Flow Circuit
High InputOpen or short in mass air flow meter circuit (+B circuit)
Mass air flow meter
ECM