Dtc 42 Vehicle Speed Sensor Signal Circuit Malfunction

Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150 - СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK SPEEDOMETER (OPERATION)

CHECK ECM (SP1 VOLTAGE)

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)

DTC 42 Vehicle Speed Sensor Signal Circuit Malfunction

DESCRIPTION

The vehicle speed sensor outputs a pulse signal according to the revolution of the rotor shaft, which is rotated by the transmission output shaft via the driven gear. After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the ECM. The ECM determines the vehicle speed based on the frequency of this pulse signal.


Dtc 42 Vehicle Speed Sensor Signal Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

DTC No.DTC Detection ConditionTrouble Area
42All conditions below are detected continuously for 8 sec. or more:
Vehicle speed signal: 0 km/h (0 mph).
Engine speed: 2000 to 3300 rpm.
Engine coolant temperature: 70°C (158°F) or higher.
Accelerator pedal opening amount: 60% or more.
Open or short in vehicle speed sensor circuit
Vehicle speed sensor
Combination meter
ECM

WIRING DIAGRAM

Dtc 42 Vehicle Speed Sensor Signal Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

INSPECTION PROCEDURE

1.CHECK SPEEDOMETER (OPERATION)

Drive the vehicle and check if the operation of the speedometer in the combination meter assembly is normal.

  • OK:
  • The speedometer operates normally according to vehicle speed.
  • УКАЗАНИЕ:
  • The vehicle speed sensor is operating normally if the speedometer display is normal.
NG
CHECK SPEEDOMETER CIRCUIT
OK
2.CHECK ECM (SP1 VOLTAGE)
Dtc 42 Vehicle Speed Sensor Signal Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Move the shift lever to N.

Jack up the vehicle.

Turn the ignition switch to ON.

Check the waveform between the specified terminals of the ECM connectors as the rear wheels are turned slowly.

  • OK:
  • Tester ConnectionSwitch ConditionSpecified Condition
    G61-9 (SPD) - C101-14 (E1)Ignition switch ONCorrect waveform is as shown
Text in Illustration
*aComponent with harness connected
(ECM)
NG
Перейдите к шагу 3
OK
REPLACE ECM
3.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)

Disconnect the ECM connector.

Disconnect the combination meter assembly connector.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance (Check for Open):
  • Tester ConnectionConditionSpecified Condition
    G61-9 (SPD) - G6-32AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • Tester ConnectionConditionSpecified Condition
    G61-9 (SPD) or G6-32 - Body groundAlways10 kΩ or higher

Reconnect the ECM connector.

Reconnect the combination meter assembly connector.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM

Dtc 18 (5) Spill Control Circuit Malfunction

Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150 - СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT SPILL CONTROL VALVE

CHECK ECM (SPV+ VOLTAGE)

CHECK ECM (SPV- VOLTAGE)

CHECK HARNESS AND CONNECTOR (ECM - SPILL CONTROL VALVE)

DTC 18 (5) Spill Control Circuit Malfunction

DESCRIPTION

The ECM operates the spill control valve to control the fuel injection volume. The spill control valve is mounted on the injection pump. The spill control valve's solenoid valve opens and closes the injection pressure release port. During fuel injection, the spill control valve is on (closed). The ECM determines the basic fuel injection amount based on the engine speed and accelerator pedal position. Then the ECM uses several other correctional factors to determine the final fuel injection amount. After fuel injection has begun, the ECM ensures the final fuel injection amount by performing the following: 1) by counting the number of NE signals, and 2) by turning the spill control valve from on (closed) to off (open) (injection pressure release port is open).


Dtc 18 (5) Spill Control Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

DTC No.DTC Detection ConditionTrouble Area
18 (5)Open or short in the spill control valve circuit at 500 rpm or more.
Open or short in spill control valve circuit
Spill control valve
ECM

WIRING DIAGRAM

Dtc 18 (5) Spill Control Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

INSPECTION PROCEDURE

1.INSPECT SPILL CONTROL VALVE

Inspect the spill control valve (See page ).

NG
REPLACE INJECTION PUMP ASSEMBLY
OK
2.CHECK ECM (SPV+ VOLTAGE)
Dtc 18 (5) Spill Control Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Disconnect the spill control valve connector.

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionSwitch ConditionSpecified Condition
    C101-12 (SPV+) - C101-14 (E1)Ignition switch ON11 to 14 V
Text in Illustration
*aComponent with harness connected
(ECM)

Reconnect the spill control valve connector.

NG
REPLACE ECM
OK
3.CHECK ECM (SPV- VOLTAGE)
Dtc 18 (5) Spill Control Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionSwitch ConditionSpecified Condition
    C101-25 (SPV-) - C101-14 (E1)Ignition switch ON11 to 14 V

While idling, check the waveform with an oscilloscope connected between the specified terminals of the ECM connector.

  • OK:
  • Tester ConnectionConditionSpecified Condition
    C101-25 (SPV-) - C101-14 (E1)IdlingCorrect waveform is as shown
Text in Illustration
*aComponent with harness connected
(ECM)
*bSPV- signal waveform
NG
Перейдите к шагу 4
OK
CHECK FOR INTERMITTENT PROBLEMS
4.CHECK HARNESS AND CONNECTOR (ECM - SPILL CONTROL VALVE)

Disconnect the spill control valve connector.

Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance (Check for Open):
  • Tester ConnectionConditionSpecified Condition
    C106-2 - C101-12 (SPV+)AlwaysBelow 1 Ω
    C106-1 - C101-25 (SPV-)AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • Tester ConnectionConditionSpecified Condition
    C106-2 or C101-12 (SPV+) - Body groundAlways10 kΩ or higher
    C106-1 or C101-25 (SPV-) - Body groundAlways10 kΩ or higher

Reconnect the spill control valve connector.

Reconnect the ECM connector.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM

Dtc 39 (5) Fuel Temperature Sensor Circuit Malfunction

Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150 - СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

When using intelligent tester:

READ VALUE USING INTELLIGENT TESTER (FUEL TEMPERATURE)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN WIRE HARNESS)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN ECM)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN WIRE HARNESS)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN ECM)

When not using intelligent tester:

CHECK ECM (THF VOLTAGE)

INSPECT FUEL TEMPERATURE SENSOR

CHECK HARNESS AND CONNECTOR (ECM - FUEL TEMPERATURE SENSOR)

DTC 39 (5) Fuel Temperature Sensor Circuit Malfunction

DESCRIPTION

The fuel temperature sensor senses the fuel temperature. A thermistor built into the sensor changes its resistance according to the fuel temperature. The lower the fuel temperature, the higher the thermistor resistance value, and the higher the fuel temperature, the lower the thermistor resistance value (see Fig. 1).


The fuel temperature sensor is connected to the ECM. The 5 V power source voltage from the ECM is applied to the fuel temperature sensor from terminal THF via resistor R. That is, resistor R and the fuel temperature sensor are connected in series. When the resistance value of the fuel temperature sensor changes in accordance with changes in the fuel temperature, the voltage at terminal THF also changes. Based on this signal, the ECM increases the fuel injection volume to improve driveability when the engine speed is low and the fuel temperature is high.


Dtc 39 (5) Fuel Temperature Sensor Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150
DTC No.DTC Detection ConditionTrouble Area
39 (5)Open or short in the fuel temperature sensor circuit for 0.5 sec. or more.
Open or short in fuel temperature sensor circuit
Fuel temperature sensor
ECM

WIRING DIAGRAM

Dtc 39 (5) Fuel Temperature Sensor Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

INSPECTION PROCEDURE

  • УКАЗАНИЕ:
If DTCs related to different systems that have terminal E2 as the ground terminal are stored simultaneously, there may be an open circuit between terminal E2 and body ground.
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

When using intelligent tester:

1.READ VALUE USING INTELLIGENT TESTER (FUEL TEMPERATURE)

Connect the intelligent tester to the DLC3.

Turn the ignition switch to ON.

Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Temp.

Result
ResultProceed to
-40°C (-40°F)A
140°C (284°F) or higherB
Value is same as actual fuel temperatureC
  • УКАЗАНИЕ:
  • When DTC 39 (5) is stored, the type of malfunction can be determined based on the fuel temperature (see below).
  • Result:
  • Temperature DisplayedMalfunction
    -40°C (-40°F)Open circuit
    140°C (284°F) or higherShort circuit
B
Перейдите к шагу 4
C
CHECK FOR INTERMITTENT PROBLEMS
A
2.READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN WIRE HARNESS)
Dtc 39 (5) Fuel Temperature Sensor Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Disconnect the fuel temperature sensor connector.

Connect terminals 1 and 2 of the fuel temperature sensor harness side connector.

Turn the ignition switch to ON.

Read the temperature value on the intelligent tester.

  • OK:
  • 140°C (284°F) or higher
Text in Illustration
*1Fuel Temperature Sensor
*2ECM
*aFront view of wire harness connector
(to fuel temperature sensor)

Reconnect the fuel temperature sensor connector.

NG
Перейдите к шагу 3
OK
REPLACE FUEL TEMPERATURE SENSOR
3.READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN ECM)
Dtc 39 (5) Fuel Temperature Sensor Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Connect terminals THF and E2 of the ECM connector.

Turn the ignition switch to ON.

Read the temperature value on the intelligent tester.

  • OK:
  • 140°C (284°F) or higher
Text in Illustration
*1Fuel Temperature Sensor
*2ECM
*aComponent with harness connected
(ECM)
NG
REPLACE ECM
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR
4.READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN WIRE HARNESS)
Dtc 39 (5) Fuel Temperature Sensor Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Disconnect the fuel temperature sensor connector.

Turn the ignition switch to ON.

Read the temperature value on the intelligent tester.

  • OK:
  • -40°C (-40°F)
Text in Illustration
*1Fuel Temperature Sensor
*2ECM

Reconnect the fuel temperature sensor connector.

NG
Перейдите к шагу 5
OK
REPLACE FUEL TEMPERATURE SENSOR
5.READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN ECM)

Disconnect the ECM connector.

Turn the ignition switch to ON.

Read the temperature value on the intelligent tester.

  • OK:
  • -40°C (-40°F)

Reconnect the ECM connector.

NG
REPLACE ECM
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR

When not using intelligent tester:

1.CHECK ECM (THF VOLTAGE)
Dtc 39 (5) Fuel Temperature Sensor Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionConditionSpecified Condition
    C102-5 (THF) - C102-9 (E2)20°C (68°F)0.2 to 3.8 V
    C102-5 (THF) - C102-9 (E2)80°C (176°F)0.1 to 1.5 V
Text in Illustration
*aComponent with harness connected
(ECM)
NG
Перейдите к шагу 2
OK
CHECK FOR INTERMITTENT PROBLEMS
2.INSPECT FUEL TEMPERATURE SENSOR

Inspect the fuel temperature sensor (See page ).

NG
REPLACE FUEL TEMPERATURE SENSOR
OK
3.CHECK HARNESS AND CONNECTOR (ECM - FUEL TEMPERATURE SENSOR)

Disconnect the fuel temperature sensor connector.

Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance (Check for Open):
  • Tester ConnectionConditionSpecified Condition
    C85-2 - C102-5 (THF)AlwaysBelow 1 Ω
    C85-1 - C102-9 (E2)AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • Tester ConnectionConditionSpecified Condition
    C85-2 or C102-5 (THF) - Body groundAlways10 kΩ or higher

Reconnect the fuel temperature sensor connector.

Reconnect the ECM connector.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM

Dtc 17 (1) Interior Ic Malfunction

Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150 - СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E

DESCRIPTION

INSPECTION PROCEDURE

CHECK DTC OUTPUT (CHECK IF DTC 17 (1) IS OUTPUT AGAIN)

DTC 17 (1) Interior IC Malfunction

DESCRIPTION

DTC No.DTC Detection ConditionTrouble Area
17 (1)ECU malfunction.ECM

INSPECTION PROCEDURE

  • УКАЗАНИЕ:
  • Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
1.CHECK DTC OUTPUT (CHECK IF DTC 17 (1) IS OUTPUT AGAIN)

Connect the intelligent tester to the DLC3.

Clear the DTC (See page ).

Turn the ignition switch off for 30 seconds or more.

Turn the ignition switch to ON and turn the tester on.

Enter the following menus: Powertrain / Engine and ECT / DTC.

Read the DTCs (See page ).

Result
ResultProceed to
DTC 17 (1) output againA
No DTC outputB
B
CHECK FOR INTERMITTENT PROBLEMS
A
REPLACE ECM

Dtc 35 Manifold Absolute Pressure / Barometric Pressure Circuit Malfunction

Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150 - СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

When using intelligent tester:

READ VALUE USING INTELLIGENT TESTER (INTAKE MANIFOLD PRESSURE)

CHECK CONNECTION OF VACUUM HOSE

INSPECT MANIFOLD ABSOLUTE PRESSURE SENSOR

CHECK ECM (VC VOLTAGE)

CHECK ECM (PIM VOLTAGE)

CHECK HARNESS AND CONNECTOR (ECM - MANIFOLD ABSOLUTE PRESSURE SENSOR)

When not using intelligent tester:

INSPECT MANIFOLD ABSOLUTE PRESSURE SENSOR

CHECK ECM (VC VOLTAGE)

CHECK ECM (PIM VOLTAGE)

CHECK HARNESS AND CONNECTOR (ECM - MANIFOLD ABSOLUTE PRESSURE SENSOR)

DTC 35 Manifold Absolute Pressure / Barometric Pressure Circuit Malfunction

DESCRIPTION

The manifold absolute pressure sensor generates voltage according to the pressure value as shown in the illustration. The voltage of the manifold absolute pressure sensor is one of the factors used to determine the injection volume and injection timing.


Dtc 35 Manifold Absolute Pressure / Barometric Pressure Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150
DTC No.DTC Detection ConditionTrouble Area
35 Open or short in the manifold absolute pressure sensor circuit for 2 sec. or more.
Open or short in manifold absolute pressure sensor circuit
Manifold absolute pressure sensor
ECM

WIRING DIAGRAM

Dtc 35 Manifold Absolute Pressure / Barometric Pressure Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

INSPECTION PROCEDURE

  • УКАЗАНИЕ:
If DTCs related to different systems that have terminal E2 as the ground terminal are stored simultaneously, there may be an open circuit between terminal E2 and body ground.
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

When using intelligent tester:

1.READ VALUE USING INTELLIGENT TESTER (INTAKE MANIFOLD PRESSURE)

Connect the intelligent tester to the DLC3.

Turn the ignition switch to ON.

Enter the following menus: Powertrain / Engine and ECT / Data List / PIM.

  • OK:
  • Value is same as atmospheric pressure.
  • УКАЗАНИЕ:
  • When DTC 35 is stored, the type of malfunction can be determined based on the manifold absolute pressure (see below).
Intake Manifold Pressure (kPa)Malfunction
Approx. 0
Short in PIM circuit
192 or more
Open or short in VC circuit
Open in PIM circuit
Open in E2 circuit
NG
Перейдите к шагу 3
OK
2.CHECK CONNECTION OF VACUUM HOSE

Check that the vacuum hose is securely connected and that there are no leaks from the connection.

  • OK:
  • The vacuum hose is securely connected and there are no leaks from the connection.
NG
REPAIR OR REPLACE VACUUM HOSE
OK
CHECK FOR INTERMITTENT PROBLEMS
3.INSPECT MANIFOLD ABSOLUTE PRESSURE SENSOR

Inspect the manifold absolute pressure sensor (See page ).

NG
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR
OK
4.CHECK ECM (VC VOLTAGE)
Dtc 35 Manifold Absolute Pressure / Barometric Pressure Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionSwitch ConditionSpecified Condition
    C102-1 (VC) - C102-9 (E2)Ignition switch ON4.75 to 5.25 V
Text in Illustration
*aComponent with harness connected
(ECM)
NG
REPLACE ECM
OK
5.CHECK ECM (PIM VOLTAGE)
Dtc 35 Manifold Absolute Pressure / Barometric Pressure Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionSwitch ConditionSpecified Condition
    C102-2 (PIM) - C102-9 (E2)Ignition switch ON1.0 to 2.2 V
Text in Illustration
*aComponent with harness connected
(ECM)
OK
REPLACE ECM
NG
6.CHECK HARNESS AND CONNECTOR (ECM - MANIFOLD ABSOLUTE PRESSURE SENSOR)

Disconnect the manifold absolute pressure sensor connector.

Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance (Check for Open):
  • Tester ConnectionConditionSpecified Condition
    C83-3 (VC) - C102-1 (VC)AlwaysBelow 1 Ω
    C83-2 (PIM) - C102-2 (PIM)AlwaysBelow 1 Ω
    C83-1 (E) - C102-9 (E2)AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • Tester ConnectionConditionSpecified Condition
    C83-3 (VC) or C102-1 (VC) - Body groundAlways10 kΩ or higher
    C83-2 (PIM) or C102-2 (PIM) - Body groundAlways10 kΩ or higher
    C83-1 (E) or C102-9 (E2) - Body groundAlways10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK FOR INTERMITTENT PROBLEMS

When not using intelligent tester:

1.INSPECT MANIFOLD ABSOLUTE PRESSURE SENSOR

Inspect the manifold absolute pressure sensor (See page ).

NG
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR
OK
2.CHECK ECM (VC VOLTAGE)
Dtc 35 Manifold Absolute Pressure / Barometric Pressure Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionSwitch ConditionSpecified Condition
    C102-1 (VC) - C102-9 (E2)Ignition switch ON4.75 to 5.25 V
Text in Illustration
*aComponent with harness connected
(ECM)
NG
REPLACE ECM
OK
3.CHECK ECM (PIM VOLTAGE)
Dtc 35 Manifold Absolute Pressure / Barometric Pressure Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionSwitch ConditionSpecified Condition
    C102-2 (PIM) - C102-9 (E2)Ignition switch ON1.0 to 2.2 V
Text in Illustration
*aComponent with harness connected
(ECM)
OK
REPLACE ECM
NG
4.CHECK HARNESS AND CONNECTOR (ECM - MANIFOLD ABSOLUTE PRESSURE SENSOR)

Disconnect the manifold absolute pressure sensor connector.

Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance (Check for Open):
  • Tester ConnectionConditionSpecified Condition
    C83-3 (VC) - C102-1 (VC)AlwaysBelow 1 Ω
    C83-2 (PIM) - C102-2 (PIM)AlwaysBelow 1 Ω
    C83-1 (E) - C102-9 (E2)AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • Tester ConnectionConditionSpecified Condition
    C83-3 (VC) or C102-1 (VC) - Body groundAlways10 kΩ or higher
    C83-2 (PIM) or C102-2 (PIM) - Body groundAlways10 kΩ or higher
    C83-1 (E) or C102-9 (E2) - Body groundAlways10 kΩ or higher

Reconnect the manifold absolute pressure sensor connector.

Reconnect the ECM connector.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK FOR INTERMITTENT PROBLEMS

Dtc 15 (4) Throttle Motor Circuit Malfunction

Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150 - СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT DIESEL THROTTLE BODY (THROTTLE OPEN SWITCH)

CHECK HARNESS AND CONNECTOR (THROTTLE OPEN SWITCH - ECM AND BODY GROUND)

CHECK ECM (THROTTLE CONTROL MOTOR CIRCUIT)

INSPECT DIESEL THROTTLE BODY (THROTTLE CONTROL MOTOR)

CHECK HARNESS AND CONNECTOR (THROTTLE CONTROL MOTOR - ECM)

DTC 15 (4) Throttle Motor Circuit Malfunction

DESCRIPTION

The throttle control motor is operated by the ECM and it opens and closes the throttle valve.


The fully open position of the throttle valve is detected by the throttle open switch mounted on the venturi.


If this DTC is stored, the ECM shuts down the power for the throttle control motor.

DTC No.DTC Detection ConditionTrouble Area
15 (4) Open or short in the throttle control motor circuit.
Open or short in throttle control motor circuit
Throttle control motor
Throttle valve
Open or short in throttle open switch circuit
Throttle open switch
ECM
Open or short in the throttle open switch circuit.

WIRING DIAGRAM

Dtc 15 (4) Throttle Motor Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

INSPECTION PROCEDURE

  • УКАЗАНИЕ:
  • Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
1.INSPECT DIESEL THROTTLE BODY (THROTTLE OPEN SWITCH)

Inspect the throttle open switch (See page ).

NG
REPLACE DIESEL THROTTLE BODY
OK
2.CHECK HARNESS AND CONNECTOR (THROTTLE OPEN SWITCH - ECM AND BODY GROUND)

Disconnect the throttle open switch connector.

Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance (Check for Open):
  • Tester ConnectionConditionSpecified Condition
    C110-1 - Body groundAlwaysBelow 1 Ω
    C102-15 (THOP) - C110-2AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • Tester ConnectionConditionSpecified Condition
    C102-15 (THOP) or C110-2 - Body groundAlways10 kΩ or higher

Reconnect the throttle open switch connector.

Reconnect the ECM connector.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
3.CHECK ECM (THROTTLE CONTROL MOTOR CIRCUIT)
Dtc 15 (4) Throttle Motor Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

During engine racing, check the waveforms according to the value(s) in the table below.

  • OK:
  • Tester ConnectionConditionSpecified Condition
    C101-10 (LU+A) - C101-13 (E01)Engine racingCorrect waveform is as shown
    C101-9 (LU-A) - C101-13 (E01)Engine racingCorrect waveform is as shown
    C101-8 (LU+B) - C101-13 (E01)Engine racingCorrect waveform is as shown
    C101-7 (LU-B) - C101-13 (E01)Engine racingCorrect waveform is as shown
Text in Illustration
*aComponent with harness connected
(ECM)
*bSignal waveforms
NG
Перейдите к шагу 4
OK
REPLACE ECM
4.INSPECT DIESEL THROTTLE BODY (THROTTLE CONTROL MOTOR)

Inspect the throttle control motor (See page ).

NG
REPLACE DIESEL THROTTLE BODY
OK
5.CHECK HARNESS AND CONNECTOR (THROTTLE CONTROL MOTOR - ECM)

Disconnect the throttle control motor connector.

Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance (Check for Open):
  • Tester ConnectionConditionSpecified Condition
    C105-6 - C101-10 (LU+A)AlwaysBelow 1 Ω
    C105-4 - C101-9 (LU-A)AlwaysBelow 1 Ω
    C105-3 - C101-8 (LU+B)AlwaysBelow 1 Ω
    C105-1 - C101-7 (LU-B)AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • Tester ConnectionConditionSpecified Condition
    C105-6 or C101-10 (LU+A) - Body groundAlways10 kΩ or higher
    C105-4 or C101-9 (LU-A) - Body groundAlways10 kΩ or higher
    C105-3 or C101-8 (LU+B) - Body groundAlways10 kΩ or higher
    C105-1 or C101-7 (LU-B) - Body groundAlways10 kΩ or higher

Reconnect the throttle control motor connector.

Reconnect the ECM connector.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK ECM POWER SOURCE CIRCUIT

Dtc 32 (1) Injection Pump System Malfunction

Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150 - СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (ECM - INJECTION PUMP CORRECTION UNIT)

REPLACE INJECTION PUMP ASSEMBLY

CHECK DTC OUTPUT (CHECK IF DTC 32 (1) IS OUTPUT AGAIN)

DTC 32 (1) Injection Pump System Malfunction

DESCRIPTION

To compensate for the change in injection volume and injection timing caused by the variance in the injection pump itself, a correction is made by using the data that is stored in the ROM in the fuel pump correction unit.

DTC No.DTC Detection ConditionTrouble Area
32 (1)
When the ignition switch is turned to ON, or when the ECM determines if there is an error in the RAM of the ECM, the ECM conducts single communication. If one of the following conditions occurs in single communication, the ECM conducts another communication. While the ECM is conducting communication, the ECM stores DTC 32 (1) if (a) occurs 20 times continuously, (b) occurs 20 times continuously, or (c) occurs 2 times continuously.
(a) There was a communication error when receiving data.
(b) Data sent from the injection pump correction unit does not match the data received in the ECM.
(c) Data received from the pump ROM is not input for 1024 msec.
  • УКАЗАНИЕ:
  • Even when determining if the process is completed normally, if an undefined code is found while checking the identification code of data received, the ECM conducts communication again. If an undefined code occurs 20 times continuously, the ECM stores DTC 32 (1).
Open or short in injection pump correction unit circuit
Injection pump correction unit
ECM

WIRING DIAGRAM

Dtc 32 (1) Injection Pump System Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (ECM - INJECTION PUMP CORRECTION UNIT)

Disconnect the injection pump correction unit connector.

Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance (Check for Open):
  • Tester ConnectionConditionSpecified Condition
    C107-1 (DATA) - C102-6 (DATA)AlwaysBelow 1 Ω
    C107-4 (CLK) - C102-14 (CLK)AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • Tester ConnectionConditionSpecified Condition
    C107-1 (DATA) or C102-6 (DATA) - Body groundAlways10 kΩ or higher
    C107-4 (CLK) or C102-14 (CLK) - Body groundAlways10 kΩ or higher

Reconnect the injection pump correction unit connector.

Reconnect the ECM connector.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
2.REPLACE INJECTION PUMP ASSEMBLY

Replace the injection pump assembly (See page ).

NEXT
3.CHECK DTC OUTPUT (CHECK IF DTC 32 (1) IS OUTPUT AGAIN)

Connect the intelligent tester to the DLC3.

Clear the DTC (See page ).

Turn the ignition switch to ON and turn the tester on.

Enter the following menus: Powertrain / Engine and ECT / DTC.

Read the DTCs (See page ).

Result
ResultProceed to
DTC 32 (1) output againA
No DTC outputB
B
SYSTEM OK
A
REPLACE ECM

Dtc 14 (4) Timing Control System Malfunction

Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150 - СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT TIMING CONTROL VALVE

CHECK ECM (TCV VOLTAGE)

CHECK ECM (TCV VOLTAGE, SIGNAL)

CHECK LEVEL WARNING SWITCH

CHECK FOR FUEL LEAK

CHECK TIMING CONTROL VALVE (POWER SOURCE)

CHECK HARNESS AND CONNECTOR (TIMING CONTROL VALVE - NO. 1 INTEGRATION RELAY (EFI))

DTC 14 (4) Timing Control System Malfunction

DESCRIPTION

The ECM controls the injection timing by actuating the timing control valve. The timing control valve is mounted on the injection pump and controls the internal fuel pressure of the pump through duty control.


The ECM detects the injection advance angle based on TDC and NE signals.

DTC No.DTC Detection ConditionTrouble Area
14 (4) During and after warming up the engine, the actual injection timing is different from the target value that the ECM calculated for several seconds.
Open or short in timing control valve circuit
Timing control valve
Fuel filter element assembly (clogging)
Fuel (frozen, air present)
Injection pump assembly (internal pressure and timing control valve)
ECM

WIRING DIAGRAM

Dtc 14 (4) Timing Control System Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

INSPECTION PROCEDURE

1.INSPECT TIMING CONTROL VALVE

Inspect the timing control valve (See page ).

NG
REPLACE TIMING CONTROL VALVE
OK
2.CHECK ECM (TCV VOLTAGE)
Dtc 14 (4) Timing Control System Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Disconnect the ECM connector.

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionSwitch ConditionSpecified Condition
    C101-11 (TCV) - Body groundIgnition switch ON11 to 14 V
Text in Illustration
*aRear view of wire harness connector
(to ECM)

Reconnect the ECM connector.

NG
Перейдите к шагу 6
OK
3.CHECK ECM (TCV VOLTAGE, SIGNAL)
Dtc 14 (4) Timing Control System Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionSwitch ConditionSpecified Condition
    C101-11 (TCV) - C101-14 (E1)Ignition switch ON11 to 14 V

While idling, check the waveform according to the value(s) in the table below.

  • OK:
  • Tester ConnectionConditionSpecified Condition
    C101-11 (TCV) - C101-14 (E1)IdlingCorrect waveform is as shown
Text in Illustration
*aComponent with harness connected
(ECM)
*bTCV Signal Waveform
NG
REPLACE ECM
OK
4.CHECK LEVEL WARNING SWITCH

Check the level warning switch (See page ).

NG
REPLACE LEVEL WARNING SWITCH
OK
5.CHECK FOR FUEL LEAK

Visually check the injection pump, each injector and the fuel line for fuel leaks.

  • OK:
  • No leakage.
NG
REPAIR OR REPLACE PART WITH FUEL LEAKAGE
OK
REPLACE INJECTION PUMP ASSEMBLY
6.CHECK TIMING CONTROL VALVE (POWER SOURCE)
Dtc 14 (4) Timing Control System Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Disconnect the timing control valve connector.

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionSwitch ConditionSpecified Condition
    C108-1 - Body groundIgnition switch ON11 to 14 V
Text in Illustration
*aFront view of wire harness connector
(to Timing control valve)

Reconnect the timing control valve connector.

NG
Перейдите к шагу 7
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (TIMING CONTROL VALVE - ECM)
7.CHECK HARNESS AND CONNECTOR (TIMING CONTROL VALVE - NO. 1 INTEGRATION RELAY (EFI))

Disconnect the timing control valve connector.

Disconnect the No. 1 integration relay (EFI) connector from the engine room junction block.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance (Check for Open):
  • Tester ConnectionConditionSpecified Condition
    C108-1 - 1B-4AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • Tester ConnectionConditionSpecified Condition
    C108-1 or 1B-4 - Body groundAlways10 kΩ or higher

Reconnect the timing control valve connector.

Reconnect the No. 1 integration relay (EFI) connector.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK ECM POWER SOURCE CIRCUIT

Dtc 24 Air Temperature Circuit Malfunction

Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150 - СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

When using intelligent tester:

READ VALUE USING INTELLIGENT TESTER (INTAKE AIR TEMPERATURE)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN WIRE HARNESS)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN ECM)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN WIRE HARNESS)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN ECM)

When not using intelligent tester:

CHECK ECM

INSPECT INTAKE AIR TEMPERATURE SENSOR

CHECK HARNESS AND CONNECTOR (ECM - INTAKE AIR TEMPERATURE SENSOR)

DTC 24 Air Temperature Circuit Malfunction

DESCRIPTION

The intake air temperature sensor senses the intake air temperature. A thermistor built into this sensor changes its resistance according to the intake air temperature as shown in the illustration. The resistance value of the intake air temperature sensor is one of the factors used to determine the fuel injection volume.


Dtc 24 Air Temperature Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150
DTC No.DTC Detection ConditionTrouble Area
24Open or short in the intake air temperature sensor circuit for 0.5 sec. or more.
Open or short in intake air temperature sensor circuit
Intake air temperature sensor
ECM

WIRING DIAGRAM

Dtc 24 Air Temperature Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

INSPECTION PROCEDURE

  • УКАЗАНИЕ:
If DTCs related to different systems that have terminal E2 as the ground terminal are stored simultaneously, there may be an open circuit between terminal E2 and body ground.
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

When using intelligent tester:

1.READ VALUE USING INTELLIGENT TESTER (INTAKE AIR TEMPERATURE)

Connect the intelligent tester to the DLC3.

Turn the ignition switch to ON.

Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air.

Result
ResultProceed to
-40°C (-40°F)A
140°C (284°F) or higherB
Value is same as actual engine coolant temperatureC
  • УКАЗАНИЕ:
  • When DTC 24 is stored, the type of malfunction can be determined based on the intake air temperature (see below).
Temperature DisplayedMalfunction
-40°C (-40°F)Open circuit
140°C (284°F) or higherShort circuit
B
Перейдите к шагу 4
C
CHECK FOR INTERMITTENT PROBLEMS
A
2.READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN WIRE HARNESS)
Dtc 24 Air Temperature Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Disconnect the intake air temperature sensor connector.

Connect terminals 1 and 2 of the intake air temperature sensor harness side connector.

Turn the ignition switch to ON.

Read the temperature value on the intelligent tester.

  • OK:
  • 140°C (284°F) or higher
Text in Illustration
*1Intake Air Temperature Sensor
*2ECM
*aFront view of wire harness connector
(to Intake Air Temperature Sensor)

Reconnect the intake air temperature sensor connector.

NG
Перейдите к шагу 3
OK
REPLACE INTAKE AIR TEMPERATURE SENSOR
3.READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN ECM)
Dtc 24 Air Temperature Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Connect terminals THA and E2 of the ECM connector.

Turn the ignition switch to ON.

Read the temperature value on the intelligent tester.

  • OK:
  • 140°C (284°F) or higher
Text in Illustration
*1Intake Air Temperature Sensor
*2ECM
*aComponent with harness connected
(ECM)
NG
REPLACE ECM
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR
4.READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN WIRE HARNESS)
Dtc 24 Air Temperature Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Disconnect the intake air temperature sensor connector.

Turn the ignition switch to ON.

Read the temperature value on the intelligent tester.

  • OK:
  • -40°C (-40°F)
Text in Illustration
*1Intake Air Temperature Sensor
*2ECM

Reconnect the intake air temperature sensor connector.

NG
Перейдите к шагу 5
OK
REPLACE INTAKE AIR TEMPERATURE SENSOR
5.READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN ECM)
Dtc 24 Air Temperature Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Disconnect the ECM connector.

Turn the ignition switch to ON.

Read the temperature value on the intelligent tester.

  • OK:
  • -40°C (-40°F)
Text in Illustration
*1Intake Air Temperature Sensor
*2ECM
*aRear view of wire harness connector
(to ECM)

Reconnect the ECM connector.

NG
REPLACE ECM
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR

When not using intelligent tester:

1.CHECK ECM
Dtc 24 Air Temperature Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionConditionSpecified Condition
    C102-3 (THA) - C102-9 (E2)20°C (68°F)0.2 to 3.8 V
    C102-3 (THA) - C102-9 (E2)80°C (176°F)0.1 to 1.5 V
Text in Illustration
*aComponent with harness connected
(ECM)
NG
Перейдите к шагу 2
OK
CHECK FOR INTERMITTENT PROBLEMS
2.INSPECT INTAKE AIR TEMPERATURE SENSOR

Inspect the intake air temperature sensor (See page ).

NG
REPLACE INTAKE AIR TEMPERATURE SENSOR
OK
3.CHECK HARNESS AND CONNECTOR (ECM - INTAKE AIR TEMPERATURE SENSOR)

Disconnect the intake air temperature sensor connector.

Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance (Check for Open):
  • Tester ConnectionConditionSpecified Condition
    C104-2 - C102-3 (THA)AlwaysBelow 1 Ω
    C104 - C102-9 (E2)AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • Tester ConnectionConditionSpecified Condition
    C104-2 or C102-3 (THA) - Body groundAlways10 kΩ or higher

Reconnect the intake air temperature sensor connector.

Reconnect the ECM connector.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM

Dtc 13 (2) Engine Speed Sensor Circuit Malfunction

Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150 - СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT ENGINE SPEED SENSOR

CHECK ECM (TDC, NE SIGNAL)

CHECK HARNESS AND CONNECTOR (ECM - ENGINE SPEED SENSOR)

DTC 13 (2) Engine Speed Sensor Circuit Malfunction

DESCRIPTION

The engine speed sensor in the engine control system contains a signal plate and a pickup coil for the NE signal. The NE signal plate has 56 teeth and is mounted in the injection pump. The NE signal sensor generates 56 signals for every 2 engine revolutions. The ECM detects the engine speed and cam lift position of the injection pump. The ECM uses the TDC and NE signals for injection timing control. The NE signal is also used for injection volume control.

DTC No.DTC Detection ConditionTrouble Area
13 (2) No NE signal is sent to the ECM for 0.5 sec. or more at 680 rpm or more.
Open or short in engine speed sensor circuit
Engine speed sensor
ECM
No NE signal is sent to the ECM for 2.0 sec. or more during cranking.

WIRING DIAGRAM

Refer to DTC 12 (See page ).


INSPECTION PROCEDURE

1.INSPECT ENGINE SPEED SENSOR

Inspect the engine speed sensor (See page ).

NG
REPLACE INJECTION PUMP ASSEMBLY
OK
2.CHECK ECM (TDC, NE SIGNAL)
Dtc 13 (2) Engine Speed Sensor Circuit Malfunction. СИСТЕМА УПРАВЛЕНИЯ ДВИГАТЕЛЕМ 5L-E. Land Cruiser Prado GRJ150 TRJ150 TRJ155 KDJ150 TRJ155 LJ150

While cranking or idling, check the waveforms according to the value(s) in the table below.

  • OK:
  • Tester ConnectionConditionSpecified Condition
    C101-17 (TDC+) - C101-16 (TDC-)IdlingCorrect waveform is as shown
    C101-19 (NE+) - C101-18 (NE-)IdlingCorrect waveform is as shown
Text in Illustration
*aComponent with harness connected
(ECM)
*bTDC and NE Signal Waveforms
NG
Перейдите к шагу 3
OK
REPLACE ECM
3.CHECK HARNESS AND CONNECTOR (ECM - ENGINE SPEED SENSOR)

Disconnect the engine speed sensor connector.

Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance (Check for Open):
  • Tester ConnectionConditionSpecified Condition
    C103-2 (NE+) - C101-19 (NE+)AlwaysBelow 1 Ω
    C103-1 (NE-) - C101-18 (NE-)AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • Tester ConnectionConditionSpecified Condition
    C103-2 (NE+) or C101-19 (NE+) - Body groundAlways10 kΩ or higher
    C103-1 (NE-) or C101-18 (NE-) - Body groundAlways10 kΩ or higher

Reconnect the engine speed sensor connector.

Reconnect the ECM connector.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK FOR INTERMITTENT PROBLEMS