Dtc P0095 Intake Air Temperature Sensor 2 Circuit

Двигатель. Toyota Rav4. Aca30, 33, 38 Ala30
Система Управления Двигателем 2Ad-Ftv. Toyota Rav4. Aca30, 33, 38 Ala30

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE OF DIESEL TURBO INLET AIR TEMPERATURE SENSOR

CHECK WIRE HARNESS (CHECK FOR OPEN IN WIRE HARNESS)

CHECK WIRE HARNESS (DIESEL TURBO INLET AIR TEMPERATURE SENSOR - ECM)

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

CHECK WIRE HARNESS (DIESEL TURBO INLET AIR TEMPERATURE SENSOR - ECM)

DTC P0095 Intake Air Temperature Sensor 2 Circuit

DTC P0097 Intake Air Temperature Sensor 2 Circuit Low

DTC P0098 Intake Air Temperature Sensor 2 Circuit High


DESCRIPTION

The diesel turbo Intake Air Temperature (IAT) sensor is built into the charge air cooler and senses the IAT. A built-in thermistor in the sensor changes its resistance value according to the intake air temperature. The lower the intake air temperature, the greater the thermistor resistance value. The higher the intake air temperature, the lower the thermistor resistance value (see Fig. 1).
The sensor is connected to the ECM. The 5 V power source voltage in the ECM is applied to the sensor from terminal THIA via resistor R. Resistor R and the sensor are connected in series. When the resistance value of the sensor changes in accordance with changes in the IAT, the potential at terminal THIA also changes. Based on this signal, the ECM corrects the fuel injection volume to improve driveability with a cold engine.
Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Ftv.Система Ecd. Dtc P0095 Intake Air Temperature Sensor 2 Circuit

DTC No.
DTC Detection Condition
Trouble Area
P0095
Open or short in diesel turbo IAT sensor circuit for 0.5 seconds
(1 trip detection logic)
  1. Open or short in diesel turbo IAT sensor circuit
  2. Diesel turbo IAT sensor
  3. ECM
P0097
Short in diesel turbo IAT sensor circuit for 0.5 seconds
(sensor resistance value less than 25 Ω [sensor output voltage less than 0.05 V])
(1 trip detection logic)
  1. Open or short in IAT sensor circuit
  2. Diesel turbo IAT sensor
  3. ECM
P0098
Open in diesel turbo IAT sensor circuit for 0.5 seconds
(sensor resistance value more than 156 kΩ [sensor output voltage more than 4.9 V])
(1 trip detection logic)
  1. Open or short in IAT sensor circuit
  2. Diesel turbo IAT sensor
  3. ECM

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Ftv.Система Ecd. Dtc P0095 Intake Air Temperature Sensor 2 Circuit


INSPECTION PROCEDURE

ПРИМЕЧАНИЕ:
After replacing the ECM, the new ECM needs registration (see page RAV4_ACA30 RM000000TJ400AX.html) and initialization (see page RAV4_ACA30 RM000000TIN009X.html).
УКАЗАНИЕ:
If DTCs relating to different systems are output, and they share terminal E2 as their ground, check this ground circuit first.
1.READ VALUE OF DIESEL TURBO INLET AIR TEMPERATURE SENSOR

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester ON.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air Temp (Turbo).

  1. Read the value.

    Standard value:
    Same value as the actual intake air temperature.
    Result:
    Temperature Displayed
    		Proceed to
    -40°C (-40°F)
    		A
    140°C (284°F) or more
    		B
    OK (same as air temperature near to intake manifold)
    		C
    УКАЗАНИЕ:
    1. If there is an open circuit, the tester indicates -40°C (-40°F).
    2. If there is a short circuit, the tester indicates 140°C (284°F) or more.


B
Перейдите к шагу 4

C
CHECK FOR INTERMITTENT PROBLEMS
A


2.CHECK WIRE HARNESS (CHECK FOR OPEN IN WIRE HARNESS)


    Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Ftv.Система Ecd. Dtc P0095 Intake Air Temperature Sensor 2 Circuit

  1. Disconnect the A49 diesel turbo IAT sensor connector.

  1. Connect terminals 1 and 2 of the diesel turbo IAT sensor wire harness side connector.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester ON.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air Temp (Turbo).

  1. Read the value.

    Standard value:
    140°C (284°F) or more.

  1. Reconnect the diesel turbo IAT sensor connector.



OK
CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE DIESEL TURBO INTAKE AIR TEMPERATURE SENSOR
NG


3.CHECK WIRE HARNESS (DIESEL TURBO INLET AIR TEMPERATURE SENSOR - ECM)


    Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Ftv.Система Ecd. Dtc P0095 Intake Air Temperature Sensor 2 Circuit

  1. Disconnect the A49 diesel turbo IAT sensor connector.

  1. Disconnect the B32 ECM connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    A49-2 - B32-113 (THIA)
    		Below 1 Ω
    A49-1 - B32-90 (ETHI)
    		Below 1 Ω

  1. Reconnect the diesel turbo IAT sensor.

  1. Reconnect the ECM connector.



OK
REPAIR OR REPLACE HARNESS AND CONNECTOR
NG

CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM.

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


    Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Ftv.Система Ecd. Dtc P0095 Intake Air Temperature Sensor 2 Circuit

  1. Disconnect the A49 diesel turbo IAT sensor connector.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester ON.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air Temp (Turbo).

  1. Read the value.

    Standard value:
    -40°C (-40°F) or more.

  1. Reconnect the diesel turbo IAT sensor connector.



OK
REPLACE DIESEL TURBO INTAKE AIR TEMPERATURE SENSOR
NG


5.CHECK WIRE HARNESS (DIESEL TURBO INLET AIR TEMPERATURE SENSOR - ECM)


    Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Ftv.Система Ecd. Dtc P0095 Intake Air Temperature Sensor 2 Circuit

  1. Disconnect the A49 diesel turbo IAT sensor connector.

  1. Disconnect the B32 ECM connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    A49-2 or B32-113 (THIA) - Body ground
    		10 KΩ or higher

  1. Reconnect the diesel turbo IAT sensor connector.

  1. Reconnect the ECM connector.



OK
REPAIR OR REPLACE HARNESS AND CONNECTOR
NG

REPLACE ECM