Dtc P0031 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1). Corolla Auris

Двигатель. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150
Система Управления Двигателем 2Zr-Fe. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE)

CHECK TERMINAL VOLTAGE (POWER SOURCE)

CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)

INSPECT FUSE (EFI NO. 2 FUSE)

DTC P0031 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

DTC P0032 Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1)


DESCRIPTION

Refer to DTC P2195 (See page Нажмите здесь).
УКАЗАНИЕ:
  1. Although the DTC titles say the oxygen sensor, these DTCs relate to the air fuel ratio sensor.
  2. Sensor 1 refers to the sensor mounted in front of the three way catalytic converter and located near the engine assembly.
  3. When either of these DTCs is set, the ECM enters fail-safe mode. The ECM turns off the A/F sensor heater in fail-safe mode. Fail-safe mode continues until the ignition switch is turned off.

  4. The ECM provides a pulse width modulated signal to the control circuit to adjust the current through the heater. The air fuel ratio sensor heater circuit uses a relay on the +B side of the circuit.


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Zr-Fe.Система Sfi. Dtc P0031 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)


DTC No.
DTC Detection Condition
Trouble Area
P0031
Air fuel ratio sensor heater current less than 0.8 A
(1 trip detection logic)
  1. Open in air fuel ratio sensor heater circuit
  2. Air fuel ratio sensor heater (sensor 1)
  3. Integration relay (EFI MAIN relay)
  4. ECM
P0032
Air-Fuel Ratio (A/F) sensor heater current more than 10 A
(1 trip detection logic)
  1. Short in air fuel ratio sensor heater circuit
  2. Air fuel ratio sensor heater (sensor 1)
  3. Integration relay (EFI MAIN relay)
  4. ECM

WIRING DIAGRAM

Refer to DTC P2195 (See page Нажмите здесь).

INSPECTION PROCEDURE

УКАЗАНИЕ:
Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, 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.
1.INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Zr-Fe.Система Sfi. Dtc P0031 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

  1. Disconnect the air fuel ratio sensor connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    B89-1 (HA1A) - B89-2 (+B)
    		20°C (68°F)
    		1.8 to 3.4 Ω
    B89-1 (HA1A) - B89-4 (A1A-)
    		20°C (68°F)
    		10 kΩ or higher

  1. Reconnect the air fuel ratio sensor connector.



NG
REPLACE AIR FUEL RATIO SENSOR (Нажмите здесь)
OK


2.CHECK TERMINAL VOLTAGE (POWER SOURCE)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Zr-Fe.Система Sfi. Dtc P0031 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

  1. Disconnect the air fuel ratio sensor connector.

  1. Turn the ignition switch on (IG).

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

    Standard voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    B89-2 (+B) - Body ground
    		Ignition switch on (IG)
    		9 to 14 V

  1. Reconnect the air fuel ratio sensor connector.



NG
Перейдите к шагу 4
OK


3.CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Zr-Fe.Система Sfi. Dtc P0031 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

  1. Disconnect the air fuel ratio sensor connector.

  1. Disconnect the ECM connector.

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

    Standard resistance (Check for open):
    Tester Connection
    		Condition
    		Specified Condition
    B89-1 (HA1A) - B31-109 (HA1A)
    		Always
    		Below 1 Ω
    Standard resistance (Check for short):
    Tester Connection
    		Condition
    		Specified Condition
    B89-1 (HA1A) or B31-109 (HA1A) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the air fuel ratio sensor connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (AIR FUEL RATIO SENSOR - ECM)
OK

REPLACE ECM (Нажмите здесь)

4.INSPECT FUSE (EFI NO. 2 FUSE)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Zr-Fe.Система Sfi. Dtc P0031 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

  1. Remove the EFI No. 2 fuse from the engine room relay block.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    EFI No. 2
    		Always
    		Below 1 Ω

  1. Reinstall the EFI No. 2 fuse.



NG
REPLACE FUSE (EFI NO. 2 FUSE)
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (AIR FUEL RATIO SENSOR - INTEGRATION RELAY (EFI MAIN RELAY))