Toyota Land Cruiser

 Service Manual

SFI
Heated oxygen sensor

COMPONENTS

INSPECTION

1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS

(a) Disconnect the oxygen sensor connector.

(b) Using an ohmmeter, measure the resistance between terminal +B and HT.

Resistance: 11 - 16 W at 20C (68F)

If the resistance is not as specified, replace the sensor.

Torque: 44 N·m (450 kgf·cm, 32 ft·lbf) for sensor 1 20 N·m (200 kgf·cm, 14 ft·lbf) for sensor 2

(c) Reconnect the oxygen sensor connector.

2. INSPECT OPERATION OF HEATED OXYGEN SENSORS (See pages DI-106 and DI-138 )

Accelerator pedal position sensor

Circuit opening relay

Engine control module (ECM)

Engine coolant temperature (ECT) sensor

EFI main relay

Fuel cut RPM

Fuel pressure regulator

Fuel pump relay

Fuel pump resistor

Fuel tank and line

Fuel pump

Heated oxygen sensor

Injector

Knock sensor

Mass air flow (MAF) meter

SFI system

Throttle body

VSV for canister closed valve (CCV)

VSV for vapor pressure sensor

Vapor pressure sensor

Airbag sensor assembly

Curtain shield airbag assembly

Curtain shield airbag sensor assembly

Front airbag sensor

Front passenger airbag assembly

RSCA off switch

Side airbag assembly

Side and curtain shield airbag sensor assembly

Seat position sensor assembly

Side and curtain shield airbag sensor assembly

Seat position sensor assembly

SRS airbag

Steering wheel pad and spiral cable

Wire harness and connector