Suzuki Burgman 400 - Service manual > Heated Oxygen Sensor (HO2S) Removal and Installation

Removal

! WARNING Do not remove the HO2 sensor while it is hot.

! CAUTION

• Be careful not to expose the HO2 sensor to excessive shock.
• Do not use an impact wrench when removing or installing the HO2 sensor.
• Be careful not to twist or damage the sensor lead wires.

1) Disconnect the HO2 sensor coupler (1) and remove the clamp (2).

2) Remove the HO2 sensor (3).

Installation

! CAUTION Do not apply oil or other materials to the sensor air holes.

Install the HO2 sensor in the reverse order of removal.

Pay attention to the following point:

• Tighten the HO2 sensor to the specified torque.

Tightening torque
  HO2 sensor: 48 N*m (4.8 kgf-m, 34.5 lb-ft)

Heated Oxygen Sensor (HO2S) Inspection

Inspect the HO2 sensor in the following procedures:

1) Inspect the HO2 sensor and its circuit referring to flow table of the malfunction code (C44). Refer to "DTC "C44" (P0130, P0135): HO2 Sensor (HO2S) Circuit Malfunction".

2) Disconnect the HO2 sensor coupler (1).

NOTE

• Temperature of the sensor affects resistance value largely.
• Make sure that the sensor heater is at correct temperature.

3) Check the resistance between the terminals (W - W) of the HO2 sensor. If the resistance is not within the standard range, replace the HO2 sensor with a new one.

Resistance
Approx. 11.5 - 14.5 Ω (at 23 ºC)

Special tool (A): 09900-25008 (Multi-circuit tester set)

Tester knob indication
Resistance (Ω)

4) Connect the HO2 sensor coupler securely.

! CAUTION Do not apply oil or other materials to the sensor air hole.

PCV Hose Inspection

Inspect the PCV hose (1) for wear and damage.

If it is worn or damaged, replace the PCV hose with a new one.

Check that the PCV hose (1) is securely connected.

PCV Hose Removal and Installation

Removal

1) Remove the PCV hose (1).

Installation

Install the PCV hose in the reverse order of removal.

Specifications

Service Data

FI Sensors

Electrical

Unit: mm (in)

Tightening Torque Specifications

Reference: For the tightening torque of fastener not specified in this section, refer to "Tightening Torque Specifications".

Special Tools and Equipment

Special Tool

09900-25008 Multi-circuit tester set

See also: