Component Inspection
1.

Ignition Switch "OFF"

2.

Disconnect battery (-).

3.

Refer to "Shop Manual" and remove the lambda sensor unit.

4.

Measure resistance between Pin No. 2(Heater Power) and Pin No. 5(Heater Control) of the lambda sensor unit.

Specification : Apporox 2.4 ~4.0Ω (Approx. 20℃)

5.

Is the measured value within specification?

▶ Fault is intermittent caused by poor contact in the sensor’s and/or ECM’s connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of vehicle Repair" procedure.

▶ If no problems were found with the circuits or connectors, Replace the lambda sensor unit and go to "Verification of Vehicle Repair" procedure.

warning
•

When install a part, tighten it within specification.

•

When drop down the part, check part's operating condition whether it is damaged or not.

warning
•

Do not use cleaner, spray and grease may affect a performance of lambda sensor.

•

Sensor wiring can be damaged by exhaust system such an exhaust manifold.

warning
•

After replacing lambda sensor unit, perform "Component Change Routine". Otherwise, problem that performance or emission concerned can be occured from replacing the part.

Component Replacement
1.

Ignition Switch "OFF"

2.

Connect GDS to Data Link Connector(DLC).

3.

Ignition Switch "ON" & Engine "OFF"

4.

Perform "Component Change Routine"of "Vehicle S/W Management" with GDS.

5.

Select "Lambda Sensor Unit(LSU) Replacement".

Fig.1 ) S/W Management List of U2 Engine

Fig.2 ) Component Change Routine

Fig.3 ) Lambda Sensor Unit(LSU) Replacement

Fig.4 ) Complete

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