nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Diagnostic Trouble Code Tests and Associated Procedures|Page 4117 > < Diagnostic Trouble Code Tests and Associated Procedures|Page 4115
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3. Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.

COMPONENT INSPECTION  

Check resistance between terminals (3) and (1).

Resistance: 2.3 - 4.3 ohms at 25°C (77°F)

Check continuity between terminals (2) and (1), (3) and (2).

Continuity should not exist.

If NG, replace the front heated oxygen sensor.

CAUTION:  Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a
concrete floor; use a new one.

DTC 1002 Rear Heated Oxygen Sensor Heater (LB)

System Description

SYSTEM DESCRIPTION

The ECM performs ON/OFF control of the rear heated oxygen sensor heaters corresponding to the engine speed.

Operation

OPERATION

Diagnostic Trouble Code Tests and Associated Procedures|Page 4117 > < Diagnostic Trouble Code Tests and Associated Procedures|Page 4115