Isuzu Trooper 1999 Workshop Manual page 1269

6E–468
TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
f Bank 2 sensor 2 (automatic transmission) is
mounted behind the left-hand catalytic converter.
3. Disconnect the pigtail from the wiring harness.
IMPORTANT: The pigtail is permanently attached to
the sensor. Be careful not to pull the wires out.
NOTE: Do not use a torch to remove an HO2S unless the
sensor is being replaced. Using a torch could damage the
sensor.
4. Remove the sensor from the exhaust pipe.
f Because of the expansion and contraction of the
metal in the exhaust system over time, this may be
difficult if the engine temperature is below 48°C
(120°F).
TS22915
Inspection Procedure
All four sensors are identical. Inspect each in the same
way.
1. Inspect the pigtail and the electrical connector for
grease, dirt, corrosion, and bare wires or worn
insulation.
2. Inspect the louvered end of the sensor for grease,
dirt, or other contaminations.
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