Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 - Suzuki XL7 2007 Service Manual

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Heated Oxygen Sensor Replacement - Bank
1 Sensor 1
Removal Procedure
CAUTION
!
Do not remove the pigtail from either the
heated oxygen sensor (HO2S) or the oxygen
sensor (O2S). Removing the pigtail or the
connector will affect sensor operation.
Handle the oxygen sensor carefully. Do not
drop the HO2S. Keep the in-line electrical
connector and the louvered end free of
grease, dirt, or other contaminants. Do not
use cleaning solvents of any type.
Do not repair the wiring, connector or
terminals. Replace the oxygen sensor if the
pigtail wiring, connector, or terminal is
damaged.
This external clean air reference is obtained
by way of the oxygen sensor signal and
heater wires. Any attempt to repair the wires,
connectors, or terminals could result in the
obstruction of the air reference and degraded
sensor performance.
The following guidelines should be used
when servicing the heated oxygen sensor:
• Do not apply contact cleaner or other
materials to the sensor or vehicle harness
connectors. These materials may get into
the sensor causing poor performance.
• Do not damage the sensor pigtail and
harness wires in such a way that the wires
inside are exposed. This could provide a
path for foreign materials to enter the
sensor and cause performance problems.
• Ensure the sensor or vehicle lead wires are
not bent sharply or kinked. Sharp bends or
kinks could block the reference air path
through the lead wire.
• Do not remove or defeat the oxygen
sensor ground wire, where applicable.
Vehicles that utilize the ground wired
sensor may rely on this ground as the only
ground contact to the sensor. Removal of
the ground wire will cause poor engine
performance.
• Ensure that the peripheral seal remains
intact on the vehicle harness connector in
order to prevent damage due to water
intrusion. The engine harness may be
repaired using Packard's Crimp and Splice
Seals Terminal Repair Kit. Under no
circumstances should repairs be soldered
since this could result in the air reference
being obstructed.
Engine Electrical Devices:
1. Remove the fuel injector sight shield, if necessary.
Refer to"Fuel Injector Sight Shield Replacement: ".
2. Disconnect the engine wiring harness electrical
connector (3) from the heated oxygen sensor
(HO2S) electrical connector (2).
3. Remove the HO2S electrical connector retainer from
the camshaft cover.
4. Remove the HO2S (1) from the exhaust manifold.
1C-11

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