Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual page 677

6E1-46 ENGINE AND EMISSION CONTROL SYSTEM (G16/J20 ENGINES)
REMOVAL
WARNING:
To avoid danger of being burned, do not touch exhaust
system when system is hot. Oxygen sensor removal
should be performed when system is cool.
1) Disconnect negative cable from battery.
2) Remove connector from bracket (3) and disconnect coupler
of oxygen sensor.
3) Remove exhaust manifold upper cover (2) if necessary.
4) Hoist vehicle when removing sensor-2 (6).
5) Remove oxygen sensor from exhaust manifold or exhaust
No.1 pipe (7).
CAUTION:
Be careful not to expose it to excessive shock.
It may cause damage to sensor inside.
INSTALLATION
Reverse removal procedure noting the following.
• Tighten oxygen sensor to specified torque.
Tightening torque
Heated oxygen sensor
(a) : 45 N·m (4.5 kg-m, 32.5 lb-ft)
• Connect coupler of oxygen sensor and fit connector to
bracket.
• After installing oxygen sensor, start engine and check that no
exhaust gas leakage exists.
[A] : Sensor-1
[B] : Sensor-2
1. HO2S-1
4. Connector lock for clamp
5. Remove while releasing lock