Suzuki Liana RH413 Service Manual page 202

1C-5 Engine Electrical Devices:
Engine Coolant Temperature (ECT) Sensor
Inspection
Immerse temperature sensing part of ECT sensor in
water (or ice) and measure resistance between sensor
terminals while heating water gradually.
If measured resistance doesn't show such characteristic
as shown, replace ECT sensor.
Heated Oxygen Sensor (HO2S-1 and HO2S-2)
Removal and Installation
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) For HO2S-1, disconnect connector of heated oxygen
sensor and release its wire harness from clamp.
3) For HO2S-2.
a) Remove parking lever garnish and center
console box (2).
b) Remove left front seat assembly and turn over
floor carpet.
c) Disconnect connector (3) of heated oxygen
sensor and hoist vehicle.
4) Remove heated oxygen sensor (1) from exhaust
manifold or exhaust pipe.
Installation
Reverse removal procedure noting the following.
S3RH0A1306013
• Tighten heated oxygen sensor (1) to specified torque.
Tightening torque
Heated oxygen sensor (a): 45 N·m (4.5 kgf-m,
32.5 lb-ft)
• Connect connector of heated oxygen sensor and
clamp wire harness securely.
• Fit HO2S-2 harness grommet to vehicle floor securely.
• After installing heated oxygen sensor, start engine
and check that no exhaust gas leakage exists.
[A]
I3RH0A130001-01
[B]
S3RH0A1306015
1, (a)
2
3
1, (a)
[A]: HO2S-1
[B]: HO2S-2
I3RH0A130002-02