Suzuki Wagon R Plus RB310, Service Manual

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ENGINE AND EMISSION CONTROL SYSTEM (M13 ENGINE) 6E2-33
Heated oxygen sensor (HO2S-1 and HO2S-2) removal
and installation
Removal
1) Disconnect negative cable at battery.
2) For HO2S–1, disconnect connector of heated oxygen sensor
and release its wire harness from clamps.
3) Remove front bumper and engine front cover.
4) For HO2S–2, disconnect connector of heated oxygen sensor
and release its wire harness from clamp and hoist vehicle.
5) Remove heated oxygen sensor (1) from exhaust pipe.
Installation
Reverse removal procedure noting the following.
• Tighten heated oxygen sensor (1) to specified torque.
Tightening torque
Heated oxygen sensor (a): 45 N·m (4.5 kg-m, 32.5 lb-ft)
• Connect connector of heated oxygen sensor (1) and clamp
wire harness securely.
• After installing heated oxygen sensor (1), start engine and
check that no exhaust gas leakage exists.
Camshaft position sensor (CMP sensor) and its cir-
cuit inspection
1) Confirm that terminal voltages and ground circuit continuity
at CMP sensor connector terminals are in good condition
referring to Step 3 and 5 of “DTC P0340 Diag. Flow” in Sec-
tion 6-2.
If not, repair CMP sensor circuit.
2) Check that CMP sensor signal voltage varies from low to
high or from high to low as specified referring to Step 7 of
“DTC P0340 Diag. Flow” in Section 6-2.
If signal voltage varies as specified, CMP sensor is in good
condition.
If not, replace CMP sensor.
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.
[A]: HO2S–1
[B]: HO2S–2
[A]
[B]
1, (a)
1, (a)