Engine Electrical Devices: 1C-2
HO2S Output Waveform Check
1) Check that HO2S signal is output properly.
• Petrol model: Reference “Inspection of ECM and
Its Circuit: Petrol Model” in Section 1A in related
manual mentioned in the Foreword of this manual.
• Bi-Fuel LPG model:
If faulty condition is found, check the following.
• Wire harness and connections
• Exhaust system leakage
If check results are satisfactory, replace HO2S.
)
HO2S Heater and Its Circuit Check
1) Turn ignition switch to OFF position and disconnect
HO2S connector.
2) Check that terminal voltage of HO2S connector
(vehicle side) (1) between terminals “4” and “3” is
battery voltage when ignition switch is in ON
position.
If faulty condition is found, check power supply
circuit, ground circuit for connections.
3) Using ohmmeter, measure resistance of HO2S
heater between terminals “3” and “4” at sensor
connector.
If faulty condition is found, replace HO2S.
)
NOTE
Sensor temperature of sensor affects
resistance value largely. Make sure that
sensor heater is at specified temperature.
HO2S heater resistance
5.0 – 6.4
Ω
at 20 °C (68 °F)
CMP Sensor On-Vehicle Inspection
AENAR90A1306012
1) Disconnect connector of CMP sensor with ignition
switch turned OFF.
2) Turn ignition switch to ON position and check that
voltage of CMP sensor connector (vehicle side)
between terminals “1” and “2” is battery voltage.
If faulty condition is found, check power supply
circuit, ground circuit and connections.
3) Check that CMP sensor signal is output properly.
• Petrol model: Reference “Inspection of ECM and
Its Circuit: Petrol Model” in Section 1A in related
manual mentioned in the Foreword of this manual.
• Bi-Fuel LPG model:
If faulty condition is found, check the following.
• Wire harness and connections
• CMP sensor:
)
CKP Sensor On-Vehicle Inspection
AENAR90A1306015
1) Disconnect connector of CKP sensor with ignition
switch turned OFF.
1. HO2S sensor side connector (viewed from terminal side)
1
2
3
4
1
2
I9C50A130012-01
1
2
3
4
1
I9C50A130009-01
1. HO2S sensor side connector (viewed from terminal side)
1
2
3
4
1
I9C50A130010-01
2
1
I7V20A131026-01
Summary of Contents for Wagon R
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Page 32: ...0B 5 Maintenance and Lubrication ...
Page 184: ...1J 3 Charging System ...