Mazda CX-5 Service & Repair Manual: Heated Oxygen Sensor (HO2 S) Removal/Installation
WARNING:
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A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.
CAUTION:
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Do not allow flammable objects such as the taping for bundling wiring harness to come into contact with the exhaust manifold and silencer.
NOTE:
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If penetrant lubricating spray penetrates the airflow hole of the HO2S, it could cause interference with the HO2S function.
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When removing the HO2S, wrap a rag around the lower position so that penetrant lubricating spray does not get sprayed into the airflow hole.
1. Disconnect the negative battery cable..
2. Lift up the vehicle.
3. Remove the floor under cover. (vehicles with floor under cover).
4. Remove the insulator and brace bar. (2WD).
5. Disconnect the HO2S connector.
6. Remove the clip A from the bracket.
7. Remove the clip B.
8. Remove the HO2S using the SST
.
9. Install in the reverse order of removal.
Heated Oxygen Sensor (HO2 S) Inspection
HO2S Inspection
1. Connect the M-MDS to the DLC?2.
2. Switch the ignition ON (engine on).
3. Warm up the engine to normal operating temperature.
4. Access the following PIDs using the M-MDS..
...
Heated Oxygen Sensor (HO2 S)
Purpose/Function
Detects the oxygen concentration (theoretical air/fuel ratio) in the exhaust
gas as basic information for mainly determining the fuel injection amount and
as information ...
Other materials:
High Pressure Fuel Pump
Purpose, Function
Applies pressure to fuel sent from the fuel pump equipped on the fuel tank,
and then pumps it to the fuel delivery pipe.
Fuel is sectioned and pumped by the up and down movement of the piston caused
by the rotation of the cam installed to the rear end of the ex ...
Antenna Feeder No.2 Inspection
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. A-pillar trim (RH).
b. Trunk board.
c. Trunk end trim (RH).
d. Rear scuff plate (RH).
e. Trunk side trim (RH).
3. Disconnect antenna feeder No.1.
4. Disconnect antenna feeder No.3.
5. Verify that t ...
Operating Tips for Audio System
WARNING
Always adjust the audio while the vehicle is stopped:
Do not adjust the audio control switches while driving the vehicle.
Adjusting the audio while driving the vehicle is dangerous as it could distract
your attention from the vehicle operation which could lead to a serious accident.
Ev ...
