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..
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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:
Brake System/ABS Warning Light
Purpose/Function
The brake system/ABS warning light is built into the instrument cluster.
If a malfunction is detected in the system with the parking brake released,
the warning light illuminates to notify the driver.
Construction/Operation
When the DSC system and CAN l ...
Dynamic Stability Control (DSC)
Outline
Electrical brake assist control has been adopted, improving safety.
The DSC HU/CM, integrating both the hydraulic unit (HU) and control module
(CM), has been adopted, resulting in a size and weight reduction.
An enhanced malfunction diagnosis system, used with the M ...
Rear Mount Camera Inspection
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Liftgate upper trim.
b. Liftgate side trim.
c. Liftgate lower trim.
d. Liftgate garnish.
e. Rear mount camera.
3. Prepare four dry cell batteries (1.5 V)
4. Connect the four dry cell batteries in a series.
...