Mazda CX-5 Service & Repair Manual: Heated Oxygen Sensor (HO2 S)
Purpose/Function
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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 for determining the deterioration of catalytic converter.
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Detects the oxygen concentration (theoretical air/fuel ratio) in the exhaust gas and inputs it to the PCM as an oxygen concentration (theoretical air/fuel ratio) signal.
Construction
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Installed to the exhaust manifold.
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A zirconia element has been adopted as the detecting element for detecting the oxygen concentration (theoretical air/fuel ratio).
Operation
-
Inputs the signal, which fluctuates according to the oxygen concentration (theoretical air/fuel ratio), to the PCM.
HO2S characteristic
Fail-safe
|
DTC No. |
Fail-safe function |
|
P0037:00 |
|
|
P0038:00 |
|
Heated Oxygen Sensor (HO2 S) Removal/Installation
WARNING:
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:
Do not allow fla ...
Intake Air Temperature (Iat) Sensor Inspection
IAT Sensor No.1
Resistance inspection
NOTE:
Because the IAT sensor No.1 is integrated in the MAF sensor, replacing the
IAT sensor No.1 includes replacement of the MAF sensor/IAT sensor No ...
Other materials:
Pre Tensioner Seat Belt [Two Step Deployment Control System]
Purpose
The pre-tensioner seat belt retracts and tightens the seat belt webbing to
protect the front passengers during a collision.
Function
The pre-tensioner seat belts operate (deploy) based on the operation signal
from the SAS control module to instantly retract and tigh ...
Floor Under Cover Removal/Installation
1. Lift up the vehicle.
2. Remove bolts A.
3. Remove fasteners B.
4. Remove the floor under cover No.1.
5. Remove nuts C.
6. Remove fasteners D.
7. Remove bolts E.
8. Remove the floor under cover No.2.
9. Remove bolts F.
10. Remove the fastener G.
11. Remove the floor ...
Washer Tank Removal/Installation
With Washer Fluid-level Sensor
1. Disconnect the negative battery cable..
2. Set the front over fender aside..
3. Set the mudguard (RH) aside..
4. Remove the front bumper..
5. Remove the bracket.
6. Disconnect the washer motor connector.
7. Disconnect the washer fluid-level sensor c ...