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
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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:
Front Body Control Module (Fbcm) Configuration (Using As Built Data)
NOTE:
If the configuration is performed using As-Built data, the set value of the
personalization function is reset to the initial value (condition when shipped
from factory). Verify the set value with the customer and perform the personalization
function setting after performing th ...
Bsm Indicator Light Flashes While Not Under Bsm Indicator Light Flashing Conditions
(No Combination Switch Operation (Turn Signal Switch)) [Blind Spot Monitoring (Bsm)]
Description
BSM indicator light flashes while not under BSM indicator light-flashing
conditions (no combination switch operation (turn signal switch)
The BSM indicator light flashes despite not satisfying the BSM indicator
light flashing ...
Rear Body Control Module (Rbcm) Configuration (Using Read/Write Function)
NOTE:
When performing configuration, it is necessary to read the vehicle specification
information from the rear body control module (RBCM) before replacing it. Connect
the M-MDS to the vehicle and perform vehicle identification before removing
the rear body control module (RBCM). T ...
