Mazda CX-5 Service & Repair Manual: 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 for determining the deterioration of catalytic converter.
-
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
-
Installed to the exhaust manifold.
-
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:
Mass Air Flow (MAF) Sensor
Purpose/Function
Detects the intake airflow amount introduced into the cylinder as basic information
for mainly determining the fuel injection amount.
Detects the intake airflow amount introduced into the cylinder and inputs
it to the PCM as an intake airflow amount signal.
...
Speaker Grille Removal/Installation
Center Speaker Grille
1. Insert a tape-wrapped flathead screwdriver into shown in the figure and remove
hooks A in the direction of arrow (1).
2. Take the shaded area shown in the figure, and remove the center speaker grille
in the direction of arrow (2) while detaching hooks B.
3. ...
Hood Latch And Release Lever Removal/Installation
Hood Latch
1. Open the hood.
2. Disconnect the negative battery cable..
3. Remove the front bumper..
4. Insert a tape-wrapped flathead screwdriver into the position shown in the
figure.
5. Move the tape-wrapped flathead screwdriver in the direction of arrow (1) shown
in the figure t ...
