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:
Cabin Side Frame Straight Line Dimensions [Dimensions]
Point symbol
Designation
Hole diameter or bolt or nut size mm {in}
A
Front side frame outer datum hole
?12 {0.47}
B
Front fender panel installation hole
?10 {0.39}
...
Rear Side Frame Removal [Panel Replacement]
Symbol Mark
Removal Procedure
NOTE:
When drilling the 35 locations indicated by (A) and 4 locations indicated
by (C) shown in the figure, do not drill a hole all the way through or there
could be a problem when installing the new part.
1. Drill the 35 locations indicated by ...
Steering Switch Removal/Installation
WARNING:
Handling the driver-side air bag module improperly can accidentally operate
(deploy) the air bag module, which may seriously injure you. Read the service
warnings and cautions before handling the air bag module..
1. Switch the ignition OFF (LOCK).
2. Disconnect the neg ...