Mazda CX-5 Service & Repair Manual: Heated Oxygen Sensor (HO2 S) Heater Control [Skyactiv G 2.0]
Outline
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Based on the control of the HO2S heater, a stabilized oxygen concentration is detected even at low exhaust temperatures, and feedback control of fuel injection even at cold engine start is made possible for improved cold temperature exhaust emission performance.
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Both emission performance and sensor protection have been improved by duty control of the heater according to engine operation conditions (exhaust gas temperature)
Block Diagram
Operation
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The PCM operates the HO2S heater based on the following control conditions.
|
Output duty ratio |
Control condition |
|
0% |
|
|
30% |
|
|
0?100% (Determined by engine speed and charging efficiency) |
|
Front Heat Duct Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Dashboard under cover.
b. Side wall.
c. Glove compartment.
3. Detach the tab and remove the front heat duct.
LH ...
Heater Core
Purpose
The heater core heats passing air.
Function
A portion of the engine coolant is taken into the heater core to heat the
air passing through the heater core.
Co ...
Other materials:
Room Straight Line Dimensions (3) [Dimensions]
Point symbol
Designation
Hole diameter or bolt or nut size mm {in}
A
Rear seat installation hole
?14 {0.55}
B
D-pillar trim installation hole
?8.6 {0.34}
...
Moonroof
The moonroof can be opened or closed electrically only when the ignition is switched
ON.
WARNING
Do not let passengers stand up or extend part of the body through the open moonroof
while the vehicle is moving:
Extending the head, arms, or other parts of the body through the moonroof is
da ...
Body And Accessories SST
49 L067 001
Reflector
49 L067 002
Tripod
49 L067 003
Plum-bob
49 L067 006
Plum-bob
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