Mazda CX-5 Service & Repair Manual: Heated Oxygen Sensor (HO2 S) Inspection
HO2S Inspection
1. Connect the M-MDS to the DLC?2.
2. Switch the ignition ON (engine on).
3. Warm up the engine to normal operating temperature.
4. Access the following PIDs using the M-MDS..
-
VSS (Vehicle speed)
-
RPM (Engine speed)
-
O2S12 (HO2S output voltage)
5. Drive the vehicle and decelerate the engine speed by releasing the accelerator pedal fully when the engine speed is 3,000 rpm or more
.
6. Verify that the HO2S output voltage (PID: O2S12) is 0.3 V or less
while decelerating as shown in the figure.
-
If not as specified, replace the HO2S..
HO2S Heater Inspection
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.
1. Disconnect the negative battery cable..
2. Lift up the vehicle.
3. Remove the floor under cover. (vehicles with floor under cover).
4. Disconnect the HO2S connector.
5. Measure the resistance between HO2S terminals C and D.
-
If not as specified, replace the HO2S..
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HO2S heater resistance
-
2—50 ohms [normal temperature]
Heated Oxygen Sensor (HO2 S) Heater Control
Outline
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 ...
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 ...
Other materials:
Up Switch [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
The up switch detects the shift up operation of the selector lever.
The up switch signal is sent to the TCM via CAN and is used for manual shift
control and engine-transaxle integration control.
Construction
The up switch is installed to the selector l ...
Oil Control Valve (OCV) Removal/Installation [Skyactiv G 2.0]
WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it
is cool before servicing.
1. Disconnect the negative battery cable..
2. Remove the plug hole plate..
3. Remove the ignition coil/ion sensors..
4. Remove the cylinder head cover..
5. Remove in ...
Windshield Washer Hose Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the front over fender..
3. Remove the mudguard (RH)..
4. Remove the windshield wiper arm and blade..
5. Disconnect the windshield washer hose A from the washer motor.
6. Remove the windshield washer hose A from the washer tank hook.
7. ...
