Mazda CX-5 Service & Repair Manual: Air Fuel Ratio (A/F) Sensor Inspection
A/F Sensor 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)
-
O2S11 (A/F sensor output current)
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 A/F sensor output current (PID: O2S11) is 0.25 mA or more
while decelerating as shown in the figure.
-
If not as specified, replace the A/F sensor..
A/F Sensor 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. Disconnect the A/F sensor connector.
3. Measure the resistance between A/F sensor terminals A and E.
-
If not as specified, replace the A/F sensor..
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A/F sensor heater resistance
-
1—10 ohms [normal temperature]
Air Fuel Ratio (A/F) Sensor Heater Control
Outline
Based on the control of the A/F sensor heater, a stabilized oxygen concentration
is detected even at low exhaust temperatures, and feedback control of fuel injection
even at cold ...
Air Fuel Ratio (A/F) Sensor 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:
Electric Variable Valve Timing Actuator, Hydraulic Variable Valve Timing Actuator
Removal/Installation
WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it
is cool before servicing.
CAUTION:
Do not disassemble the electric variable valve timing actuator and hydraulic
variable valve timing actuator because they are precision units.
If ...
Cruise Set Indicator Light (Green)
Purpose/Function
Illuminates during the cruise control system operation to inform the driver
that the cruise control system is operating.
Construction
Built into the instrument cluster.
Operation
Illuminates during the cruise control system operation.
...
Front Door Speaker Removal/Installation
Without Bose®
NOTE:
If the procedure is performed while holding the front door speaker cone,
it could deform the cone causing a malfunction. Therefore, perform the procedure
while holding any part other than the cone.
1. Disconnect the negative battery cable..
2. Remove the f ...
