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..
-
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:
Controller Area Network (Can)
Outline
The DSC HU/CM sends and receives data to and from other modules via the CAN
system. Refer to MULTIPLEX COMMUNICATION SYSTEM for a detailed explanation of
the CAN system..
Data sent
Cruise control system-related information
DSC system-related information
...
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 ...
Auxiliary Jack/Usb Port Inspection
Auxiliary jack inspection
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Upper console.
b. Auxiliary jack/USB port.
3. Connect a commercially-available plug to the external input unit.
4. Verify that the continuity between the external input unit terminal ...
