Chevrolet Spark manuals

Mazda CX-5 Service & Repair Manual: Heated Oxygen Sensor (HO2 S) Inspection

Mazda CX-5 Service & Repair Manual / Engine / Control / 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..

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.


HO2S Heater Inspection

WARNING:

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.


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:

Seat Belt Inspection
Belt 1. Verify that the belt is installed properly with no twists or kinks. 2. Verify that there is no damage to the seat belt and no deformation of the metal fittings. If there is any malfunction, replace the seat belt. ELR (Emergency Locking Retractor) Except rear center seat b ...

Blind Spot Monitoring (Bsm) Control Module Removal/Installation
1. Disconnect the negative battery cable.. 2. Remove the rear combination light.. 3. Remove the rear bumper.. 4. Disconnect the connector. 5. Remove the nuts. 6. Remove the BSM control module. 7. Install in the reverse order of removal. 8. Perform the BSM radar test.. CAUTION: ...

Oil Pressure Switch Inspection
1. Switch the ignition ON (engine off) and verify that the oil pressure warning light is illuminated. 2. Start the engine and verify that the oil pressure warning light turns off. If the oil pressure warning light is not illuminated or remains illuminated, inspect the wiring harness ...

© 2016-2025 Copyright www.mcx5.org