CURRENT SENSOR INSPECTION

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DTC inspection

1.  Connect the M-MDS to the DLC-2.

2.  Perform the PCM DTC inspection using the M-MDS.

(See DTC INSPECTION.)

•  If any DTC related to the current sensor is present, repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (e-SKYACTIV)].)

Visual inspection

Warning

<<High voltage>>

•  Always observe the following thoroughly to ensure safety when inspecting or removing/installing parts in the motor compartment. Otherwise, the high voltage circuit may operate on the vehicle regardless of whether or not the main power is switched OFF or ON (READY off or on). If this occurs, it could cause electrical shock and result in serious injury or, in the worst case, death.

―  Do not select high voltage battery cooling on center display after EV system stops

―  Do not open/close doors frequently with main power switched OFF

―  Do not perform normal charging or quick charging

―  Switch to connected vehicle maintenance mode (MyMazda App connected vehicle)

―  Cancel climate control timer

―  Operate center display and turn off battery heater operation

Warning

•  The cooling fan may suddenly start operating regardless of the main power switch position. Keep hands and tools away from the cooling fan even if the cooling fan is not operating to prevent injury, or damage to the cooling fan. When servicing the cooling fan or parts near the cooling fan, ensure the following.

―  Do not perform normal charging or quick charging

―  Do not select high voltage battery cooling on center display after EV system stops

―  Do not open/close doors frequently with main power switched OFF

―  Access connected vehicle maintenance mode (MyMazda App connected vehicle)

―  Cancel climate control timer

―  Operate center display and turn off battery heater operation

Caution

•  Be careful not to contact the positive lead-acid battery terminal.

•  If the nut for the current sensor is loosened with the negative lead-acid battery terminal connected to the battery, excessive torque will be applied to the negative lead-acid battery terminal and the lead-acid battery terminal will be damaged. When removing the negative lead-acid battery terminal and current sensor, be careful not to damage the lead-acid battery terminal.

•  Connect the negative lead-acid battery terminal before connecting the current sensor connector. If the current sensor connector is connected first, the PCM may mistakenly recognize a signal from the current sensor and learn the lead-acid battery condition incorrectly.

•  Verifying the tightness while holding the current sensor may apply excessive force to the terminal and the terminal could loosen, causing poor EV system starting. When verifying the tightness of the negative lead-acid battery terminal, only hold the terminal area, not the current sensor.

1.  Disconnect the current sensor connector.

2.  Disconnect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

3.  Remove the current sensor.

(See CURRENT SENSOR REMOVAL/INSTALLATION.)

4.  Verify that there is no damage to the current sensor, and no corrosion and damage to the connector.

•  If there is a malfunction, replace the current sensor. (See CURRENT SENSOR REMOVAL/INSTALLATION.)