COOLANT TEMPERATURE SENSOR INSPECTION
id304000100400
Function Inspection
1. Connect the M-MDS to the DLC-2.
2. Switch the main power ON (READY off).
3. Display PCM PIDs [ECT_VOLT] and [ECT].
(See PID/DATA MONITOR INSPECTION.) (See PID/DATA MONITOR TABLE [PCM (e-SKYACTIV (E))].)
4. Compare the voltage and temperature indications for PIDs [ECT_VOLT] and [ECT] with the standard in the table indicated below.
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Standard
|
ECT_VOLT
|
ECT
|
|
V
|
°C {°F}
|
|
Approx. 3.10
|
20 {68}
|
|
Approx. 2.16
|
40 {104}
|
|
Approx. 1.40
|
60 {140}
|
|
Approx. 0.87
|
80 {176}
|
|
Approx. 0.54
|
100 {212}
|
Resistance Inspection
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Warning
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<<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.
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― 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
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Warning
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• The EV system is hot immediately after driving and charging, and can cause severe burns. Turn off the EV system and wait until it is cool before performing the servicing.
• 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.
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― 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
1. Disconnect the negative lead-acid battery terminal.
(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)
2. Remove the coolant temperature sensor.
(See COOLANT TEMPERATURE SENSOR REMOVAL/INSTALLATION.)
3. Place the detection part of the coolant temperature sensor in water and while gradually increasing the water temperature, measure the resistance between coolant temperature sensor terminals A and B.
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Resistance
|
Coolant temperature (°C {°F})
|
Resistance (kΩ)
|
|
20 {68}
|
Approx. 2.45
|
|
80 {176}
|
Approx. 0.318
|
Characteristic graph
