Battery
Inspect the battery in the following procedure.

Test load chart

Battery positive voltage with load

Back-up Current
1. Verify that the engine switch is at OFF and that the key has been removed.
2. Disconnect the negative battery cable.
3. Measure the back-up current between the negative battery terminal and the negative battery cable.
- Inspect and repair harnesses and connectors of the fuse at which the current decreases.
Back-up current
20 mA max.
Caution
Battery removal/installation
Battery rechargingMazda 6 Service Manual: Heating
1. Set the mode selector dial to the
position.
2. Set the air intake selector to the outside air position (indicator light turns
off).
3. Set the temperature control dial to the hot position.
4. Set the fan control dial to the desired speed.
5. If dehumidified heating is desired, turn on the ...
Mazda 6 Service Manual: Engine coolant temperature (ect) sensor inspection
Note
Perform the following inspection only when directed.
ECT Sensor Resistance Inspection
1. Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS.)
2. Remove the ECT sensor (located above the starter).
3. Place the ECT sensor in water with a thermometer, and heat the water
gra ...