BATTERY INSPECTION [MZR 2.0 DISI i-stop]

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Warning

•  Since battery acid is toxic, be careful when handling the battery.

•  Since battery acid is highly corrosive, be careful not to allow it to contact clothing or the vehicle.

•  In case battery acid contacts skin, eyes, or clothing, flush it immediately with running water. Especially if the acid gets in the eyes, flush with water for more than 15 min and get prompt medical attention.

Electrolyte Specific Gravity

Purpose	Step	Inspection	Results	Action
Battery examination (verification of dendrite short)	1	Using a hydrometer, measure the electrolyte gravity of all the cells and identify the one with the lowest electrolyte gravity value.	Main battery: 1.22 or more Sub battery: 1.25 or more	Battery is normal.
			Main battery: 1.17—1.22 Sub battery: 1.17—1.25	Recharge the battery. (See BATTERY RECHARGING [MZR 2.0 DISI i-stop].)
			Less than 1.17	Replace the battery because it can be determined as a dendrite short. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)

Parasitic Draw

1.  Verify that the ignition is off (key has been removed) and that all doors are closed.

2.  Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)

3.  Disconnect the negative main battery cable.

Caution

•  Operating electrical loads while the parasitic draw is being measured can damage the tester.

Note

•  If the battery is not left undisturbed for 10 min or more, but less than 2.5 hours, the tester will indicate a high value (approx. 200 mA).

•  If the ignition or any electrical accessory is operated after the tester is connected, the battery must be left undisturbed for 10 min or more, but less than 2.5 hours from that point.

•  For vehicles with the immobilizer system, the system periodically shifts synchronization of the security light flashing. Therefore, 65 mA (0.1 s) current is supplied when the security light is illuminated, and 40 mA (2 s) current is supplied when the security light is not illuminated. In addition, the measuring instrument, which shows the average value, indicates around 55 mA.

4.  Connect the tester between the negative main battery terminal and negative main battery cable, leave the battery undisturbed for 10 min or more, but less than 2.5 hours, and then measure the parasitic draw.

•  If not within the specification, measure the parasitic draw while removing the fuses one by one from the inside of the main fuse block and the inside of the fuse block.

•  Inspect and repair wiring harnesses and connectors of the fuse where the current has decreased.

Note

•   If the battery is left for 2.5 hours or more, a battery parasitic draw value of 25—50 mA is indicated.

Main battery inspection procedure when i-stop warning light (amber) is flashing

1.  Inspect the battery as follows:

Step	Inspection		Action
1	Has the vehicle not been started for 5 days or more after the i-stop warning light (amber) flashed (ask customer)?	Yes	Replace the main battery.
		No	Go to the next step.
2	Using a hydrometer, measure the electrolyte gravity of all the cells and identify the one with the lowest electrolyte gravity value.	Main battery: 1.22 or more Sub battery: 1.25 or more	Battery is normal.
		Main battery: 1.17—1.22 Sub battery: 1.17—1.25	Recharge the battery. (See BATTERY RECHARGING [MZR 2.0 DISI i-stop].)
		Less than 1.17	Replace the battery because it can be determined as a dendrite short. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)
3	After performing any of the following work, verify that the i-stop warning light (amber) turns off. •  Battery cable is disconnected, and ignition is switched ON after reconnection •  Ignition is switched ON after 12 hours or more have elapsed with ignition switched off