BATTERY INSPECTION [SKYACTIV-G 2.0]

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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. 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		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.	1.25 or more	Battery is normal.
			1.17—1.25	Recharge the battery. (See BATTERY RECHARGING [SKYACTIV-G 2.0].)
			Less than 1.17	Replace the battery because it can be determined as a dendrite short. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

Parasitic Draw

Caution

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

•  Because the “BATT_SOC” value before disconnecting the negative battery cable is required for the battery condition initial learning (i-stop learning), always verify the “BATT_SOC” value before disconnecting the negative battery cable.

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 [SKYACTIV-G 2.0].)

3.  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0].)

Note

•  If the battery is not left undisturbed for 30 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 30 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 battery terminal (battery side) and negative battery terminal (harness side), leave the battery undisturbed for 30 min or more, but less than 2.5 hours, and then measure the parasitic draw.

•  If not within 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, a battery parasitic draw value of 25—45 mA is indicated.

Battery inspection when i-stop warning light (amber) is flashing

1.  Inspect the battery as follows:

Step	Inspection		Action
1	Was the vehicle engine not started for 5 days or more? (Ask the customer)	Yes	Replace the 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.	1.25 or more	Battery is normal.
		1.17—1.25	Recharge the battery. (See BATTERY RECHARGING [SKYACTIV-G 2.0].)
		Less than 1.17	Replace the battery because it can be determined as a dendrite short. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
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 (engine off) after reconnection •  Ignition is switched ON (engine off) after 12 hours or more have elapsed with ignition switched off