BATTERY INSPECTION

BATTERY INSPECTIONSM3330085

BATTERY INSPECTION

id011700800600

Inspect Lead-Acid Battery

Warning

• The lead-acid battery fluid is toxic. Be careful when handling it.

• The lead-acid battery fluid is highly corrosive. Be careful not to allow it to adhere to clothes or a vehicle body.

• If the lead-acid battery fluid comes in contact with the skin, an eye, or clothes, wash it off well with running water. Especially, if it gets into an eye, wash it off for 15 min and seek treatment by a medical specialist.

Electrolyte Gravity

1.Inspect the lead-acid battery as follows.

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.	1.25 or more	The lead-acid battery is normal.
			1.17–1.25	Charge the lead-acid battery. (See BATTERY RECHARGING.)
			Less than 1.17	Determine a dendrite short and replace the lead-acid battery.(See BATTERY REMOVAL/INSTALLATION [L.H.D.].)

Back-up current

Caution

• Do not apply electrical load when measuring the back-up current. Otherwise, the tester will be damaged.

1.Verify that the main power is switched OFF.

2.Disconnect the negative lead-acid battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

3.Connect the tester between the negative lead-acid battery terminal (battery side) and the negative lead-acid battery terminal (wiring harness side).

Note

• If the measurement is performed without leaving the vehicle for 10 min the tester shows a high value (approx. 300 mA).

• If the key or an electrical device is operated after connecting the tester, the vehicle needs to be left for approx. 40 min.

• For vehicles with the immobilizer system, the back-up current periodically shifts synchronizing with the security indicator light flashing. Therefore, 65 mA (0.1 s) current flows when the security indicator light is turned on, and 40 mA (2 s) current flows when the security indicator light is turned off. In addition, if a measuring instrument that shows an average value is used, it will display approx. 55 mA.

4.Measure the back-up current after leaving the vehicle for 40 min or more.

• If the measured value is not within the standard, remove the fuses in the main fuse block and in the fuse block one by one while measuring the back-up current.

• Inspect and repair the wiring harness and connector for the fuse that shows a decreased current value.

Lead-acid battery current standard (with main power switched OFF, all doors and hood closed)

40—65 mA

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

1.Inspect using the following methods.

Step	Inspection	Results	Action
1	Was the vehicle engine not started for 5 days or more (Ask customer)?	Yes	Replace the lead-acid battery.(See BATTERY REMOVAL/INSTALLATION [L.H.D.].)
1		No	Go to the next step.
2	Using a hydrometer, measure the electrolyte specific gravity of all the cells and identify the one with the lowest electrolyte specific gravity value.	1.25 or more	The lead-acid battery is normal.
		1.17–1.25	Charge the lead-acid battery. (See BATTERY RECHARGING.)
		1.17–1.25	Determine a dendrite short and replace the lead-acid battery.(See BATTERY REMOVAL/INSTALLATION [L.H.D.].)
3	After performing any of the following work, verify that the i-stop warning light (amber) turns off. • Disconnect the negative lead-acid battery terminal and switch the main power ON (READY off) after connection. • After leaving the main power switched OFF for 12 h or more, switch the main power ON (READY off)