Battery: Testing and Inspection

BATTERY INSPECTION[L3]

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
1. Measure the electrolyte specific gravity using a hydrometer.
- If it is less than the specification, recharge the battery. (See BATTERY RECHARGING [L3].)

Battery electrolyte specific gravity [20 °C (68 °F)]
1.22-1.29

Battery Voltage
1. Inspect the battery as follows:

Step 1-Step 3:

Battery load test current
55D23L (48): 180 A
80D26L (55): 195 A

Standard Specification:

Back-up Current
1. Verify that the ignition switch is off (key has been removed) and that all doors are closed.
2. Remove the battery cover.
3. Disconnect the negative battery cable.
4. Connect the tester between the negative battery terminal and negative battery cable, leave the battery undisturbed for 15 min, and then measure the back-up current.
- If not within the specification, measure the back-up current while removing the fuses one by one from the inside of the main fuse block and the inside of the fuse block.

CAUTION: Operating electrical loads while the back-up current is being measured can damage the tester.

NOTE
- If the battery is not left undisturbed for 15 min, the tester will indicate a high value (approx. 300 mA).
- If the key or any electrical accessory is operated within approx. 15 min after the tester is connected, the battery must be left undisturbed for approx. 15 min from that point.
- For vehicles with the immobilizer system, the system periodically shifts synchronization of the security light flashing. Therefore, 45 mA (0.1 s) current is supplied when the security light is illuminated, and 25 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 30 mA.

Battery back-up current (When the ignition switch is off, the ignition key is removed, and all doors are closed.)
Vehicles with immobilizer system: 25-45 mA
Vehicles without immobilizer system: 30 mA or less

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