BATTERY INSPECTION [ZJ, ZY]

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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 gravity

1. Measure the electrolyte gravity using a hydrometer.

• If it is less than the specification, recharge the battery. (See BATTERY RECHARGING [ZJ, ZY].)
Battery electrolyte gravity
1.22-1.29 [20 °C {68 °F}]

Battery voltage

1. Inspect with the following procedure.

Step

Inspection

Action

1
Measure the open circuit voltage of battery.
12.4 V or more
Go to Step 3.
Less than 12.4 V
Go to next step.
2
Quick-charge for 30 min and recheck the voltage.
12.4 V or more
Go to next step.
Less than 12.4 V
Replace battery.
3
Apply a load current (see battery load test current) to the battery using a battery load tester and record the battery voltage after 15 s. Is voltage more than the specification? (See battery positive voltage with load.)
Yes
Normal
No
Replace battery.

Battery load test current
34B19L (27): 110 A

Battery positive voltage with load

Approximate battery temperature

Minimum voltage (V)

4
9.3
10
9.4
16
9.5
21
9.6

Back-up Current

1. Verify that the ignition switch is 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.

• If it exceeds the maximum specification, remove the fuses in the main fuse block and the fuse block one by one while measuring the back-up current.
Caution
• Operating electrical loads while the back-up current is on can damage the tester.
Battery back-up current
Max. 20 mA

4. Inspect and repair wiring harnesses and connectors of the fuse where the current decreases.