BATTERY INSPECTION

BHE011718520W02

Battery

1. Inspect the battery as follows:

Step

Inspection

Action

1
Measure the battery positive voltage.
12.4 V or more
Go to Step 3.
Less than 12.4 V
Go to the next step.
2
Quick charge for 30 min and recheck voltage.
12.4 V or more
Go to the next step.
Less than 12.4 V
Replace the battery.
3
Using the battery load tester, apply load current (see load test chart) and record battery voltage after 15 s. Is voltage more than specification?
Yes
Normal
No
Replace the battery.

Test load chart

Battery

Current load (A)

50D20L
150
75D23L
75D26L
195

Standard specification

Battery temp. (°C {°F})

Minimum voltage (V)

4 {39}
9.3
10 {50}
9.4
16 {61}
9.5
21 {70}
9.6

Electrolyte gravity

1. Measure the electrolyte gravity using a hydrometer.

• If it is less than the specification, recharge the battery. (See BATTERY RECHARGING.)
Standard electrolyte gravity
1.27-1.29 [20 °C {68 °F}]

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 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.
Standard current
20 mA max.

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