Battery: Testing and Inspection

BATTERY INSPECTION

Inspection and Verification

1. Verify that the customer concern by operating the system.




2. Visually inspect for obvious signs of mechanical or electrical damage. Visual Inspection Chart
3. If an obvious cause for a concern is found, correct the cause before proceeding to the next step.
4. If the fault is not visually evident, proceed to the pinpoint test.

Battery Condition Test

NOTE: Failure to fully charge the battery before retesting may cause false readings.

Pin point test
1. Verify the battery condition using the Battery Analyzer.
- If the meter read, GOOD BATTERY, inspect the generator.
- If the meter read, GOOD-RECHARGE, charge the battery and inspect the generator.
- If the meter read, CHARGE & RETEST, fully charge the battery and retest.
- If the meter read, REPLACE BATTERY, install a new battery.
- If the meter read, BAD CELL-REPLACE, install a new battery.

Battery




1. Inspect the battery as follows:

Electrolyte gravity
1. Measure the electrolyte gravity using a hydrometer.
- If it is less than the specification, recharge the battery.

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.