Battery Testing

If testing the battery OUT-OF-VEHICLE, clean the battery terminals with a wire brush before testing. If the battery is equipped with side post terminals, install and tighten the supplied lead terminal stud adapters. Do not use steel bolts. Failure to properly install the stud adapters, or using stud adapters that are dirty or worn-out may result in false test readings.
If testing the battery IN-THE-VEHICLE, make certain all of the vehicle accessory loads are OFF, including the ignition. The preferred test position is at the battery terminal. If the battery is not accessible, you may test using both the positive and negative jumper posts. Select TESTING AT JUMPER POST when connecting to that location.

NOTE: Multiple batteries connected in parallel must have the ground cable disconnected to perform a battery test. Failure to disconnect may result in false battery test readings.

NOTE: When testing the battery in a PT Cruiser, always test at the battery terminals

Fig 1: Identifying Micro 420 Battery Tester

Courtesy of DAIMLERCHRYSLER CORP.

Connect the tester to the battery or jumper posts, the red clamp to positive (+) and the black clamp to negative (-).
Using the ARROW key select in or out of vehicle testing and press ENTER to make a selection.

CAUTION: If REPLACE BATTERY is the result of the lest, this may mean a poor connection between the vehicle's cables and battery exists. After disconnecting the vehicle's battery cables from the battery, retest the battery using the OUT-OF-VEHICLE test before replacing.

Fig 2: Identifying Test Results

Courtesy of DAIMLERCHRYSLER CORP.

If not selected, choose the Cold Cranking Amp (CCA) battery rating. Or select the appropriate battery rating for your area (see menu). The tester will then run its self programmed test of the battery an display the results.

NOTE: The SERVICE CODE is required on every warranty claim submitted for battery replacement.

While viewing the battery test result, press the CODE button and the tester will prompt you for the last 4 digits of the VIN. Use the UP/DOWN arrow buttons to scroll to the correct character; then press ENTER to select and move to the next digit. Then press the ENTER button to view the SERVICE CODE. Pressing the CODE button a second time will return you to the test results.