Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM2005MAGNUM R/T, AWDREPAIR AND DIAGNOSISELECTRICALCHARGING SYSTEMSBATTERY SYSTEMBATTERYSTANDARD PROCEDUREUSING MICRO 420 BATTERY TESTERBATTERY TESTING
2005 Dodge and Ram Magnum R/T, AWD
Battery Testing
2005 Dodge and Ram Magnum R/T, AWDSECTION Battery Testing
- If testing the battery OUT-OF-VEHICLE, clean the battery terminals with a wire brush before testing, (Refer to ELECTRICAL/BATTERY SYSTEM - CLEANING) .
- 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 terminals . 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.
- Connect the tester to the battery or jumper posts, the red clamp to positive (+) and the black clamp to negative (-).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.
- Using the ARROW key select in or out of vehicle testing and press ENTER to make a selection.
- 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 and display the results. Refer to BATTERY TEST RESULTS TABLE
noted below.CAUTION: If REPLACE BATTERY is the result of the test, 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.
- 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.
BATTERY TEST RESULTS TABLE
| BATTERY TEST RESULTS | |
|---|---|
| GOOD BATTERY | Return to service |
| GOOD - RECHARGE | Fully charge battery and return to service |
| CHARGE & RETEST | Fully charge battery and retest battery |
| REPLACE BATTERY | Replace the battery and retest complete system |
| BAD-CELL REPLACE | Replace the battery and retest complete system |
NOTE:
The SERVICE CODE is required on every warranty claim submitted for battery replacement.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.