OTC One Step Battery Analyzer And Charger (Diesel Engines)
The OTC One Step Battery Analyzer and Charger is designed to help diagnose the cause of a defective battery. Follow the instruction manual supplied with the tester to properly diagnose a vehicle.
| BATTERY SYSTEM DIAGNOSIS | ||
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| CONDITION | POSSIBLE CAUSES | CORRECTION |
| THE BATTERY SEEMS WEAK OR DEAD WHEN ATTEMPTING TO START THE ENGINE. |
1. The electrical system ignition-off draw is excessive. |
1. See Diagnosis and Testing for the appropriate test procedures. Repair the excessive ignition-off draw, as required. |
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2. The charging system is inoperative. |
2. Determine if the charging system is performing to specifications. Refer to Electrical/Charging - Diagnosis and Testing for the appropriate charging system diagnosis and testing procedures. Repair the inoperative charging system, as required. |
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3. The battery is discharged. |
3. Determine the battery state-of-charge using the appropriate battery tester. Charge the inoperative battery, as required. |
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4. The battery terminal connections are loose or corroded. |
4. See Electrical/Battery System/CABLES, Battery - Diagnosis and Testing for the appropriate battery cable diagnosis and testing procedures. Clean and tighten the battery terminal connections, as required. |
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5. The battery has an incorrect size or rating for this vehicle. |
5. See Electrical/Battery System - Specifications for the proper battery size and rating. Replace an incorrect battery, as required. |
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6. The battery is inoperative. |
6. Test the battery using the appropriate battery tester. Replace the inoperative battery, as required. |
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7. The starting system is inoperative. |
7. Determine if the starting system is performing to specifications. Refer to Electrical/Starting - Specifications . Repair the inoperative starting system, as required. |
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8. The battery is physically damaged. |
8. Inspect the battery for loose terminal posts or a cracked and leaking case. Replace the damaged battery, as required. |
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| THE BATTERY STATE OF CHARGE CANNOT BE MAINTAINED. |
1. The battery has an incorrect size or rating for this vehicle. |
1. See Electrical/Battery System - Specifications for the proper battery size and rating. Replace an incorrect battery, as required. |
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2. The battery terminal connections are loose or corroded. |
2. See Electrical/Battery System/CABLES, Battery - Diagnosis and Testing for the appropriate battery cable diagnosis and testing procedures. Clean and tighten the battery terminal connections, as required. |
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3. The electrical system ignition-off draw is excessive. |
3. See Diagnosis and Testing for the appropriate test procedures. Repair the excessive ignition-off draw, as required. |
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4. The battery is inoperative. |
4. Test the battery using the appropriate battery tester. Replace the inoperative battery, as required. |
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5. The starting system is inoperative. |
5. Determine if the starting system is performing to specifications. Refer to Electrical/Starting - Specifications . Repair the inoperative starting system, as required. |
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6. The charging system is inoperative. |
6. Determine if the charging system is performing to specifications. Refer to Electrical/Charging - Diagnosis and Testing for the appropriate charging system diagnosis and testing procedures. Repair the inoperative charging system, as required. |
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7. Electrical loads exceed the output of the charging system. |
7. Inspect the vehicle for aftermarket electrical equipment which might cause excessive electrical loads. |
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8. Slow driving or prolonged idling with high-amperage draw loads in use. |
8. Advise the vehicle operator, as required. |
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| THE BATTERY WILL NOT ACCEPT A CHARGE. | 1. The battery is inoperative. | 1. Test the battery using the appropriate battery tester. Replace the inoperative battery, as required. |