Symptom Tree t013
| Cause | Correction |
|---|
|
Alternator belt is loose |
Check the alternator belt tension. Refer to Procedure 013-005. |
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|
Alternator pulley is loose on the shaft |
Tighten the pulley. Refer to the manufacturer’s instructions. |
|
|
Alternator drive pulley is loose on the water pump shaft |
Make sure the drive pulley is tight on the shaft. Refer to Procedure 009-004. |
|
|
Battery cables or connections are loose, broken, or corroded (excessive resistance) |
Check the battery cables and connections. Refer to Procedure 013-009. |
|
|
Batteries have failed |
Check the condition of the batteries, replace if necessary. Refer to Procedure 013-007. |
|
|
Vehicle gauge is malfunctioning |
Check the vehicle gauge. Refer to the OEM service manual. |
|
|
Alternator or voltage regulator is malfunctioning |
Test the alternator output. Replace the alternator or voltage regulator if necessary. Refer to Procedure 013-001. |
|
|
Electrical system is “open” (blown fuses, broken wires, or loose connections) |
Check the fuses, wires, and connections. Refer to the OEM service manual and the manufacturer’s wiring diagrams. |
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|
Alternator is overloaded, or alternator capacity is below specification |
Install an alternator with a higher capacity. Refer toProcedure 013-001 and the OEM service manual. |
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|
Battery temperature is above specification |
Position the batteries away from heat sources. Refer to the OEM service manual. |
