Troubleshooting Hints - Charging System

1. Check for any Diagnostic Trouble Codes (DTC).
2. Before component replacement, check that system connections are clean and tight.
^ Check for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove "GOOD" in a continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
^ Check for proper installation of aftermarket electronic equipment which may effect the integrity of other systems.
3. The battery must be in a charged state to avoid misdiagnosis.
4. The following tests are designed for engines and batteries at normal operating temperatures and assume that there are no engine symptoms which would cause a no start condition. To use the tests under other conditions could result in misdiagnosis.

CHARGING SYSTEM
1. Visually inspect the battery hydrometer.
^ Green eye - battery is charged.
^ Dark eye - battery is discharged. Charge and load test battery. If battery passes load test, refer to System Diagnosis below.
^ Clear or light yellow eye - battery electrolyte is low. Replace battery.
2. Check that the generator connector and generator BATT terminals are both clean and tight.
3. Check that battery connections are clean and tight.
4. Check accessory drive belt.
5. Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems. (Refer to General Troubleshooting Procedures) Diagnostic Aids