Honda 2005 FOURTRAX FOREMAN TRX500 TM Service Manual page 357

BATTERY/CHARGING SYSTEM
TROUBLESHOOTING
BATTERY IS DAMAGED OR WEAK
1. Battery Inspection
Remove the battery (page 18-5).
Check the battery condition using the recommended battery tester.
RECOMMENDED BATTERY TESTER: BM-210-AH, BM-210 or BATTERY MATE or equivalent
Is the battery in good condition?
NO - Faulty battery.
YES - GO TO STEP 2.
2. Battery Current Leakage Inspection
Install the battery (page 18-5).
Check the battery current leakage (Leak test: page 18-7).
STANDARD: 1 mA max. (FM/FE models)
0.1 mA max. (TM model)
Is the current leakage below standard value?
NO - GO TO STEP 3.
YES - GO TO STEP 4.
3. Battery Current Leakage Inspection with Regulator/Rectifier Connector Disconnected
Disconnect the regulator/rectifier 3P black connector and recheck the battery current leakage.
Is the current leakage below standard value?
NO - • Shorted wire harness.
• Faulty ignition switch.
YES - Faulty regulator/rectifier.
4. Alternator Charging Coil Inspection
Check the alternator charging coil (page 18-8).
STANDARD: 0.1 - 1.0 Q (20°C/68°F)
Is the resistance within the specified range?
NO - Faulty charging coil.
YES - GO TO STEP 5.
5. Charging Voltage Inspection
Measure and record the battery voltage using a digital multimeter (page 18-5).
Start the engine.
Measure the charging voltage (page 18-8).
Compare the measurements to result of the following calculation.
STANDARD: Measured Battery Voltage < Measured Charging Voltage < 15.5 V
Is the charging voltage within the specified range?
NO - GO TO STEP 6.
YES - faulty battery
6. Regulator/Rectifier Harness Inspection
Perform the regulator/rectifier wire harness inspection (page 18-8).
Are the measurements correct?
NO - • Open circuit in related wire.
• Loose or poor contacts of related terminal.
• Shorted wire harness.
YES - Faulty regulator/rectifier.
18-4