Honda Accord: Alternator and Regulator Circuit Troubleshooting
Special Tools Required
Alternator, Regulator, Battery, and Starter Tester OTC3131* ^Available through the Honda Tool and Equipment Program 888-424-6857
1. Make sure the battery connections are good and the battery is sufficiently charged.
2. Connect the alternator, regulator, battery & starter tester (OTC3131) to the battery as shown.
NOTE: The probe is used for alternator testing.
3. Start the engine. Hold the engine speed at 3,000 rpm with no load (in N or P (A/T model) or neutral (M/T model)) until the radiator fan comes on, then let it idle.
4. Do the CHARGING SYSTEM TEST.
Does the display indicate voltage within 13.5-вЂќ15.1 V and amperage of 87.5 A or more? YES-Go to step 5.
NO-lf the voltage is less than 13.5 V, go to alternator control circuit troubleshooting (see page 4-28). If the voltage is over 15.1 V and amperage is less than 87.5 A, replace the alternator (see page 4-32) or repair the alternator (see page 4-34).
5. Check the diode condition on the display.
Does the display indicate GOOD? YES-The diode is OK. Troubleshooting is complete.ll NO-lf the display indicates BAD, replace the alternator (see page 4-32) or repair the alternator (see page 4-34), then retest.B NOTE If the display indicates N/A, the diode pattern could not be diagnosed. Repeat the test. If N/A appears repeatedly, replace the alternator.
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