Symptom Related Diagnostic Procedures
TROUBLESHOOTING HINTSCharging warning light dose not go on when the ignition switch is turned to ON, before the engine starts.
- Check the bulb.
Charging warning light dose not switch off after the engine starts.
- Check the IC voltage regulator inside the generator. Discharged or overcharged battery.
- Check the IC voltage regulator inside the generator. The charging warning light illuminates dimly.
- Check the diode (inside the combination meter) for a short-circuit.
TROUBLESHOOTING GUIDE
The charging system troubleshooting guide is shown in the following steps.
STEP 1.
Q: Check the battery.
OK: Go to Step 2.
NG: Charge or replace the battery
STEP 2.
Q: Check the generator drive belt.
OK: Go to Step 3.
NG: Adjust the belt tension or replace the belt.
STEP 3.
Q: Does the charging warning light shine brightly when the ignition switch is turned on?
YES: Go to Step 4.
NO:
- Check the ignition switch.
- Check for burned-out charging warning light.
- Check the generator.
- Check the charging warning light-related circuits.
STEP 4.
Q: Does the charging warning light go out after starting the engine?
YES: Go to Step 5.
NO: Check the generator.
STEP 5.
Q: Is an oscilloscope available?
YES: Go to Step 6.
NO: Go to Step 7.
STEP 6.
Q: Check by using the oscilloscope.
OK: Go to Step 7.
NG: Check the generator.
STEP 7.
- Engine: 2,500 r/min
- Headlight: ON (high beam)
- Voltage between generator terminal B and the positive battery terminal
OK: 0.5 V or less
- Voltage between the negative battery terminal and generator body
OK: 0.5 V or less
Q: Check the generator output line and ground line.
OK: Go to Step 8.
NG: Check the generator output line and ground line
STEP 8.
Q: Perform the output current test.
OK: Go to Step 9.
NG: Check the generator.
STEP 9.
Q: Perform the Regulated voltage test.
OK: Go to Step 10.
NG: Check the generator.
STEP 10.
Q: Test for voltage drops on the generator output line.
OK: Generator is normal. Check other systems.
NG: Check the output line