Troubleshooting Guide
TROUBLESHOOTING GUIDEThe charging system troubleshooting guide is shown in the following chart.
STEP 1.
Q: Is the battery in good condition?
YES: Go to Step 2.
NO: Charge or replace the battery.
STEP 2.
Q: Is the generator drive belt in good condition?
YES: Go to Step 3.
NO: Adjust the belt tension or replace the belt.
STEP 3.
Q: Does the charging warning light brightly when the ignition switch is turned on?
YES: Go to Step 4.
NO: -Check the ignition switch.
- Check for burnt-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: Does the oscilloscope show a normal wave pattern? (Refer to Wave pattern check using a oscilloscope.)
YES: Go to Step 7.
NO: 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: Are the generator output line and ground line in good condition?
YES: Go to Step 8.
NO: Check the generator output line and ground line.
STEP 8.
Q: Is the output current normal? (Refer to On vehicle service - Output current test.)
YES: Go to Step 9.
NO: Check the generator.
STEP 9.
Q: Is the regulated voltage normal? (Refer to Regulated voltage test.)
YES: Go to Step 10.
NO: Check the generator
STEP 10.
Q: Is the voltage drops in the generator output line normal?
YES: Generator is normal. Check other systems.
NO: Check the output line.