Troubleshooting Guide

The charging system troubleshooting guide is shown in the following steps.

• STEP 1. 

  Q: Is the battery in good condition? (Refer to  BATTERY CHECK  .) 

  • YES:  Go to Step 2.
  • NO:  Charge or replace the battery.
• STEP 2. 

  Q: Is the generator drive belt in good condition? (Refer to  DRIVE BELT (FOR GENERATOR, POWER STEERING OIL PUMP AND A/C COMPRESSOR) (CHECK CONDITION)  .) 

  • YES:  Go to Step 3.
  • NO:  Adjust the belt tension or replace the belt.
• STEP 3. 

  Q: Does the generator malfunction light come on when the ignition switch is turned on? 

  • YES:  Go to Step 4.
  • NO: 
    • Check the ignition switch. (Refer to INSPECTION .)
    • Check for burnt-out generator malfunction light.
    • Check the generator. (Refer to INSPECTION  .)
    • Check the generator malfunction light-related circuits.
• STEP 4. 

  Q: Does the generator malfunction light go out after starting the engine? 

  • YES:  Go to Step 5.
  • NO:  Check the generator (Refer to INSPECTION  .)
• STEP 5. 

  Q: Is an oscilloscope available? 

  • YES:  Go to Step 6.
  • NO:  Go to  Step 7 .
• STEP 6. 

  Q: Dose the oscilloscope show a normal wave pattern? (Refer to  WAVE PATTERN CHECK USING AN OSCILLOSCOPE   .) 

  • YES:  Go to Step 7.
  • NO:  Check the generator. (Refer to INSPECTION  .)
• 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  OUTPUT CURRENT TEST   .) 

  • YES:  Go to Step 9.
  • NO:  Check the generator (Refer to INSPECTION  .)
• STEP 9. 

  Q: Is the regulated voltage normal? (Refer to  REGULATED VOLTAGE TEST   .) 

  • YES:  Go to Step 10.
  • NO:  Check the generator (Refer to INSPECTION  .)
• STEP 10. 

  Q: Is the voltage drop in the generator output line normal? 

  • YES:  Generator is normal. Check other systems.
  • NO:  Check the output line.