TOYOTA PREVIA 91-97 REPAIR MANUAL

2-18 ENGINE ELECTRICAL

Troubleshooting Ba

Problem

Sic Charging System Problems

Cause Solution

Noisy alternator Loose mountings

Loose ^Irive pulley

Worn gearings

Brush rjioise

Internalcircuits shorted (High

Tighten mounting bolts

Tighten pulley

Replace alternator

Replace alternator

Replace alternator

pitched whine)

Squeal when starting engine or

accelerating

Indicator light remains on or

ammeter indicates discharge

(engine running)

Car light bulbs continually burn out —

battery needs water continually

Car lights tlare on acceleration

Low voltage output (alternator light

flickers continually or ammeter

needle wanders)

• Glazed
  
  
  • Broken
  
  
  
  


• Broken
  
  
  • Interna
  
  
  • Defect!
  
  
  • Alterna
  
  
  • Battery
    
    
    • Interna
      prob
    
    
    • Loose
    
    
    • Dirty o
    
    
    • Interne
      prot
    
    
    
    
  
  
  
  

or loose belt

ibelt

or disconnected wires

alternator problems

l/e voltage regulator

tor/regulator overcharging

low

alternator/regulator

ems

Dr worn belt

corroded connections

alternator/regulator

ems

• Replace or adjust belt


• Install belt


• Repair or connect wiring


• Replace alternator


• Replace voltage regulator/alternator
  
  
  • Replace voltage
    regulator/alternator
  
  
  • Charge or replace battery
  
  
  • Replace alternator/regulator
  
  
  • Replace or adjust belt
  
  
  • Clean or replace connections
  
  
  • Replace alternator/regulator