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Symptom Troubleshooting Chart - Charging System

SYMPTOM TROUBLESHOOTING CHART - CHARGING SYSTEM

Symptom Troubleshooting Chart - Charging System
Problem Possible Cause Action
  • Battery is Discharged or Battery Voltage is Low
  • Circuitry.
  • High key-off current drain(s).
  • Battery.
  • Generator.
See CHARGING SYSTEM PINPOINT TEST 1: BATTERY IS DISCHARGED OR BATTERY VOLTAGE IS LOW 
  • Charging System Warning Indicator is ON with the Engine Running (The Charging System Voltage Does Not Increase)
  • Circuitry.
  • Generator.
See CHARGING SYSTEM PINPOINT TEST 2: CHARGING SYSTEM WARNING INDICATOR IS ON WITH THE ENGINE RUNNING (CHARGING SYSTEM VOLTAGE DOES NOT INCREASE)  .
  • Charging System Overcharges (Battery Voltage Greater Than 15.5 Volts)
  • Circuitry.
  • Generator.
See CHARGING SYSTEM PINPOINT TEST 3: CHARGING SYSTEM OVERCHARGES (BATTERY VOLTAGE IS GREATER THAN 15.5 VOLTS)  .
  • Charging System Warning Indicator is ON with the Engine Running and the Battery Voltage Increases
  • Circuitry.
  • Instrument Cluster.
  • Generator.
See CHARGING SYSTEM PINPOINT TEST 4: CHARGING SYSTEM WARNING INDICATOR IS ON WITH THE ENGINE RUNNING AND THE BATTERY INCREASES VOLTAGE  .
  • Charging System Warning Indicator is OFF with the Ignition Switch in the RUN Position and the Engine OFF
  • Bulb.
  • Circuitry.
  • Instrument Cluster.
  • Generator.
See CHARGING SYSTEM PINPOINT TEST 5: CHARGING SYSTEM WARNING INDICATOR IS OFF WITH THE IGNITION SWITCH IN THE RUN POSITION AND THE ENGINE OFF  .
  • Charging System Warning Indicator Flickers or is Intermittent
  • Smart Junction Box (SJB) Fuse 10(10A).
  • Generator Connector Unplugged (A-168).
  • Circuitry.
  • Generator.
See CHARGING SYSTEM PINPOINT TEST 6: CHARGING SYSTEM WARNING INDICATOR FLICKERS OR IS INTERMITTENT  .
  • Generator is Noisy
  • Bolts or Brackets.
  • Drive Belt.
  • Generator or Pulley.
See CHARGING SYSTEM PINPOINT TEST 7: GENERATOR IS NOISY  .
  • Radio Interference
  • Generator
  • Circuitry.
  • In-vehicle entertainment system.
See CHARGING SYSTEM PINPOINT TEST 8: RADIO INTERFERENCE  .