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Home >> Lincoln >> 2007 >> Navigator 4WD >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Starting System >> Diagnostic Tests >> Starting System >> Symptom Chart

Symptom Chart

Symptom Chart

Condition Possible Sources Action
  • The engine does not crank and the relay does click (all vehicles)
  • Battery
  • Battery junction box (BJB) fuse 40 (30A)
  • BJB
  • Starter motor/solenoid
  • Circuit
  • The engine does not crank and the relay does not click (early build vehicles)
  • PCM
  • Smart junction box (SJB)
  • BJB
  • Battery
  • Starter relay
  • Ignition switch
  • Circuit
  • The engine does not crank and the relay does not click (late build vehicles)
  • PCM
  • SJB
  • BJB
  • Battery
  • Starter relay
  • Start diode
  • Ignition switch
  • Circuit
  • The engine cranks slowly
  • Battery
  • Starter motor/solenoid
  • Circuit
  • Unusual starter noise
  • Starter motor mounting
  • Starter motor
  • Flexplate
  • The starter spins but the engine does not crank
  • Starter motor
  • Damaged flexplate ring gear teeth
  • INSPECT the starter motor mounting and engagement. INSTALL a new starter motor. REFER to Starter Motor .
  • INSPECT the flexplate for damaged, missing or worn teeth. REPAIR as required.