Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Lincoln >> 2003 >> Navigator RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Exterior Lighting) >> Diagnosis And Testing >> Headlamps >> Symptom Chart >> Notes

Symptom Chart: Notes

WARNING: This page is about a different car, the 2003 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM CHART

Condition Possible Sources Action
No communication with the front electronic module
  • Circuitry.
  • Front electronic module (FEM).
REFER to MODULE COMMUNICATIONS NETWORK .
No communication with the instrument cluster module
  • Circuitry.
  • Instrument cluster.
REFER to INFORMATION, GAUGES AND WARNING DEVICES .
Both headlamps are inoperative
  • Headlamp switch.
  • Front electronic module (FEM).
  • Instrument cluster.
Go To PINPOINT TEST A .
The low beams are inoperative
  • Front electronic module (FEM).
INSTALL a new FEM. REFER to MODULE COMMUNICATIONS NETWORK . TEST the system for normal operation.
The high beams are inoperative
  • Circuitry.
  • Multifunction switch.
  • Front electronic module (FEM).
  • Instrument cluster.
Go To PINPOINT TEST B .
One low beam headlamp is inoperative
  • Circuitry.
  • High intensity discharge (HID) relay (if equipped).
  • Ballast (if equipped).
  • Front electronic module (FEM).
Go To PINPOINT TEST C .
One high beam headlamp is inoperative
  • Circuitry.
  • Front electronic module (FEM).
Go To PINPOINT TEST D .
The headlamps are on continuously
  • Circuitry.
  • Headlamp switch.
  • Multifunction switch.
  • Front electronic module (FEM).
  • Instrument cluster.
Go To PINPOINT TEST E .
The flash-to-pass feature is inoperative
  • Multifunction switch.
INSTALL a new multifunction switch. REFER to STEERING SYSTEM . TEST the system for normal operation.
The power supply relay is inoperative - all switched system power (SSP) features
  • Circuitry.
  • Battery junction box (BJB).
  • Front electronic module (FEM).
  • Rear electronic module (REM).
  • Relay
Go To PINPOINT TEST F .
The power supply relay is inoperative - switched system power (SSP) 1
  • Circuitry.
  • Relay.
  • Battery junction box (BJB).
Go To PINPOINT TEST G .
The power supply relay is inoperative - switched system power (SSP) 2
  • Circuitry.
  • Relay.
  • Battery junction box (BJB).
Go To PINPOINT TEST H .
The power supply relay is inoperative - switched system power (SSP) 3
  • Circuitry.
  • Relay.
  • Battery junction box (BJB).
Go To PINPOINT TEST I .
The power supply relay is inoperative - switched system power (SSP) 4
  • Circuitry.
  • Relay.
  • Battery junction box (BJB).
Go To PINPOINT TEST J .