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Home >> Lincoln >> 2004 >> Aviator RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 275 (Instrument Cluster System) >> Diagnosis And Testing >> Warning Indicators >> Symptom Chart

Symptom Chart

WARNING: This page is about a different car, the 2003 Lincoln Town Car. 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 module - unable to carry out on-demand self-test on lighting control module
  • Circuitry.
  • Lighting control module (LCM).
  • Headlamp switch.
 REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES .
No communication with the instrument cluster
  • Central junction box (CJB) fuse(s):
    • 4 (7.5A).
    • 12 (15A).
    • 19 (10A).
  • Circuitry.
  • Standard corporate protocol (SCP) communication network.
  • Instrument cluster.
 Go To PINPOINT TEST A .
Incorrect fuel gauge indication
  • Circuitry.
  • Fuel sender.
  • Instrument cluster.
  • Fuel tank.
 Go To PINPOINT TEST B .
Incorrect temperature gauge indication
  • Circuitry.
  • Instrument cluster.
  • Powertrain control module (PCM).
  • Engine coolant temperature sensor.
 Go To PINPOINT TEST C .
The speedometer is inoperative
  • Circuitry.
  • Anti-lock brake system (ABS) module.
  • Instrument cluster module.
 Go To PINPOINT TEST D .
The odometer is inoperative
  • Circuitry.
  • Instrument cluster.
  • Anti-lock brake system (ABS) module.
 Go To PINPOINT TEST E .
The safety belt warning indicator is inoperative (chime is operative)/does not operate correctly
  • Circuitry.
  • Safety belt warning indicator bulb.
  • Lighting control module (LCM).
  • Instrument cluster.
 Go To PINPOINT TEST F .
The DOOR AJAR indicator is inoperative (chime is operative)/does not operate correctly
  • Circuitry.
  • Lighting control module (LCM).
  • Instrument cluster.
 Go To PINPOINT TEST G .
The low oil pressure warning indicator is never/always on
  • Circuitry.
  • Low oil pressure warning indicator bulb.
  • Low engine oil pressure.
  • Oil pressure switch.
  • Instrument cluster.
 Go To PINPOINT TEST H .
The charging system warning indicator is never/always on
  • Circuitry.
  • Charging system warning indicator bulb.
  • Generator.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST I .
The BRAKE warning indicator is never/always on
  • Circuitry.
  • Brake warning indicator bulb.
  • Brake fluid level.
  • Low brake pressure.
  • Parking brake switch.
  • Brake fluid level switch.
  • Ignition switch.
  • Anti-lock brake system (ABS) module.
  • Instrument cluster.
 Go To PINPOINT TEST J .
The high beam indicator is never/always on
  • Circuitry.
  • Instrument cluster.
  • Lighting control module (LCM).
 Go To PINPOINT TEST K .
The low washer fluid indicator is never/always on
  • Circuitry.
  • Low washer fluid switch.
  • Instrument cluster.
 Go To PINPOINT TEST L .
The AIR BAG warning indicator is never/always on
  • Circuitry.
  • AIR BAG warning indicator bulb.
  • Restraint control module (RCM).
  • Instrument cluster.
 REFER to AIR BAG RESTRAINT SYSTEMS .
The anti-lock brake system (ABS) warning indicator is never/always on
  • Circuitry.
  • Instrument cluster ABS warning indicator bulb.
  • ABS module.
  • Instrument cluster.
 Go To PINPOINT TEST M .
The traction control indicator is never/always on
  • Circuitry.
  • Traction control indicator bulb.
  • Anti-lock brake system (ABS) module.
  • Instrument cluster.
 Go To PINPOINT TEST N .
The O/D OFF indicator is never/always on
  • Circuitry.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST O .
The AIR SUSPENSION indicator is never/always on
  • Circuitry.
  • Air suspension control module.
  • Instrument cluster.
 Go To PINPOINT TEST P .
The SPEED CONTROL indicator is never/always on
  • Circuitry.
  • Speed control servo.
  • Instrument cluster.
 Go To PINPOINT TEST Q .
The CHECK FUEL CAP indicator is never/always on
  • Circuitry.
  • Instrument cluster.
  • Powertrain control module (PCM).
 Go To PINPOINT TEST R .
The SERVICE ENGINE SOON indicator is never/always on
  • Circuitry.
  • Instrument cluster SERVICE ENGINE SOON indicator bulb.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST S .
The turn/hazard indicator is never/always on
  • Circuitry.
  • Instrument cluster turn indicator bulb(s).
  • Instrument cluster.
 Go To PINPOINT TEST T .
The fail-safe cooling warning indicator is never/always on
  • Instrument cluster fail-safe cooling warning indicator bulb.
  • Circuitry.
  • Overheating engine.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST U .
The TRUNK AJAR indicator is never/always on
  • Circuitry.
  • Lighting control module (LCM).
  • Instrument cluster.
 Go To PINPOINT TEST V .
The AUTOLAMP indicator is never/always on
  • Circuitry.
  • Lighting control module (LCM).
  • Instrument cluster.
 Go To PINPOINT TEST W .
The integrated circuit display is inoperative/erratic
  • Central junction box (CJB) fuse(s):
    • 4 (7.5A).
    • 12 (15A).
    • 19 (10A).
  • Circuitry.
  • Instrument cluster.
 Go To PINPOINT TEST X .
The instrument cluster is inoperative
  • Central junction box (CJB) fuse(s):
    • 4 (7.5A).
    • 12 (15A).
    • 19 (10A).
  • Circuitry.
  • Instrument cluster.
 Go To PINPOINT TEST Y .
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