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Home >> Mercury >> 2003 >> Mountaineer 4.0 K, RWD >> Repair and Diagnosis >> Electrical >> Gauges >> Information Center - Information, Gauges And Warning Devices >> Diagnosis And Testing >> Instrument Cluster >> Symptom Chart

Symptom Chart

SYMPTOM CHART

Condition Possible Sources Action
No communication with the anti-lock brake system (ABS) module
  • Central junction box (CJB) fuse 22 (10A).
  • Circuitry.
  • J1850 standard corporate protocol (SCP) communication network.
  • ABS module.
 REFER to ANTI-LOCK CONTROL to continue communication diagnosis.
No communication with the vehicle security module
  • Central junction box (CJB) fuse 20 (5A).
  • Circuitry.
  • UART based protocol (UBP) communication network.
  • Vehicle security module.
 REFER to MODULE COMMUNICATIONS NETWORK to continue communication diagnosis.
No communication with the instrument cluster
  • Battery junction box (BJB) fuse 15 (15A).
  • Central junction box (CJB) fuse(s):
    • 15 (5A).
    • 21 (5A).
  • Circuitry.
  • J1850 standard corporate protocol (SCP) communication network.
  • UART based protocol (UBP) communication network.
  • Instrument cluster.
 Go To PINPOINT TEST G .
Incorrect fuel gauge indication
  • Circuitry.
  • Fuel level sensor.
  • Fuel pump module.
  • Fuel tank.
  • Instrument cluster.
 Go To PINPOINT TEST H .
Incorrect voltage gauge indication
  • Circuitry.
  • Charging system.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST I .
Incorrect oil pressure gauge indication
  • Circuitry.
  • Engine oil pressure switch.
  • Instrument cluster.
 Go To PINPOINT TEST J .
Incorrect temperature gauge indication
  • Circuitry.
  • Cylinder head temperature sensor.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST K .
The speedometer/odometer is inoperative
  • Circuitry.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST L .
The tachometer is inoperative
  • Circuitry.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST M .
The door ajar indicator is inoperative (chime is operative)/does not operate correctly
  • Circuitry.
  • Instrument cluster.
  • Vehicle security module.
 Go To PINPOINT TEST N .
The safety belt warning indicator is inoperative (chime is operative)/does not operate correctly
  • Circuitry.
  • Restraint control module (RCM).
  • Safety belt switch (part of the driver belt buckle).
  • Instrument cluster.
 Go To PINPOINT TEST O .
Inaccurate speedometer reading
  • Instrument cluster.
  • Anti-lock brake system (ABS) module.
  • Tires.
 Go To PINPOINT TEST L .
The CHECK FUEL CAP indicator is never on
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST P .
The CHECK FUEL CAP indicator is always on
  • Fuel evaporative system.
  • Powertrain control module (PCM).
 REFER to SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE to continue the diagnosis.
The anti-lock brake system (ABS) warning indicator is never on
  • Circuitry.
  • Instrument cluster.
  • Anti-lock brake system (ABS) module.
 Go To PINPOINT TEST Q .
The anti-lock brake system (ABS) warning indicator is always on
  • Instrument cluster.
  • Anti-lock brake system (ABS) module.
 REFER to ANTI-LOCK CONTROL to continue diagnosis.
The brake warning indicator is never/always on
  • Circuitry.
  • Brake fluid level switch.
  • Parking brake switch.
  • Anti-lock brake system (ABS) module.
  • Instrument cluster.
 Go To PINPOINT TEST R .
The SERVICE ENGINE SOON indicator is never on
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST S .
The SERVICE ENGINE SOON indicator is always on
  • Diagnostic trouble code (DTC) related concern(s).
 REFER to SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE to continue diagnosis.
The charging system warning indicator is never on
  • Charging system.
  • Circuitry.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST T .
The charging system warning indicator is always on
  • Circuitry.
  • Generator (charging system).
  • Powertrain control module (PCM).
  • Instrument cluster.
 REFER to GENERATORS & REGULATORS to continue diagnosis.
The air bag indicator warning is never/always on
  • Circuitry.
  • Restraint control module (RCM).
  • Instrument cluster.
 Go To PINPOINT TEST U .
The high beam indicator is never on
  • High beam indicator bulb.
  • Circuitry.
  • Instrument cluster.
 Go To PINPOINT TEST V .
The LH turn indicator is never on
  • LH turn indicator bulb.
  • Circuitry.
  • Instrument cluster.
 Go To PINPOINT TEST W .
The RH turn indicator is never on
  • RH turn indicator bulb.
  • Circuitry.
  • Instrument cluster.
 Go To PINPOINT TEST X .
The 4X4 HIGH/AWD LOCK range indicator is never/always on
  • Circuitry.
  • Four-wheel drive module.
  • Instrument cluster.
 Go To PINPOINT TEST Y .
The 4X4 LOW range indicator is never/always on
  • Circuitry.
  • Four-wheel drive module.
  • Instrument cluster.
 Go To PINPOINT TEST Z .
The speed control indicator is never/always on
  • Speed control indicator bulb.
  • Circuitry.
  • Speed control servo.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST AA .
The check gauge warning indicator is never/always on
  • Circuitry.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST AB .
The O/D OFF indicator is never/always on
  • Circuitry.
  • Powertrain control module (PCM).
  • Instrument cluster.
 Go To PINPOINT TEST AC .
The low washer fluid indicator is never/always on
  • Circuitry.
  • Low washer fluid switch.
  • Instrument cluster.
 Go To PINPOINT TEST AD .
The traction control indicator is never/always on
  • Anti-lock brake system/traction control/interactive vehicle dynamics (ABS/TC/IVD) module.
  • Instrument cluster.
 Go To PINPOINT TEST AE .
The integrated circuit display is inoperative
  • Battery junction box (BJB) fuse 15 (15A).
  • Central junction box (CJB) fuse(s):
    • 15 (5A).
    • 21 (5A).
  • Circuitry.
  • Instrument cluster.
 If the integrated circuit display is inoperative, Go To PINPOINT TEST AG .
If the temperature display is inoperative, Go To PINPOINT TEST AF .
If the compass is inoperative, Go To PINPOINT TEST AK .
The instrument cluster is inoperative
  • Battery junction box (BJB) fuse 15 (15A).
  • Central junction box (CJB) fuse(s):
    • 15 (5A).
    • 21 (5A).
  • Circuitry.
  • Instrument cluster.
 Go To PINPOINT TEST AG .
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