Symptom Chart

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, and 2005 Ford E450 Super Duty. 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 instrument cluster	Circuitry Instrument cluster	GO to PINPOINT TEST A .
Incorrect fuel gauge indication	Fuel level sender Circuitry Fuel tank Instrument cluster	GO to PINPOINT TEST B .
Incorrect voltage gauge indication	Circuitry Instrument cluster Powertrain control module (PCM) (dual generator only)	GO to PINPOINT TEST C .
Incorrect oil pressure gauge indication	Circuitry Engine oil pressure switch Instrument cluster	GO to PINPOINT TEST D .
Incorrect temperature gauge indication	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST E .
The tachometer is inoperative	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST F .
The low fuel warning indicator is never/always on	Instrument cluster	GO to PINPOINT TEST G .
Inaccurate speedometer reading	Powertrain control module (PCM) PCM calibration Instrument cluster	CHECK the calibration of the PCM. REFER to MODULE CONFIGURATION . If the PCM is calibrated correctly, GO to PINPOINT TEST H . If the PCM is not calibrated correctly, CALIBRATE the PCM. REFER to MODULE CONFIGURATION . TEST the system for normal operation.
Trip odometer is inoperative, speedometer OK	Instrument cluster	VERIFY the SELECT/RESET button is not binding. If the button is OK, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER .
The speedometer/odometer is inoperative	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST H .
The safety belt warning indicator is inoperative (chime is inoperative/does not operate correctly)	Circuitry Instrument cluster	GO to PINPOINT TEST I .
The BRAKE warning indicator is never on	Circuitry. Instrument cluster. Parking brake switch. Brake fluid level switch.	GO to PINPOINT TEST J .
The BRAKE warning indicator is always on	Circuitry. Base brake system. Anti-lock brake system (ABS) module.	REFER to BRAKE SYSTEM-GENERAL INFORMATION to continue diagnosis of the brake system.
The charging system warning indicator is inoperative	Circuitry Instrument cluster	GO to PINPOINT TEST K .
The anti-lock brake system (ABS) warning indicator is never/always on	Circuitry Instrument cluster	GO to PINPOINT TEST L .
The high beam indicator is inoperative	Circuitry Instrument cluster	GO to PINPOINT TEST M .
The LH turn indicator is inoperative	Circuitry Instrument cluster	GO to PINPOINT TEST N .
The RH turn indicator is inoperative	Circuitry Instrument cluster	GO to PINPOINT TEST O .
The air bag warning indicator is never/always on	Circuitry Restraint control module (RCM) Instrument cluster	GO to PINPOINT TEST P .
The malfunction indicator lamp (MIL) is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST Q .
The check gauge warning indicator is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST R .
The check fuel cap warning indicator is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST S .
The wait to start warning indicator is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST T .
The water in fuel warning indicator is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST U .
The electronic throttle control (ETC) warning indicator is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST V .
The door ajar warning indicator is inoperative (chime is operative/does not operate correctly)	Circuitry Instrument cluster	GO to PINPOINT TEST W .
The instrument cluster is inoperative	Circuitry Instrument cluster	GO to PINPOINT TEST X .