Symptom Chart

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. 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	Fuse(s) Circuitry Instrument cluster	REFER to MODULE COMMUNICATIONS NETWORK article.
The instrument cluster is inoperative	Fuse(s) Circuitry Instrument cluster	Go to Pinpoint Test A .
Incorrect fuel gauge indication	Circuitry Fuel pump module assembly Flex-fuel module and converter wire harness (if equipped) Fuel tank Fuel level sensor Instrument cluster	Go to Pinpoint Test B .
Incorrect voltage gauge indication	Circuitry Instrument cluster	Go to Pinpoint Test C .
Incorrect oil pressure gauge indication	Circuitry Base engine concern 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 speedometer/odometer is inoperative/incorrect	Tire size PCM Instrument cluster	Go to Pinpoint Test F .
The tachometer is inoperative	PCM Instrument cluster	Go to Pinpoint Test G .
The door ajar warning indicator is never/always on	Instrument cluster	Go to Pinpoint Test H .
The safety belt warning indicator is never/always on	Circuitry Restraints control module (RCM) Instrument cluster	Go to Pinpoint Test I .
The anti-lock brake system (ABS) warning indicator is never/always on	ABS module Instrument cluster	Go to Pinpoint Test J .
The anti-lock brake system (ABS) warning indicator is always on	Instrument cluster ABS module	REFER to VEHICLE DYNAMIC SYSTEMS article.
The brake warning indicator is never on	Circuitry Brake fluid level switch Parking brake switch Instrument cluster	Go to Pinpoint Test K .
The brake warning indicator is always on	Circuitry Brake fluid level switch Parking brake switch Instrument cluster	Go to Pinpoint Test L .
The charging system warning indicator is never/always on	PCM Instrument cluster	Go to Pinpoint Test M .
The air bag warning indicator is never on	Circuitry RCM Instrument cluster	Go to Pinpoint Test N .
The air bag warning indicator is always on	Circuitry RCM Instrument cluster	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
The high beam indicator is never on	Circuitry Instrument cluster	Go to Pinpoint Test O .
The LH/RH turn signal indicator is never on	Circuitry Instrument cluster	Go to Pinpoint Test P .
The 4X4 HIGH/4X4 LOW range indicator is never/always on	PCM Instrument cluster	Go to Pinpoint Test Q .
The speed control indicator is never/always on	PCM Instrument cluster	Go to Pinpoint Test R .
The wrench warning indicator is never/always on	PCM Instrument cluster	Go to Pinpoint Test S .
The O/D OFF indicator is never/always on	PCM Instrument cluster	Go to Pinpoint Test T .
The integrated circuit display is inoperative	Instrument cluster	VERIFY that the instrument cluster operates correctly. If the instrument cluster is inoperative, go to Pinpoint Test A . If the instrument cluster operates correctly, INSTALL a new instrument cluster. TEST the system for normal operation.
The compass display is inoperative	Circuitry Compass module Instrument cluster	REFER to INFORMATION AND MESSAGE CENTER article.
The tire pressure monitoring system (TPMS) warning indicator is never/always on	TPMS concern Vehicle security module (VSM) Instrument cluster	Go to Pinpoint Test U .
The malfunction indicator lamp (MIL) is never/always on	PCM Instrument cluster	Go to Pinpoint Test V .
The traction control indicator is never/always on	ABS module Instrument cluster	Go to Pinpoint Test W .
The outside air temperature display is inoperative/inaccurate	Circuitry Outside air temperature sensor Instrument cluster	Go to Pinpoint Test X .