Symptom Chart

WARNING: This page is about a different car, the 2005 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	Circuitry Instrument cluster	GO to PINPOINT TEST A .
Incorrect fuel gauge indication	Circuitry Fuel level sender unit Fuel tank Instrument cluster	GO to PINPOINT TEST B .
Incorrect voltage gauge indication	Instrument cluster	GO to PINPOINT TEST C .
Incorrect oil pressure gauge indication	Circuitry Engine oil pressure 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	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST F .
The tachometer is inoperative	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST G .
The door ajar indicator is inoperative/does not operate correctly	Instrument cluster Vehicle security module	GO to PINPOINT TEST H .
The safety belt warning indicator is inoperative/does not operate correctly	Circuitry Restraint control module (RCM) Safety belt switch (part of the belt buckle) Instrument cluster	GO to PINPOINT TEST I .
The anti-lock brake system (ABS) warning indicator is never on	Circuitry Instrument cluster ABS module	GO to PINPOINT TEST J .
The anti-lock brake system (ABS) warning indicator is always on	Instrument cluster ABS module	REFER to ANTI-LOCK CONTROL to continue diagnosis of the ABS.
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 K .
The malfunction indicator lamp (MIL) is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST L .
The charging system warning indicator is never on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST M .
The charging system warning indicator is always on	Powertrain control module (PCM) Instrument cluster	REFER to CHARGING SYSTEM - GENERAL INFORMATION to continue diagnosis of the charging system.
The air bag warning indicator is never on	Circuitry Restraint control module (RCM) Instrument cluster	GO to PINPOINT TEST N .
The air bag warning indicator is always on	Circuitry Restraint control module (RCM) Instrument cluster	REFER to SUPPLEMENTAL RESTRAINT SYSTEM to continue diagnosis of the air bag system.
The high beam indicator is never on	Circuitry Instrument cluster	GO to PINPOINT TEST O .
The LH/RH turn indicator is never on	Circuitry Instrument cluster	GO to PINPOINT TEST P .
The 4X4 HIGH/4X4 LOW range indicator is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST Q .
The speed control indicator is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST R .
The electronic throttle control (ETC) warning indicator is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST S .
The O/D OFF indicator is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST T .
The integrated circuit display is inoperative	Circuitry Instrument cluster	If the integrated circuit display is inoperative, GO to PINPOINT TEST V .
The integrated circuit display is inoperative	Circuitry Instrument cluster	If the temperature display and the compass display are inoperative, GO to PINPOINT TEST U .
The instrument cluster is inoperative	Circuitry Instrument cluster	GO to PINPOINT TEST V .