Symptom Chart

WARNING: This page is about a different car, the 2003 Mercury Mountaineer and 2003 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
The interior lamps are inoperative	Instrument cluster. Vehicle security module.	Go To PINPOINT TEST A .
An individual interior lamp is inoperative	Circuitry.	Go To PINPOINT TEST B .
The interior lamps stay on continuously	Circuitry. Instrument cluster. Door ajar switch. Vehicle security module.	Go To PINPOINT TEST C .
The interior lamps do not turn on with one door open	Vehicle security module. Door ajar switch. Circuitry.	Go To PINPOINT TEST H .
The illuminated entry is inoperative from one/both door handles	Vehicle security module. Door ajar switches. Circuitry.	GO to MODULE COMMUNICATIONS NETWORK .
The illuminated entry is inoperative when using the remote transmitter/keypad	Vehicle security module. Circuitry. Instrument cluster.	GO to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
The demand lighting is inoperative	Circuitry. Instrument cluster.	Go To PINPOINT TEST D .
An individual demand lamp is inoperative	Circuitry.	Go To PINPOINT TEST E .
The interior lamps are inoperative-do not deactivate after time-out	Instrument cluster.	Go To PINPOINT TEST G .
The battery saver does not deactivate after time-out	Instrument cluster.	Go To PINPOINT TEST F .
All battery saver components do not operate	Circuitry. Instrument cluster.	Go To PINPOINT TEST G .