1997 Ford Taurus head lights not turning off

SHARIKS12

MEMBER
1997 FORD TAURUS
6 CYL
FWD
AUTOMATIC
117,000 MILES

The lights on my vehicle started acting up even when I turn the vehicle off and the light switch is on the lights remain on causing my battery to died out. What can be the problem?

Thursday, October 22nd, 2009 AT 4:54 PM

1 Reply

BMRFIXIT

MECHANIC
19,053 POSTS

Check Headlight Switch Operation

Ensure headlight switch is off. Disconnect headlight switch connectors. If headlights are off, replace headlight switch. If headlights are still on, go to next step.

Check Circuit No. 15

Remove autolamp headlight relay from Power Distribution Center (PDC). PDC is located in engine compartment near battery. If headlight are off, go to next step. If headlights are on, repair short to battery in circuit No. 15 (Red/Yellow wire).

Check Autolamp Relay Ground Circuit

Remove autolamp parking light relay from PDC. Measure resistance between ground and terminal No. 2 (Dark Blue/Orange wire) at autolamp headlight relay wiring harness connector.
If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, replace autolamp headlight relay.
Check Light Sensor Amplifier

Reconnect all components. Disconnect light sensor amplifier, located in defroster grille, top left of dash. If headlights are off, replace light sensor amplifier. If headlights are on, repair short to ground in circuit No. 218 (White/Purple wire) to headlight switch.