1988 Component Location Views 99

Figure 1:

1988 LAMPS INFO AND COMPONENT LOCATION





130 AUTOMATIC HEADLAMPS/DELAYED EXIT 1988





1988 AUTOMATIC HEADLAMPS/DELAYED EXIT 131


132 AUTOMATIC HEADLAMPS/DELAYED EXIT 1988


HOW THE CIRCUIT WORKS

The Automatic Headlamps/Delayed Exit (AUTOLAMP) circuit automatically turns Headlamps and Exterior Lamps on and off when the ON-OFF control in the Main Light Switch is set to ON.

Automatic Lamps

A Light Sensor/Amplifier mounted on the top left dash panel senses darkness. As resistance of the photocell increases to a set value, the Light Sensor/Amplifier applies power to the Autolamp Relay, which turns on the lamps. A light emitting diode (LED) located in the Autolamp Time Control Switch lights when the autolamp is in use.

A Lamps On Adjusting Screw sets the automatic lamps for EARLY or LATE. If it is necessary to have the lamps turn on earlier than the factory setting, turn the Lamps On Set Screw toward EARLY. Turn toward LATE for a later turn-on. Regular operation of the headlamps from the Main Light Switch overrides the autolamp control.

Delayed Exit

The Delayed Exit system is turned on by moving the AUTO dial (on the Autolamp Switch) away from OFF position. Turning the dial toward MAX increases the resistance, increasing the length of time the lamps will stay on after the Ignition Switch is turned OFF.


For further diagnostic information refer to section 32-12 of the shop manual.


COMPONENT LOCATION Page-
Figure
Autolamp Relay # 1 Attached to top rear of shake brace 133-1
Autolamp Relay # 2 Attached to top rear of shake brace 133-1
Fuse Panel Behind LH side of I/P 153-1
LCD Dimming Relay Behind center of I/P, left of glove box 133-1
Light Sensor/Amplifier Attached to top underside of I/P 133-1
Multi-Function Switch Top LH side of steering column 145-1


Refer to Location Index page 203 for Connector, Splice and Ground Descriptions and Locations.


TROUBLESHOOTING HINTS

CONDITION POSSIBLE CAUSE ACTION

^ Delayed Exit does not work, ^ Bad Autolamp Time Control ^ Check Light Sensor/Amplifier
autolamps do Switch ^ Check Autolamp Time Control
Switch
^ Check for a short in DB/O (217)
wire

^ Delayed Exit time cannot be ^ Bad Autolamp Time Control ^ Check Autolamp Time Control
varied Switch Switch
^ Replace Light Sensor/
Amplifier if Autolamp Time
Control Switch is OK

^ Autolamps and delayed exit do ^ Bad Autolamp Time Control ^ Check Autolamp Time Control
not work Switch Switch
^ Check Light Sensor/Amplifier

^ Autolamps do not work, ^ Bad light sensor ^ Check that Light Sensor/
delayed exit does ^ Amplifier is not covered
^ Check Light Sensor/Amplifier
^ Check Autolamp Relays

^ When using Delayed Exit, ^ Open at time input of Light ^ Check Autolamp Time Control
headlamps and exterior lamps Sensor/Amplifier Switch
stay on for approximately 15 ^ Check DB/O (217) wire
minutes

Figure 1 - Instrument Panel Wiring (Taurus):

1988 COMPONENT LOCATION VIEWS 133

Figure 1 - Instrument Panel Wiring (Sable):

134 COMPONENT LOCATION VIEWS 1988