1996 Bronco/F-Series

Section 17-02: Lighting, Interior

1996 F-150, F-250, F-350, F-Super Duty Chassis Cab and Bronco Vehicles Workshop Manual

DIAGNOSIS AND TESTING

Dome Lamp Switch

The dome lamp switch is part of the headlamp switch (11654). Component testing procedures determine whether or not a component is operating properly.
The component wiring connector must be removed before testing. To test a single circuit, select the proper test in the component test procedure.
To test the complete component, perform each of the tests outlined.

WARNING: REMOVE ALL POWER FROM THE WIRING BEFORE PERFORMING THE FOLLOWING COMPONENT TESTS.

NOTE: Use Rotunda 73 Digital Multimeter 105-R0051 or equivalent when performing the following continuity tests.

COMPONENT TESTING PROCEDURE
To Test	Connect Self-Powered Test Lamp or Ohmmeter to Terminals	Move Switch to These Positions	A Good Switch Will Indicate
Headlamp Circuit	38 (BK/O) B1 and 15 (R/Y) H	Off Park Head	Open Circuit Open Circuit Closed Circuit
Park Lamp Circuit	195 (T/W) B2 and 14 (BR) R	Off Park Head	Open Circuit Closed Circuit Closed Circuit
Dome Light Circuit	54 (LG/Y) D1 and 55 (BK/PK) D2 706 (GY) D2	Knob Rotated Fully Counterclockwise (in Detent) Knob Rotated Fully Clockwise (out of Detent)	Closed Circuit Open Circuit
Panel Light Dimmer Circuit	137 (Y/BK) IGN and 294 (W/LB) I	Knob Rotated Counterclockwise from Full Clockwise Position	Ohmmeter Will Show Smoothly Decreasing Resistance to Approx. 11 ohms Max.
Ignition On, Lamps Off Circuit	137 (Y/BK) IGN and 484 (O/BK) DN	Off Park Head	Closed Circuit Open Circuit Open Circuit
Cluster Dimmer Circuit	294 (W/LB) I and 484 (O/BK) DN	Off Park Head	Open Circuit Closed Circuit Closed Circuit