Component Tests, Headlamps

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

Headlamp Switch

The component connector MUST BE REMOVED before testing. To test a single circuit within the component, select that circuit under the column TO TEST. To test the complete component, perform all tests.

Connect the tester to the terminals shown in the second column and operate the component as shown in the third column.

To Test	Connect Self-Powered Test Lamp or Ohmmeter to Terminals	Move Switch to These Positions	A Good Switch Will Indicate
Headlamp Circuit	Pin B1, Circuit 38 (BK/O) and Pin H, Circuit 15 (R/Y)	Off Park Head	Open Circuit Open Circuit Closed Circuit
Park Lamp Circuit	Pin B2, Circuit 195 (T/W) and Pin R, Circuit 14 (BR)	Off Park Head	Open Circuit Closed Circuit Closed Circuit
Dome Light Circuit	Pin D1, Circuit 54 (LG/Y) and Pin D2, Circuit 55 (BK/PK) Pin D2, Circuit 706 (GY)	Knob rotated fully counterclockwise (In detent)	Closed Circuit
		Knob rotated fully clockwise (Out of detent)	Open Circuit
Panel Light Dimmer Circuit	Pin R, Circuit 14 (BR) and Pin I, Circuit 294 (W/LB)	Knob rotated left from full clockwise position	Ohmmeter Will Show Smoothly Increasing Resistance to approx. 11 ohm max.
Ignition On, Lamps Off Circuit	Pin IGN, Circuit 137 (Y/BK) and Pin DN, Circuit 484 (O/BK)	Off Park Head	Closed Circuit Open Circuit Open Circuit
Cluster Dimmer Circuit	Pin I, Circuit 294 (W/LB) and Pin DN, Circuit 484 (O/BK)	Off Park Head	Open Circuit Closed Circuit Closed Circuit

Circuit Common Point

Refer to Section 18-01.

Headlamps ON Warning Chime/Buzzer

Refer to Section 13-09.