Headlight range correction (before 08.2001) — Pinpoint tests (Focus 1)

NOTE: Use a digital multimeter to make all electrical measurements.

PINPOINT TEST O: HEADLIGHT LEVELS DO NOT WORK/WORK INCORRECTLY

STATES	DETAILS/RESULTS/ACTIONS
O1: DETERMINE THE STATE IN WHICH THE MALFUNCTION OCCURS.
	1Enter the ON position.
	2Turn the light switch to the "LOW BEAM" position.
	3Adjust the headlight range control.
	• Both headlights are not adjustable?
	→ Yes
	Go to O6
	→ No
	Left headlight not adjustable: Go to O2
	Right headlight not adjustable: Go to O4
O2: CHECK HEADLAMP LEVELING CONTROL CIRCUIT, LEFT SIDE
	1Enter the OFF position.
	2Disconnect Headlight, Left Side - C835.
	3Enter the ON position.
	4Turn the light switch to the "LOW BEAM" position.
	5Measure the voltage between pin 2 C835 left headlamp, circuit 64-LE45 (blue), wiring harness side and ground.
	• Is voltage registered?
	→ Yes
	Go to O3
	→ No
	REPAIR open circuit 64-LE45 (blue) between junction S106 and left headlamp using the wiring diagrams. Check for proper system operation.
O3: CHECK ELECTRICAL CIRCUITS TO HEADLAMP LEVELING MOTOR, LEFT SIDE
	1Enter the OFF position.
	2Measure the resistance of all electrical circuits between the headlamp leveling motor connector C840, wiring harness side, and the corresponding left headlamp pin, C835, element side.
	• In each case, is the resistance less than 2 ohms?
	→ Yes
	Check the headlight leveling motor, pay attention to mechanical damage. If necessary, INSTALL a new element. Check the correct operation of the system.
	→ No
	REPAIR the appropriate electrical circuit using the electrical diagrams. Check that the system is operating correctly.
O4: CHECK HEADLAMP LEVELING CONTROL CIRCUIT, RIGHT SIDE
	1Enter the OFF position.
	2Disconnect Headlight, Right Side - C834.
	3Enter the ON position.
	4Turn the light switch to the "LOW BEAM" position.
	5Measure the voltage between pin 2 C834 right headlamp, circuit 64-LE46 (blue/red), wiring harness side and ground.
	• Is voltage registered?
	→ Yes
	Go to O5
	→ No
	REPAIR open circuit 64-LE46 (BL/RED) between junction S106 and right headlamp using the wiring diagrams. Check for proper system operation.
O5: CHECK ELECTRICAL CIRCUITS TO HEADLAMP LEVELING MOTOR, RIGHT SIDE
	1Enter the OFF position.
	2Measure the resistance of all electrical circuits between the headlamp leveling motor connector C841, wiring harness side, and the corresponding right headlamp pin, C834, component side.
	• In each case, is the resistance less than 2 ohms?
	→ Yes
	Check the headlight leveling motor, pay attention to mechanical damage. If necessary, INSTALL a new element. Check the correct operation of the system.
	→ No
	REPAIR the appropriate electrical circuit using the electrical diagrams. Check that the system is operating correctly.
O6: CHECK MAIN CONTROL CIRCUIT TO HEADLAMP LEVELING MOTORS
	1Enter the OFF position.
	2Disconnect Headlight, Left Side - C835.
	3Disconnect Light Switch - C320.
	4Measure the resistance between light switch C320 pin 1, circuit 64-LE1 (BL/RED), harness side and left headlamp C835 pin 2, circuit 64-LE45 (BL), harness side.
	• Is the resistance less than 2 ohms?
	→ Yes
	Go to O7
	→ No
	REPAIR open circuit 64-LE1 (Blue/Red) between light switch and S106 junction using the wiring diagrams. Check for proper system operation.
O7: CHECK LIGHT SWITCH GROUND
	1Connect Headlight, left side - C835.
	2Connect Light Switch - C320.
	3Enter the ON position.
	4Turn the light switch to the "FRONT FOG LIGHTS" position.
	5Check the front fog light indicator lamp built into the light switch.
	• Is the indicator light on?
	→ Yes
	Check the light switch. If necessary, INSTALL a new element. Check the system for proper operation.
	→ No
	REPAIR open circuit 31-LE29 (BK) between light switch and ground G14 using the wiring diagrams. Check for proper system operation.