Diagnosis Procedure - With Daytime Light System

HEADLAMP AIMING SWITCH


Description

The manual headlamp aiming system uses a headlamp aiming switch to adjust the axis of the headlamp aiming motor. The headlamp aiming switch has four settings, each with a different resistance value. The headlamp aiming motor adjusts to the proper axis based off the position of the headlamp aiming switch.




HEADLAMP AIMING SWITCH


Diagnosis Procedure - With Daytime Light System

Regarding Wiring Diagram information, Headlamp Aiming System (Manual).
1.CHECK HEADLAMP AIMING SWITCH SIGNAL FOR OPEN OR SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect headlamp aiming switch connector M148 (A), headlamp aiming motor LH connector E6 and headlamp aiming motor RH connector E108 (B).





3. Check continuity between the headlamp aiming switch connector M148 terminal 1 (A) and headlamp aiming motor LH E6 and
RH E108 terminal 7 (B).





4. Check continuity between the headlamp aiming switch connector M148 terminal 1 and ground.





Are the continuity test results as specified?
YES - GO TO 2.
NO - Repair the harness or connector.
2.CHECK HEADLAMP AIMING SWITCH





1. Check resistance between the headlamp aiming switch terminals 1 and 2 in each switch position.





Are the resistance check results as specified?
YES - GO TO 3.
NO - Replace the headlamp aiming switch.
3.CHECK HEADLAMP AIMING SWITCH GROUND CIRCUIT





1. Turn the ignition switch OFF.
2. Disconnect headlamp aiming switch connector M148.
3. Check continuity between headlamp aiming switch connector
M148 terminal 2 and ground.





Is continuity as specified?
YES - Inspect headlamp aiming motors.
NO - Repair harness or connector.