Checking headlamp beam height control

Check the cable between the central electronic module (CEM) terminal #9A and the beam adjustment unit #2. Check for a short-circuit to supply voltage. Check for a short-circuit to ground. Check for an open-circuit. 6/38 for left motor and 6/39 for right motor.

HINT: Headlamp beam height control receives power and terminal #3 and is grounded at terminal #1. 

If no faults are found, try replacing the switch and the beam adjustment unit.

Other information 

• To replace light switches, see Switches lights, replacing
• To replace beam adjustment unit, see Motor height control headlamp, replacing .

Fig 1: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the function OK? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  FAULT NOT FOUND:  Troubleshooting has been completed.