Component Location
General Description

AHLS provides driver with the best visibility by adjusting vertical direction of the headlamp. It consists of AHLS ECU, Linkage and Headlamp actuator. AHLS ECU is composed of many IC components, such as A/D(AD converter), EEPROM, ROM, RAM and others.It also contains several different parameter-sets which defines the behavior in different car types and respect different mounting places. For efficient operation of system, The internal components of ECM ( A/D , EEPROM, ROM, RAM ) are checked internally during every start-up sequence.

DTC Description

The ECM sets DTC C1604 if one of component self-test result is negative.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

● ECM internal component monitoring

● Faulty AHLS ECU

Detecting condition

● Engine "ON" and Head lamp"ON"

Detecting mode

Threshold value

Schematic Diagram
Яндекс.Метрика