Several control units are applied to electronically controlled vehicles. These units perform each control with informations from various sensors. Thus, sharing signal information from sensors is needed, so CAN communication type whose communication speed is high and insensitive to electrical noise by spark generation is adopted to controlling power-train(engine, atutomatic transaxle, ABS, TCS, ECS)AFLS ECU is input some informations(engine speed, steering angle sensor's signal, vehicle speed) in order to maintain optimum headlamp condition through CAN communication. AFLS ECU determine range performance to headlamp in according with brake switch signal When critical braking.
AFLS ECU set this code If input value(brake switch signal) is out of available range.
Item
Detecting Condition
Possible Cause
DTC Strategy
Signal monitoring
CAN communication circuit Open/Short
Brake S/W circuit Open/Short
Faulty ECM
Enable Conditions
IG ON
Threshold Value
Brake S/W output not available value.
CAN communication signal not output from Engine ECU
Detecting time
1sec.
Fail Safe
Leveling : performance decline.
Swivelling : normal operation.
Check Lamp
NO