1. AFLS ECU
2. ECM
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(ESP))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 begin to control over 500 engine rpm and AFLS is initialized.
AFLS ECU set this code If input value(engine speed) is message signal timeout or invalid value.
Item
Detecting Condition
Possible Cause
DTC Strategy
Signal monitoring
CAN communication circuit Open/Short
Faulty ECM
Enable Conditions
IG ON
Threshold Value
Engine r.p.m is invalid value
CAN communication signal not output from Engine ECU
Detecting time
0.5 sec.
Fail Safe
Leveling : Before the zero setting(before erasure DTC)
- abnormal operation.
After the zero setting(after erasure DTC)
- normal operation.
Swivelling : Before the zero setting(before erasure DTC)
Check Lamp
NO