40 TROUBLESHOOTING
FAILURE CODE [DV03KB]
FAILURE CODE [DV03KB] Action level
Failure code DV03KB
E01 Detail of failure Action of controller Phenomenon on machine
Failure
Drowsiness Alarm Buzzer Output Ground Fault (Translator controller system)
When the controller energizes the drowsiness alarm buzzer, an abnormal current flows through the circuit. •
Stops to energize the drowsiness alarm buzzer circuit.
•
Even if the cause of the failure no longer exists, the machine does not become normal until the starting switch is turned to the OFF position.
Even when the driver status monitor detects drowsiness or drowsy operation, alarm buzzer does not sound.
Related infor- During the troubleshooting, when the starting switch is in the ON position, the drowsiness alarm mation buzzer sounds on and off for some period of time. No.
1
Cause
Procedure, measurement location, criteria and remarks 1.
Starting switch: OFF
2.
Disconnect the connector BZ. Connect the T-adapter to the female side.
3.
Starting switch: ON
Defective drowsiness alarm buzzer
NOTICE
(Internal defect)
If the following voltages are normal and alarm buzzer does not operate, the drowsiness alarm buzzer is defective. Voltage
2
Ground fault in wiring harness (contact with GND)
3
Defective translator controller
Between BZ (female) (1) and (2)
Starting switch: OFF
Max. 1V
Starting switch: ON
20 to 30V
1.
Starting switch: OFF
2.
Disconnect connectors TLC2 and BZ, and connect the T-adapter to female side of TLC2.
Resistance
Between TLC2 (female) (18) and ground
Min. 1MΩ
If no failure is found by the checks above, the translator controller is defective. (Because this is an internal defect, troubleshooting cannot be done.)
Circuit diagram of the drowsiness alarm buzzer
HD785-7
40-15
