8.5.8 Operation durability of head

8.5.8 Operation durability of head lamp leveling Evaluate the following (1) to (3)
sequentially:
I. In the case that leveling actuator is equipped with a DC motor:
(1) Apply 7,000 cycles of pattern shown in Fig. 35 to the test sample under the conditions of
the temperature of 23  4 C and the voltage of 14 V.
(2) Apply 1,500 cycles of pattern shown in Fig. 35 to the test sample under the conditions of
the temperature of –30  4 C and the voltage of 14 V.
(3) Apply 1,500 cycles of pattern shown in Fig. 35 to the test sample under the conditions of
the temperature of 80  4 C and the voltage of 14 V.
II. In the case that leveling actuator is equipped with a stepping motor:
(1) Apply 15,000 cycles of pattern shown in Fig. 35 to the test sample under the conditions of
the temperature of 23  4 C and the voltage of 14 V.
(2) Apply 7,500 cycles of pattern shown in Fig. 35 to the test sample under the conditions of
the temperature of –30  4 C and the voltage of 14 V.
(3) Apply 7,500 cycles of pattern shown in Fig. 35 to the test sample under the conditions of
the temperature of 80  4 C and the voltage of 14 V.