Mazda 3 Service Manual: Headlight Leveling Actuator Inspection

Mazda 3 Service Manual / Body / Lighting & Horn / Exterior / Headlight Leveling Actuator Inspection

NOTE:

Headlight leveling actuator are integrated with the front combination light.
For the actuator inspection of the headlight auto leveling system, perform the headlight leveling actuator operation inspection..

1. Measure the voltage at each terminal is as indicated in the Terminal Voltage Lists.

If the voltage is not as specified in the Terminal Voltage Lists, inspect the parts under “Inspection item (s)”.

If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the front combination light.

Terminal Voltage List (Reference)

Terminal	Signal	Connection	Test condition		Voltage (V)/Continuity	Action
F	Headlight leveling actuator signal	Headlight leveling switch	Light switch at HEAD position	Switch position 0 position	approx. 10.5	Headlight leveling switch (See HEADLIGHT LEVELING SWITCH INSPECTION.) Related wiring harness
				Switch position 1 position	approx. 9.2
				Switch position 2 position	approx. 6.2
				Switch position 3 position	approx. 4.9
I	Headlight leveling actuator power supply	Headlight relay (LO)	Light switch at HEAD position		B+	Headlight relay (LO) (See RELAY INSPECTION [SKYACTIV-G 2.0].). Related wiring harness
			Light switch at OFF position		1.0 or less
L	GND	Headlight leveling switch Body ground	Under any condition		1.0 or less	Headlight leveling switch (See HEADLIGHT LEVELING SWITCH INSPECTION.) Related wiring harness

Headlight Bulb Removal/Installation

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High Mount Brake Light Bulb Removal/Installation

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