Power Door Locks Stopped Working?

KHLOW2008

MECHANIC
41,815 POSTS

Hi Acrock,

If it is shorted, it will, but if it is an open circuit, faulty actuators would not blow any fuses.

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Thursday, January 21st, 2021 AT 1:20 PM (Merged)

ACROCK

MEMBER
4 POSTS

Thanks for the blow up of the control unit wiring it makes it a lot easier to read. If one of the actuators is bad will it cause the rest not to work or only that door?

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Thursday, January 21st, 2021 AT 1:20 PM (Merged)

KHLOW2008

MECHANIC
41,815 POSTS

Hi Acrock,

If the actuator is shorted to ground, it will affect the others, otherwise no.

At the number one or number three of left front power door lock switch, click it to ground and see if there is any activity from the main control unit, (clicking noise of relay).

If power supply from battery input is available and ground is sufficient, the control unit is faulty.

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Thursday, January 21st, 2021 AT 1:20 PM (Merged)

JIM MCLAUGHLIN

MEMBER
2 POSTS
1987 HONDA CIVIC
4 CYL
2WD
MANUAL
100,000 MILES

The central locking is going nuts.
It is opening and closing the door locks its self when driving.
When I lock doors to go some where. I come back to the car and find the locks open.

Seems to hapen more after I wash car or heavy rain.

Think its a dampness problem or water geting on to electrics somewhere.

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Thursday, January 21st, 2021 AT 1:20 PM (Merged)

KHLOW2008

MECHANIC
41,815 POSTS

Hi Jim,

Problem should be due to door lock switch. Quite often the switchs gets shorted due to water, etc and the signal would trigger the control unit.