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Tiny
HELMZ
  • MEMBER
  • 2000 TOYOTA 4RUNNER
  • 93,000 MILES
Hi I have a 2000 toyota 4 runner and my power door lock does not work. Drivers side door lock. It unlocks with the remote and the door switch but will not olck with either. I replaced the switch on the key lock in the drivers door and the accuater motor in the door lock latch and checked all the fuses everthing is good. But the door lock switch still does not work. You can hear a clicking noise when you press the unlock switch but not in the lock position. And I also noticed that when the key is in the ignition and the door is open you can hear a clicking noise when you hit the lock switch but once the door is closed there is no sound from the switch. Can you help me please. Thank you for your time. Helmut
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Saturday, February 4th, 2012 AT 2:09 PM

15 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Check the power lock control module. Seems the locking circuit is not in good condition and the cause could be the relay inside the control unit.
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Saturday, February 4th, 2012 AT 2:40 PM
Tiny
HELMZ
  • MEMBER
  • 11 POSTS
I hate to bother you but im not really familiar with where the power lock control module would be. Also is there a way to test if its good or not. Thank you very much for your help. Helmut
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Saturday, February 4th, 2012 AT 8:24 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
The actual name for the control unit is Body ECU, located at driver side junction box, on lower left side of dash.

Attached is a wiring schematic of the power lock system.

If other doors are working correctly, check the connections between actuator inside door panel and the body ECU. Sometine the wires between door and body panel gets damaged due to repetitive opening and closing of doors over a long period of use.
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Sunday, February 5th, 2012 AT 5:48 AM
Tiny
HELMZ
  • MEMBER
  • 11 POSTS
Oh im sorry I forgot to mention that when you press the lock switch on the passenger side it does the same thing as the drivers side it will unlock but not lock. Thank you agian for your time.
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Sunday, February 5th, 2012 AT 1:21 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Apart from the driver door, are other door locks working correctly?
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Monday, February 6th, 2012 AT 11:19 AM
Tiny
HELMZ
  • MEMBER
  • 11 POSTS
The other door locks work manually but not with the key or the remote or door swicth. There is no lock or unlock switch on the rear doors just the driver and passanger door.
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Monday, February 6th, 2012 AT 12:25 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
What I mean is are all other doors locking and unlocking correctly when either the driver or passenger door switch is operated?
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Monday, February 6th, 2012 AT 5:04 PM
Tiny
HELMZ
  • MEMBER
  • 11 POSTS
Yes they will all unlock with the remote, the door switch, and key but will not lock with any of the mentioned
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Monday, February 6th, 2012 AT 5:48 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
At the Body ECU, use a test lamp to ground the Brown/White wire, Terminal # 11 and if the lock works, you have a break in the circuit between the body ECU and door switch.
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Monday, February 6th, 2012 AT 6:10 PM
Tiny
HELMZ
  • MEMBER
  • 11 POSTS
Ok thank you I will try that except its really cold hear in jersey now so I will try when it gets a little warmer. I will let you know how I make out. Thanks again helmut
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Monday, February 6th, 2012 AT 6:21 PM
Tiny
KHLOW2008
  • MECHANIC
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Seems weather is extremely cold at most places.

Take care and keep warm.
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Tuesday, February 7th, 2012 AT 2:05 PM
Tiny
HELMZ
  • MEMBER
  • 11 POSTS
Can you tell me what year 4 runner or toyota fuse box (interior) will work in my 2000 4 runner to get my power door locks to work. I was told that it can be the control in the fuse box.
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Monday, March 19th, 2012 AT 12:12 AM
Tiny
KHLOW2008
  • MECHANIC
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Year model from 19998 to 2002 should be compatible but you should be looking for the Body ECU, which is pluggd into the fuse box.

Have you performed the test outlined previously?
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Monday, March 19th, 2012 AT 12:56 PM
Tiny
HELMZ
  • MEMBER
  • 11 POSTS
Yes and checked all the wires to the switch. When I use the key in the passenger side it unlocks and locks the doors but will not work on the drivers side. Oh the remote does not lock on any doors. What does the body ecu look like so I know what im looking for or at. Thanks again for your help.
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Monday, March 19th, 2012 AT 2:13 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
If it locks and unlock with the passenger side, it should not be a Body ECU fault. You need to check the continuity between the driver door switch and body ECU.

The Body ECU is just a rectngular box that is plugged into the fuse block. Refer to the diagram previous posted for the location.
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Monday, March 19th, 2012 AT 5:08 PM

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