1989 Ford Mustang Automatic Door Locks

Tiny
CSLEAD1
  • MEMBER
  • 1989 FORD MUSTANG
  • V8
  • 2WD
  • AUTOMATIC
  • 99,999 MILES
The automatic door locks won't work and you can't lock with key or manuly. Is it vacuum, electric or whats wrong?
Sunday, March 15th, 2009 AT 8:41 PM

1 Reply

Tiny
DAVE H
  • MECHANIC
  • 13,383 POSTS
ALL DOOR LOCKS DO NOT OPERATE
Check for blown fuse and replace if necessary. Check wiring and connections between circuit breaker and door lock switches for open or short. Check relay and bracket attaching screws for poor ground. Check left control switch for open ground circuit. See DOOR LOCK SWITCH in TESTING section of this article.
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Sunday, March 15th, 2009 AT 9:54 PM

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