Lebaron Landau L4-153 2.5L SOHC Turbo VIN J FI (1990)
Antitheft and Alarm Systems: Technical Service Bulletins
Security Alarm Door Lock - Parts Revision
Models
1990 AC, AG, AJ, AY Bodies
Subject
Parts Revision - Door Lock Cylinders and Disarm Switch - Vehicles Equipped With Vehicle Security Alarm
Index
ELECTRICAL
Date
July 2, 1990
No.
08-11-90
P-1987 (C08-11-0)
BODY CODE LEGEND
AC - DYNASTY/NEW YORKER LANDAU/SALON AG - DAYTONA AJ - LEBARON COUPE/LEBARON CONVERTIBLE AY -
IMPERIAL/NEW YORKER FIFTH AVENUE
DISCUSSION
A mid-year parts revision has been made to the door lock cylinders and the door lock disarm switches. Door lock cylinders have an anti-rotation finger
on them which engages tabs on the security alarm disarm switch. The new lock cylinder has a shorter finger while the new disarm switch has longer tabs.
The disarm switch part numbers are listed below. Lock cylinder part numbers remain the same.
OLD TYPE
NEW TYPE
VEHICLE
(Short Tabs)
(Long Tabs)
AC, AY
4373734/5
4565151/2
AJ
4373838/9
4565153/4
AG
4373840/1
4565155/6
When servicing these components, it is important to comply with these procedures:
FIGURE 1
1.
Replacement of a lock cylinder
On vehicles equipped with an old type disarm switch, the replacement lock cylinder must be an old type lock cylinder (Figure 1). If old type lock
cylinders are not available, then the lock cylinder and the disarm switch must both be replaced as a set with new type design.
