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XJ POWER LOCK SYSTEMS 8P - 1

POWER LOCK SYSTEMS
TABLE OF CONTENTS

page page

GENERAL INFORMATION POWER LOCK MOTOR . . . . . . . . . . . . . . . . . . . . . 4
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1 REMOTE KEYLESS ENTRY TRANSMITTER . . . . . 5
POWER LOCK SYSTEM . . . . . . . . . . . . . . . . . . . . 1 REMOTE KEYLESS ENTRY RECEIVER . . . . . . . . . 5
REMOTE KEYLESS ENTRY SYSTEM . . . . . . . . . . 1 SERVICE PROCEDURES
DESCRIPTION AND OPERATION REMOTE KEYLESS ENTRY TRANSMITTER
POWER LOCK SWITCH . . . . . . . . . . . . . . . . . . . . 2 BATTERY REPLACEMENT . . . . . . . . . . . . . . . . . 6
DOOR MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . 2 REMOTE KEYLESS ENTRY TRANSMITTER
POWER LOCK MOTOR . . . . . . . . . . . . . . . . . . . . . 2 PROGRAMMING . . . . . . . . . . . . . . . . . . . . . . . . 6
REMOTE KEYLESS ENTRY TRANSMITTER . . . . . 2 REMOTE KEYLESS ENTRY RECEIVER
REMOTE KEYLESS ENTRY RECEIVER . . . . . . . . . 2 PROGRAMMING . . . . . . . . . . . . . . . . . . . . . . . . 6
DIAGNOSIS AND TESTING REMOVAL AND INSTALLATION
POWER LOCK SYSTEM AND REMOTE DOOR MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . 7
KEYLESS ENTRY SYSTEM . . . . . . . . . . . . . . . . 3 POWER LOCK MOTOR . . . . . . . . . . . . . . . . . . . . . 7
DOOR MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . 3 REMOTE KEYLESS ENTRY RECEIVER . . . . . . . . . 8

GENERAL INFORMATION through a fuse in the junction block, independent of
the ignition switch.
INTRODUCTION The power lock system includes a lock inhibit fea-
Power locks are optional factory-installed equip- ture, which prevents the doors from being locked by
ment on this model. The power window system and the power lock system if the driver door is open with
the power mirror system are included on vehicles the key in the ignition switch or with the headlamp
equipped with the power lock option. The Remote switch in the On position. However, the lock inhibit
Keyless Entry (RKE) system is an additional option feature will not prevent manual locking of the vehicle
available on vehicles equipped with the power lock using the manual lock buttons or the key cylinders.
option. Refer to 8W-61 - Power Door Locks in Group The power lock system includes the front door
8W - Wiring Diagrams for complete circuit descrip- power lock switches integral to the driver and pas-
tions and diagrams. senger door modules, and the power lock motors
mounted in each door and the liftgate. The power
NOTE: This group covers both Left-Hand Drive lock control circuitry and the power lock and unlock
(LHD) and Right-Hand Drive (RHD) versions of this relays are integral to the Passenger Door Module
model. Whenever required and feasible, the RHD (PDM).
versions of affected vehicle components have been Following are general descriptions of the major
constructed as mirror-image of the LHD versions. components in the power lock system. Refer to the
While most of the illustrations used in this group owner's manual in the vehicle glove box for more
represent only the LHD version, the diagnostic and information on the features, use and operation of the
service procedures outlined can generally be power lock system.
applied to either version. Exceptions to this rule
have been clearly identified as LHD or RHD, if a REMOTE KEYLESS ENTRY SYSTEM
special illustration or procedure is required. The Remote Keyless Entry (RKE) system is a radio
frequency system that allows the use of a remote bat-
tery-powered radio transmitter to control the power
POWER LOCK SYSTEM lock system. On vehicles with the RKE option, the
The power lock system allows all of the doors and power locks can be operated by depressing the Lock
the liftgate to be locked or unlocked electrically by or Unlock buttons of the RKE transmitter. The RKE
operating the switch on either front door trim panel. system includes an illuminated entry feature, which
This system operates with battery power supplied turns on the courtesy lamps for a timed interval
8P - 2 POWER LOCK SYSTEMS XJ
GENERAL INFORMATION (Continued)
(about thirty seconds), when the power locks are PDM contains the control circuitry and the power
unlocked using the RKE transmitter. lock and unlock relays for the entire power lock sys-
The RKE system for this vehicle also features a tem.
customer programmable horn chirp feature. This fea- In its role as the power lock control module, the
ture allows the customer the option of enabling or PDM receives inputs from the battery, the ignition
disabling the horn chirp request that the RKE switch, the DDM, the driver door ajar switch, the
receiver issues as an audible indication that a valid key-in ignition switch, and the headlamp switch. It
Lock signal has been received from the RKE trans- also receives a hard-wired input from the remote
mitter. See Remote Keyless Entry Receiver Program- Keyless Entry (RKE) receiver, if the vehicle is so
ming in this group for more information on this equipped. In response to these inputs, the PDM
feature. sends the proper outputs to control the power lock
The RKE system can retain the vehicle access motors through its integral power lock and unlock
codes of up to four transmitters. The transmitter relays.
codes are retained in memory, even if the battery is The DDM and the PDM are mounted to their
disconnected. If a transmitter is faulty or lost, new respective front door trim panels. The DDM and
transmitter vehicle access codes can be programmed PDM are serviced individually and cannot be
into the system using a DRB scan tool and the repaired. If the DDM or PDM, or any of the switches
proper Diagnostic Procedures manual. and circuitry that they contain are faulty or dam-
The RKE system consists of the remote key fob aged, the complete DDM or PDM unit must be
transmitter and a radio receiver with program logic. replaced.
The RKE receiver is installed in an RKE housing on
the headliner of the vehicle, or in the housing of the POWER LOCK MOTOR
optional overhead console, depending upon how the In the power lock and Remote Keyless Entry
vehicle is equipped. (RKE) systems, the locks are actuated by a reversible
Following are general descriptions of the major electric motor mounted within each door and the lift-
components in the RKE system. Refer to the owner's gate. The power lock motor direction is controlled by
manual in the vehicle glove box for more information the battery and ground feeds from the power lock
on the features, use and operation of the RKE sys- and unlock relays integral to the Passenger Door
tem. Module (PDM).
The power lock motors cannot be repaired and, if
faulty or damaged, the entire motor must be
DESCRIPTION AND OPERATION replaced.

POWER LOCK SWITCH REMOTE KEYLESS ENTRY TRANSMITTER
The power locks are controlled by a two-way switch The Remote Keyless Entry (RKE) system transmit-
that is integral to the Driver Door Module (DDM) ter is equipped with two buttons, labeled Lock and
and the Passenger Door Module (PDM) mounted in Unlock. It is also equipped with a key ring and is
the trim panel of its respective front door. Each designed to serve as a key fob. The operating range
switch is illuminated by a light-emitting diode when of the transmitter radio signal is up to 7 meters (23
the ignition switch is turned to the On position. The feet) from the RKE receiver.
power lock switches provide a hard-wired lock or Each transmitter has a different vehicle access
unlock signal to the power lock system control cir- code, which must be programmed into the memory of
cuitry, which is located in the PDM. the RKE receiver in the vehicle in order to operate
The power lock switches and their lamps cannot be the RKE system. See Remote Keyless Entry Trans-
repaired. If the switches are damaged or faulty, the mitter Programming in this group for more informa-
entire PDM or DDM unit must be replaced. tion.
The transmitter operates on two Panasonic
DOOR MODULE CR2016 (or equivalent) batteries. Typical battery life
A Driver Door Module (DDM) and a Passenger is from one to two years. The transmitter cannot be
Door Module (PDM) are used on all models equipped repaired and, if faulty or damaged, it must be
with power locks and power windows. Each door replaced.
module houses both the front door power lock and
power window switches. In addition to the switches REMOTE KEYLESS ENTRY RECEIVER
for its own door, the DDM houses individual switches On models with the Remote Keyless Entry (RKE)
for each passenger door power window, a power win- option, an RKE receiver is mounted in an RKE hous-
dow lockout switch and the power mirror switch. The ing, or in the overhead console housing on the vehicle
XJ POWER LOCK SYSTEMS 8P - 3
DESCRIPTION AND OPERATION (Continued)
headliner. The RKE receiver is a radio frequency unit transmitter, see the Power Lock Motor diagnosis in
that also contains the RKE system program logic. this group.
The RKE receiver also performs as a smart relay for

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