OPERATION
This can be done using a DRB scan tool or by the
customer. The horn chirp will enter the opposite
state of its current programmed state by receiving
this operation code. The BCM is responsible for keep-
ing track of the horn chirp status.
DIAGNOSIS AND TESTING
REMOTE KEYLESS ENTRY (RKE) SYSTEM
When trouble shooting problems with the Remote
Keyless Entry System, always verify that the power
door lock/unlock switches are functional. If the doors
do not lock/unlock with the power switches, the fol-
lowing modules should be analyzed:
• Lock/Unlock Switches
• Body Control Module
• Lock and unlock relays
• Door lock/unlock motors
If the following modules do not work:
• Remote keyless entry system
• Radio/clock
• Body Control Module
• Door lock switches
A blown fuse is the probable cause. The remote
keyless entry fuse 13 is located in the Junction
Block. To check for a blown fuse, pull the fuse out
slightly, but maintain contact between the fuse ter-
minals and the terminals in Junction Block. Using
the voltmeter probe, check both terminals for 12
volts. If only one terminal measures battery voltage,
the fuse is defective and must be replaced. If neither
terminal measures battery voltage, check for an open
or shorted circuit to the Junction Block, repair as
needed. If battery voltage is still not available, check
the high current fuse G in the Power Distribution
Center, located in the engine compartment.
To diagnose the Remote Keyless Entry (RKE) Sys-
tem, use a DRBIIIt scan tool and refer to Power
Door Lock System in the proper Body Diagnostic Pro-
cedures Manual.
REMOTE KEYLESS ENTRY DIAGNOSIS
To diagnose the Remote Keyless Entry (RKE) Sys-
tem, use a DRB scan tool and refer to the proper
Body Diagnostic Procedures Manual.
SERVICE PROCEDURES
DECK LID RELEASE TOGGLE
Deck lid release toggle is programmed to “one
press” or “two presses” by continually pressing the
unlock button for a minimum of 4 seconds to a max-
imum of 10 seconds. Within the 4-10 second range,
the deck lid release button is depressed. Both buttons
are then released.
HORN CHIRP TOGGLE
Once the transmitters have been programmed, the
horn chirp can be enabled/disabled by sending the
horn chirp toggle operation code to the Body Control
Fig. 2 Remote Keyless Entry Module Location
1 – BODY CONTROL MODULE
2 – CONNECTORS
3 – REMOTE KEYLESS ENTRY MODULE
4 – JUNCTION BLOCK
Fig. 3 Remote Keyless Entry Module/BCM
1 – RKE ANTENNA CONNECTOR
2 – CONNECTORS
3 – RKE MODULE
4 – 20–WAY INTERNAL
LH POWER LOCK SYSTEMS 8P - 5
DESCRIPTION AND OPERATION (Continued)
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