Durango 2WD V8-4.7L VIN N (2001)
The Courtesy lights and illuminated entry feature are controlled by the Central Timer Module (CTM). The CTM will activate the courtesy lamps,
including Map Lights and the Dome Lights when either the dome lamp switch is turned ON or a door is opened. The courtesy lamps will fade to
OFF immediately when all doors are closed with the dome lamp switch in the OFF position.
The illuminated entry feature operates under the following conditions:
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RKE "unlock"
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Driver/Passenger door is opened
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Unlocking either the driver or passenger using the key (vehicles equipped with security system)
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The dome lamp switch is turned ON
Once activated, the illuminated entry will "fade to OFF" after 3 to 5 seconds under the following conditions:
All doors are closed and:
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RKE "lock signal is received or
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Manual actuated power "lock" signal is received or
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Ignition switch is turned to the ON position or
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30 seconds have elapsed without any other action
Addition RKE unlock actuation before the expiration of illuminated entry will not reset timer. Opening any door before the 30 second timer
expires, will reset the entry time to 30 seconds and the illuminated entry timer will not begin counting down again until all doors are closed.
The Cargo lamps are controlled by the CTM. Placing the dome lamp switch in the cargo lamp position grounds an input to the CTM. The CTM
then sends voltage to the cargo lamps.
The Interior lamp defeat feature will not allow any interior lamp to be turned ON. This is accomplished through an input to the CTM from the
dome lamp switch.
The CTM provides battery protection by shutting down the interior lamps due to the following.
Leaving a door open, dome lamp switch ON, reading/vanity lamp switch ON or glove box door open for more than 15 minutes while the ignition
is OFF.
POWER DOOR LOCKS/REMOTE KEYLESS ENTRY
The CTM controls the door lock actuator assemblies to handle locking and unlocking with the key fob or interior switch.
Vehicles that are equipped with the Vehicle Theft Security System will also have the central locking feature. With the central locking feature,
when the cylinder lock switch is turned to the lock position all the doors will lock. For unlocking, if the key is turned to the unlock position once,
only that door will unlock. If the key is then turned a second time to the unlock position, all the doors will unlock.
There is also a door lock inhibit feature that prevents power locking of the doors if the ignition is OFF and the key is in the ignition.
Automatic or "rolling locks" are included as a programmable feature. If the vehicle is moving approximately 15 mph and approximately 10
degrees of throttle opening is seen by the PCM, (the PCM will send this info to the CTM via the PCI bus) indicating acceleration, the CTM will
cycle the lock actuators to lock the doors.
The highline CTM provides for Remote Keyless Entry (RKE)
The RKE system is placed in the programming mode by the DRB III, or by the customer program features. The system will store up to four key
fob codes. Two fobs are supplied with the truck, additional fobs may be purchased through the parts department. Through the DRB III, erasing and
programming of one key fob without deleting the others is possible. If the key fob is stolen, all the fob codes stored previously may be erased to
provide the owner of the vehicle with an extra sense of security.
VEHICLE COMMUNICATION
The Programmable Communication Interface or PCI Bus is a single wire multiplexed network capable of supporting binary encoded messages
shared between multiple modules. The PCI bus circuit is identified as D25 and is violet with a yellow tracer. Additional tracer colors may be
added to the yellow in order to distinguish between different module connections. The modules are wired in parallel. Connections are made in the
harness using a splice.
The splice called the Diagnostic Junction Port, serves as the "Hub" of the bus. The Diagnostic Junction Port provides an access point to isolate
most of the modules on the bus in order to assist in diagnosing the circuit. The following modules are used on the DN:
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Airbag Control Module
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A/C Heater Control
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Central Timer Module
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Controller Antilock Brake
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Compass Mini-Trip Computer
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Electro/Mechanical Instrument Cluster
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Powertrain Control Module
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Radio
