Dakota R/T 2WD V8-5.9L VIN Z LDC (1999)
programming of the CTM sends the proper outputs to control the power lock motors, the headlamp and horn relays, and the courtesy lamps.
Some of the features and functions of the power lock, illuminated entry and RKE systems made possible because of the communication of the
CTM on the CCD data bus network include:
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A door-lock inhibit feature which prevents the power lock system from being energized with a power door lock switch while the driver door is
open if the key is in the ignition and/or the headlamps are on. However, the locks can still be operated manually, with a key, or energized with
the RKE transmitter.
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A Panic Mode feature which can provide additional personal security and protection. When the Panic button on the RKE transmitter is
depressed the vehicle horn will pulse, the headlights will flash, and the interior lights will illuminate on the vehicle for about three minutes, or
until the Panic button is depressed a second time. A vehicle speed of about 24 kilometers-per-hour (15 miles-per-hour) will also cancel the
panic mode.
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An enhanced accident response feature will unlock both doors, then prevent the power door locks from locking the doors for a predetermined
time interval, after receiving a CCD message from the ACM indicating a frontal impact of the vehicle requiring airbag deployment. This
feature will also turn on the courtesy lamps ten seconds after receiving the ACM deployment message, if the CCD vehicle speed message from
the PCM indicates that the vehicle is not moving. Of course, these responses are dependent upon functional battery power and wiring circuitry
following the impact.
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Rolling door locks is a programmable feature of the power lock system. This feature will automatically lock all of the doors after the vehicle
reaches a speed of about 24 kilometers-per-hour (15 miles-per-hour) or greater. This feature will also lock the doors if a door is opened,
then closed again, at any speed above 24 kilometers-per-hour (15 miles-per-hour).
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A programmable feature of the RKE system is the enabling or disabling of the horn chirp following activation of the RKE Lock function. This
feature can be enabled or disabled and, if enabled, the horn chirp duration (twenty or forty milliseconds) can be selected.
One of the features that the high-line CTM supports and controls is the Vehicle Theft Security System (VTSS). In the VTSS, the CTM receives
hard- wired inputs from the door jamb, door lock cylinder, and ignition switches. The programming in the CTM allows it to process the
information from these inputs and send control outputs to energize or de-energize the headlamp relay, horn relay, and the security lamp. The CTM
also sends CCD data bus messages to the Powertrain Control Module (PCM) to control the engine no-run feature of the VTSS.
The high-line CTM also contains the receiver and control logic for the power lock and Remote Keyless Entry (RKE) systems, which are integrated
into the arming, disarming, and triggering functions of the VTSS.
The programmable features of the CTM can be enabled or disabled using the DRB scan tool as described in the proper Diagnostic Procedures.
Refer to Central Timer Module in the Diagnosis and Testing for diagnosis of the base version of the CTM. For diagnosis of the highline version of
the CTM or of the CCD data bus, a DRB scan tool and the proper Diagnostic Procedures are recommended. The CTM cannot be repaired and, if
faulty or damaged, it must be replaced.
This information covers the diagnosis and service of only the hard-wired inputs used by the CTM to determine that a chime tone should be
generated. See Central Timer Module in the Diagnosis and Testing for diagnosis of the base version of the CTM. For diagnosis of the high-line
version of the CTM or of the CCD data bus, a DRB scan tool and the proper Diagnostic Procedures are recommended. The CTM cannot be
repaired and, if faulty or damaged, it must be replaced.
OPERATION
Some of the functions and features that the CTM supports or controls include:
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Chimes for the following conditions:
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Headlamps on with ignition off and driver door open warning
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Key in ignition with ignition off and driver door open warning
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ABS lamp warning (if the vehicle is so equipped)
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Airbag lamp warning
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Check gauges lamp warning
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Low fuel lamp warning
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Low washer fluid lamp warning
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Seat belt reminder lamp warning
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Transmission oil temperature lamp warning (automatic transmission)
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Courtesy lamp time-out (high-line only)
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Intermittent wipe control
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Enhanced accident response (high-line only)
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Horn chirp upon door lock with RKE (customer programmable) (high-line only)
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Illuminated entry (high-line only)
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Power door lock control (high-line only)
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Power lock inhibit (high-line only)
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Remote Keyless Entry (RKE) (high-line only)
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Remote radio switches (high-line only)
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Rolling door locks (customer programmable) (high-line only)