RAM 1500 Truck 2WD V6-3.9L VIN X (1999)
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.
Both versions of the CTM are mounted under the driver side end of the instrument panel, inboard of the instrument panel steering column opening.
Refer to Central Timer Module Replacement of Instrument Panel Systems for the service procedures.
The programmable features of the CTM can be enabled or disabled using the DRB scan tool as described in the proper Diagnostic Procedures.
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 engine 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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Ignition key lamp timer
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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 (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 (programmable) (high-line only)
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Speed sensitive intermittent wipe (high-line only)
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Vehicle Theft Security System (VTSS) (high-line only) (if the vehicle is so equipped)
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Wipe after wash (high-line only).
CENTRAL TIMER MODULE DIAGNOSTIC TROUBLE CODES
Door Disarm Switch Failure
Door lock Switch Failure
Door Unlock Switch Failure
Wiper Park Switch Failure
EEPROM Checksum Failure
Internal ROM Test Failure
Central Timer Module Diagnostic Trouble Codes
Door Disarm Switch Failure
Door lock Switch Failure
Door Unlock Switch Failure
Wiper Park Switch Failure
