RAM 1500 Truck 2WD V6-3.9L VIN X (1999)
Central Timer Module: Description and Operation
Interior Lighting
The courtesy lights are controlled by the CTM. The door switches are inputs to the CTM and the courtesy lights are outputs. The glove box lamp and the
ash receiver lamp (if equipped) are not controlled by the CTM, They are hardwired to individual switches and fuses. The ignition key halo lamp is
controlled by the CTM and will remain ON for thirty seconds after the door is closed.
The highline CTM also provides for illuminated entry option. If the CTM detects an unlock signal from the RKE transmitter, a door disarm switch input
or the door jamb switch input, the interior courtesy lights will be turned ON. The illuminated entry function is canceled if the CTM senses and ignition
"ON" condition or the "lock" command from a valid key fob.
If a door is left open or the dome lamp switch is left in the "ON" position for more than fifteen minutes, the CTM will extinguish the lamps to avoid
discharging the battery. If the lamps are turned ON by rotation of the headlamp panel dimmer switch, the CTM will not be able to turn them OFF.
