Dakota 4WD V6-3.9L VIN X (1997)
Security Lamp/Indicator: Description and Operation
SYSTEM OPERATION
The security lamp gives an indication of the status of the Vehicle Theft Security System (VTSS). The lamp is controlled by a hard-wired input to
the instrument cluster from the Central Timer Module (CTM). The lamp is turned on by the instrument cluster circuitry for about two seconds
when the ignition switch is turned to the On position as a bulb test.
After the bulb test, the CTM turns the lamp on or off based upon the arming status of the VTSS. If the security lamp stays on for about thirty
seconds after the ignition switch is turned to the On position, it indicates that Chrysler Collision Detection (CCD) data bus communication with
the Powertrain Control Module (PCM) is inoperative, and that the next attempt to arm the VTSS may not be successful.
The Security lamp is an amber lamp located within the instrument cluster on the instrument panel. The Security lamp receives fused battery feed at
all times and is grounded by the high-line Central Timer Module (CTM) to give a visible indication of the Vehicle Theft Security System arming
status.
The Security lamp incandescent bulb and bulb holder can be serviced.
CIRCUIT OPERATION
Vehicle Theft Security System Set Lamp
Power for the Vehicle Theft Security System (VTSS) set lamp is supplied on circuit M1. This is the Ignition-Off Draw (IOD) circuit and protected
by a 10 Amp fuse located in the junction block.
Ground for the lamp is controlled by the Central Timer Module (CTM) on circuit G52.
