High Beam Indicator: Operation

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

The high beam indicator gives an indication to the vehicle operator whenever the headlamp high beams are illuminated. This indicator is controlled on the instrument cluster circuit board based upon a hard wired high beam indicator driver circuit input received by the cluster from the Central Timer Module (CTM). The CTM monitors an input from the headlamp beam select switch circuitry integral to the multi-function switch on the left side of the steering column. The high beam indicator bulb receives battery current on the instrument cluster electronic circuit board through a fused B(+) circuit at all times; therefore, the indicator remains operational regardless of the ignition switch position. The indicator only illuminates when it is provided with a path to ground by the CTM. The high beam indicator may be diagnosed using conventional diagnostic tools and methods. For proper diagnosis of the CTM and the inputs to the CTM that control the high beam indicator driver circuit, a DRBIII(R) scan tool is required. Refer to ELECTRONIC CONTROL MODULES .