Whenever the headlamps or parking lamps are on voltage is supplied to the manually operated dimming level control switch in instrument cluster through the parking lamp feed circuit 9. The output of the dimming level control switch is then converted into a serial data message that is sent through serial data circuit 1036 to the data link connector (DLC) Splice Pack #206. The Body Control Module (BCM) uses this input to control the dimming of the brake transmission shift lock control PNRDL indicator, the HVAC control assembly (C60 or CJ2), and the electronic traction suspension control switch lamp. The brake transmission shift lock control PNRDL indicator is supplied battery voltage at all times through circuit 240. The electronic traction suspension control switch lamp is supplied voltage through the parking lamp feed circuit 9 whenever the headlamps or parking lamps are on. The BCM provides a pulse width modulated (PWM) ground circuit to vary the intensity of the brake transmission shift lock control PNRDL indicator, and the electronic traction suspension control switch lamp. The HVAC control assembly (C60 or CJ2) receives a pulse width modulated (PWM) voltage supply from the BCM to control the intensity of its display. The HVAC control assembly (C60 or CJ2) is grounded through circuit 150 to Splice Pack #202 to G202.
The class 2 data message which is sent out by the instrument cluster is also used by the LH and RH Door Control Modules (DCM) to control the dimming of the LH door switch illumination and the RH door switch illumination. The DCMs supply the 12 volt feed circuit to the door switch illumination lamps and provide a pulse width modulated (PWM) ground circuit to vary the intensity of the illumination lamps.
Fog Lamp/Rear Compartment Lid Release Switch (Domestic) or Fog Lamp Switch (Export) Illumination Lamp
When the head lamp switch is in the PARK or HEAD position, battery voltage is applied from PKT/LP Mini Fuse® #6 through CKTs 9 and 240 to the fog lamp/rear compartment lid release switch (domestic) or fog lamp switch (export) illumination lamp. Either of these illumination lamps are grounded at the instrument cluster connector terminal B5 through CKT 717.
Inside Rearview Mirror LED
When the head lamp switch is in the PARK OR HEAD position, battery voltage is applied from PKT/LP Mini Fuses® #6 through CKT 9 and 240 to the underhood electrical center. From the underhood electrical center it is sent along CKT 9 to the inside rearview mirror LED indicator. This indicator is grounded by CKT 150 through the Splice Pack #202 to G202.
