Dodge Ram 2004 Service Manual page 389

BACKLIGHT DIMMING RX FAILURE (ACTIVE) —
TEST
3 Turn the ignition on.
With the DRBIII in Monitor Display, PCI Bus Messages, look for the VF DIM Msg
Present.
Does the DRB display: VF DIM Msg present: Yes?
Yes → Replace the A/C - Heater Control Module in accordance with the
→ Replace the Instrument Cluster in accordance with the Service
No
ACTION
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
Information.
Perform BODY VERIFICATION TEST - VER 1.
Continued
375
HEATING & A/C
APPLICABILITY
All