Dodge Ram 2004 Service Manual page 412

HEATING & A/C
*A/C - HEATER CONTROL ILLUMINATION INOPERATIVE —
TEST
4 Turn the ignition off.
Disconnect the A/C - Heater Control C1 harness connector.
Disconnect the Instrument Cluster C3 harness connector.
Measure the resistance of the Panel Lamps Driver circuit between the A/C - Heater
Control C1 harness connector and the Instrument Cluster C3 harness connector.
Is the resistance below 5.0 ohms?
Yes → Replace the Instrument Cluster in accordance with the Service
→ Repair the Panel Lamps Driver circuit for an open.
No
ACTION
Information.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
398
Continued
APPLICABILITY
All