Dodge Ram 2004 - All Gauges Inoperative

Symptom:
*ALL GAUGES INOPERATIVE
POSSIBLE CAUSES
NO RESPONSE - PCI BUS
PCI BUS - POWERTRAIN CONTROL MODULE
PCI BUS - INSTRUMENT CLUSTER
FUSED IGNITION SWITCH OUTPUT CIRCUIT (UNLOCK/RUN) SHORT TO GROUND
INSTRUMENT CLUSTER GROUND CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT (RUN/START) CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT (RUN/START) CIRCUIT SHORT TO GROUND
FUSED IGNITION SWITCH OUTPUT (UNLOCK/RUN) CIRCUIT OPEN
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 NOTE: Diagnose and repair any MIC, PCM (ECM if diesel equipped), or
Communication DTCs before proceeding with this test.
Turn the ignition on.
With the DRBIIIt, select System Monitors, then J1850 Module Scan.
Does the DRBIIIt display MIC PRESENT on the BUS?
All
Yes → Go To 2
No → Refer to the COMMUNICATION category and perform the appro-
priate symptom.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition on.
With the DRBIIIt, select Body, MIC, SYSTEM TESTS, PCM Monitor.
Does the DRBIIIt display PCM INACTIVE on the BUS?
All
Yes → Refer to the COMMUNICATION category and perform the ap-
propriate symptom.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 3
3 Turn the ignition on.
With the DRBIIIt, select Body, MIC, MODULE DISPLAY.
Does the DRBIIIt display NO RESPONSE from MIC?
All
Yes → Refer to the COMMUNICATION category and perform the ap-
propriate symptom.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 4
441
INSTRUMENT CLUSTER