Ignition Run/Start Mismatch - Dodge Ram 2004 Service Manual

Symptom:

IGNITION RUN/START MISMATCH

INSTRUMENT CLUSTER
POWER DISTRIBUTION CENTER
FRONT CONTROL MODULE
POWER DISTRIBUTION CENTER
TEST
1 NOTE: Diagnose and repair any Airbag, MIC or PCM DTCs before proceed-
ing with this test.
With the DRBIII , select MIC, Monitors, then Ignition State.
Does the DRBIII display Run and Start ?
Yes → Go To 2
No
2 NOTE: Ensure that the battery is fully charged before proceeding with this
test.
Turn the ignition on.
Measure the voltage of the IPM Fuse #50.
Is the voltage above 10.5 volts?
Yes → Go To 3
No
3 Turn the ignition off.
Disconnect the FCM from the IPM.
Measure the internal resistance of the IPM between the #50 Fuse output terminal
and the IPM/FCM connector pin 48.
Is the resistance above 5.0 ohms?
Yes → Replace the PDC in accordance with the Service Information.
No
POSSIBLE CAUSES
ACTION
→ Replace and configure the Instrument Cluster in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
→ Replace the PDC in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
→ Replace the FCM in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
IGNITION, POWER, ACCESSORY
421
APPLICABILITY
All
All
All