Fcm-Left Trail Relay Output Circuit Open - Dodge Ram 2004 Service Manual

EXTERIOR LIGHTING
Symptom:

FCM-LEFT TRAIL RELAY OUTPUT CIRCUIT OPEN

INTERMITTENT CONDITION
INTEGRATED POWER MODULE
FRONT CONTROL MODULE
TRAILER RELAY OUTPUT CIRCUIT OPEN
TEST
1 Turn the ignition on.
With the DRBIII , clear all FCM DTC's.
Actuate the Trailer Tow Lamps.
With the DRBIII , read the DTC information.
Does the DRBIII read: Left Trailer Relay Output Circuit Open?
Yes → Go To 2
→ The condition that caused the symptom is currently not present.
No
2 Turn the ignition off.
Check the IPM to make certain the Left Trailer Tow Relay is present.
Is the Trailer Tow Relay present?
Yes → Go To 3
→ Replace the Integrated Power Module.
No
3 Turn the ignition off
Measure the voltage of the Fused B+ circuit of the Trailer Tow Relay in the IPM.
Is the voltage above 10 volts?
Yes → Replace the Front Control Module.
→ Repair the Trailer Lamp Relay Output Circuit.
No
POSSIBLE CAUSES
ACTION
Inspect the related wiring for a possible intermittent condition.
Look for any chafed, pierced, pinched, or partially broken wires.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
340
APPLICABILITY
All
All
All