Horn Relay Control Circuit Low; Horn Relay Control Circuit Open - Dodge Ram 2004 Service Manual

Symptom List:

HORN RELAY CONTROL CIRCUIT LOW

HORN RELAY CONTROL CIRCUIT OPEN

Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be HORN RELAY CONTROL CIR-
CUIT LOW.
When Monitored and Set Condition:
HORN RELAY CONTROL CIRCUIT LOW
When Monitored: With the ignition ON.
Set Condition: When the Front Control Module detects a short on the Horn Relay Control
circuit.
HORN RELAY CONTROL CIRCUIT OPEN
When Monitored: With the ignition ON.
Set Condition: When the Front Control Module detects an open on the Horn Relay
Control circuit.
FRONT CONTROL MODULE
FUSE #45
INTEGRATED POWER MODULE
INTERMITTENT DTC
TEST
1 Turn the ignition on.
With the DRBIII , record and erase FCM DTC's.
With the DRBIII , read FCM DTC's.
Does the DRBIII display a HORN RELAY CONTROL CIRCUIT DTC active?
Yes → Go To 2
→ Go To 4
No
2 Turn the ignition off.
Check fuse #45 in the IPM.
Is the fuse open?
Yes → Replace the fuse. Check for a short to ground in the Horn Relay
→ Go To 3
No
POSSIBLE CAUSES
ACTION
Output circuit from the IPM to the horns.
Perform BODY VERIFICATION TEST - VER 1.
IGNITION, POWER, ACCESSORY
419
APPLICABILITY
All
All