Dodge Durango (HB). Manual — part 290
For the Horn System circuit diagram (Refer to 8 - ELECTRICAL/HORN SYSTEM - SCHEMATICS AND DIAGRAMS)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Continuously
•
Set Condition:
When the Front Control Module detects a short to battery on the Horn Relay Control circuit.
Possible Causes
HORN RELAY
POWER DISTRIBUTION CENTER
FRONT CONTROL MODULE
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
With the scan tool, record and erase DTC’s
Operate the Horn Switch several times.
Cycle the ignition from on to off 3 times and leave on.
With the scan tool, read DTC’s.
Does the scan tool display B2337 – HORN CONTROL CIRCUIT
HIGH?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not
present at this time. Using the wiring diagram/schematic
as a guide, inspect the wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2.
HORN RELAY
Turn the ignition off.
Install a known good relay in place of the Horn Relay.
With the scan tool erase DTC’s
Operate the Horn Switch several times.
Cycle the ignition from on to off 3 times and leave on.
With the scan tool, read DTC’s.
Does the scan tool display B2337 – HORN CONTROL CIRCUIT
HIGH?
No
>> Replace the original Horn Relay.
Perform BODY VERIFICATION TEST - VER 1.
Yes
>> Go To 3
HB
HORN SYSTEM - ELECTRICAL DIAGNOSTICS
8H - 7
B2337–HORN CONTROL CIRCUIT HIGH – FCM —
(CONTINUED)
3.
SHORTED POWER DISTRIBUTION CENTER
Remove the Horn Relay.
Disconnect the Front Control Module from the PDC 49 – way connec-
tor.
Turn the ignition on.
Measure the voltage between (X4) Horn Relay Control circuit and
ground.
Is there any voltage present?
Yes
>> Replace the Power Distribution Center.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
8H - 8
HORN SYSTEM - ELECTRICAL DIAGNOSTICS
HB
B2337–HORN CONTROL CIRCUIT HIGH – FCM —
(CONTINUED)
HB
HORN SYSTEM - ELECTRICAL DIAGNOSTICS
8H - 9
B2339–HORN SWITCH STUCK – CLUSTER
For the Horn System circuit diagram (Refer to 8 - ELECTRICAL/HORN SYSTEM - SCHEMATICS AND DIAGRAMS)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Continuously
•
Set Condition:
When the Cluster senses the Horn Switch input for over 30 seconds, this code will set.
Possible Causes
HORN SWITCH
CLOCKSPRING
(X3)HORN SWITCH SENSE CIRCUIT SHORTED TO GROUND
INSTRUMENT CLUSTER
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
With the scan tool, record and erase DTC’s
Operate the Horn Switch several times.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read DTC’s.
Does the scan tool display HORN SWITCH STUCK?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not
present at this time. Using the wiring diagram/schematic
as a guide, inspect the wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2.
(X3)HORN SWITCH SENSE SHORTED
Turn the ignition off.
Disconnect the Cluster C1connector.
Measure the resistance between ground and the (X3) Horn Switch
Sense circuit.
Is the resistance below 1000.0 ohms?
No
>> Replace the Cluster.
Perform BODY VERIFICATION TEST - VER 1.
Yes
>> Go To 3
8H - 10
HORN SYSTEM - ELECTRICAL DIAGNOSTICS
HB
B2339–HORN SWITCH STUCK – CLUSTER —
(CONTINUED)
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