Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 453
B2337–HORN CONTROL CIRCUIT HIGH – FCM
For a complete wiring diagram Refer to Section 8W.
8H - 10
HORN - ELECTRICAL DIAGNOSTICS
LX
•
When Monitored:
Continuously
•
Set Condition:
When the Front Control Module detects excessive current 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. (Refer to BODY VERIFICATION TEST - VER 1).
Yes
>> Go To 3
LX
HORN - ELECTRICAL DIAGNOSTICS
8H - 11
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. (Refer to
BODY VERIFICATION TEST - VER 1).
No
>> Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1).
8H - 12
HORN - ELECTRICAL DIAGNOSTICS
LX
B2338–HORN CONTROL CIRCUIT OPEN – FCM
For a complete wiring diagram Refer to Section 8W.
LX
HORN - ELECTRICAL DIAGNOSTICS
8H - 13
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