Chrysler 300/300 Touring/300C, Dodge Magnum. Manual - part 290
•
When Monitored:
•
Amplifier Bus wake-up. Amplifier reset with scan tool.
•
Set Condition:
•
The Amplifier detects an open condition on the speaker output circuit.
Possible Causes
(X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT OPEN
(X299) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT OPEN
SUBWOOFER
AMPLIFIER
Diagnostic Test
1.
CHECK FOR AN INTERMITTENT CONDITION
Turn the ignition on.
Turn the radio on.
With the scan tool, erase Amplifier DTCs.
With the scan tool, reset the amplifier.
With the scan tool, read Amplifier DTCs.
Does the scan tool display active: B1481-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT OPEN?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche-
matic as a guide, inspect the wiring and connectors.
Perform BODY VERIFICATION TEST VER-1.
2.
CHECK THE OPERATION OF THE SUBWOOFER
Disconnect the Subwoofer harness connector.
Turn the radio on and turn the volume to mid level.
With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Subwoofer 1 circuits in the Ampli-
fied Subwoofer harness connector.
Is the voltage present greater than 1 volt?
Yes
>> Replace the Amplified Subwoofer in accordance with the service information.
Perform BODY VERIFICATION TEST VER-1.
No
>> Go To 3
3.
CHECK THE (X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT FOR AN OPEN
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Measure the resistance of the (X300) Amplified Subwoofer 1 (+) circuit between the Amplifier C1 harness connector
and the Amplified Subwoofer harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Go To 4
No
>> Repair the (X300) Amplified Subwoofer 1 (+) circuit for an open.
Perform BODY VERIFICATION TEST VER-1.
8A - 86
AUDIO - ELECTRICAL DIAGNOSTICS
LX