Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 285
B1478-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER
For a complete wiring diagram Refer to Section 8W.
8A - 66
AUDIO - ELECTRICAL DIAGNOSTICS
LX
•
When Monitored:
•
With the ignition on. Radio volume at 25 or higher.
•
Set Condition:
•
The amplifier detects that the output circuits are shorted together.
Possible Causes
(X393) AMPLIFIED LEFT REAR DOOR SPEAKER (+) CIRCUIT SHORTED TO THE (X303) AMPLIFIED LEFT
REAR DOOR SPEAKER (-) CIRCUIT
AMPLIFIED LEFT REAR DOOR SPEAKER
AMPLIFIER
Diagnostic Test
1.
CHECK FOR AN INTERMITTENT CONDITION
Turn the ignition on, then off, and then on again.
With the scan tool, erase Amplifier DTCs.
Turn the radio on.
Turn the volume level to 25.
With the scan tool, read Amplifier DTCs.
Does the scan tool display active: B1478-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED
TOGETHER?
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 AMPLIFIED LEFT REAR DOOR SPEAKER
Disconnect the Amplified Left Rear Door Speaker.
Measure the resistance of the speaker between the two terminals.
Is the resistance of the speaker less than 1 ohm?
Yes
>> Replace the Amplified Left Rear Door Speaker in accordance with the service information.
Perform BODY VERIFICATION TEST VER-1.
No
>> Go To 3
3.
CHECK THE (X393) AMPLIFIED LEFT REAR DOOR SPEAKER (+) CIRCUIT, AND THE (X303) AMPLIFIED
LEFT REAR DOOR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Measure the resistance between the (X393) Amplified Left Rear Door Speaker (+) circuit, and the (X303) Amplified
Left Rear Door Speaker (-) circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (X393) Amplified Left Rear Door Speaker (+) circuit, and the (X303) Amplified Left Rear Door
Speaker (-) circuit for a short together.
Perform BODY VERIFICATION TEST VER-1.
No
>> Replace the Amplifier in accordance with the service information.
Perform BODY VERIFICATION TEST VER-1.
LX
AUDIO - ELECTRICAL DIAGNOSTICS
8A - 67
B1479-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
•
With the ignition on.
•
Set Condition:
•
This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity
rate of 5 ±1 sec.
Possible Causes
AMPLIFIER
Diagnostic Test
1.
CHECK FOR AN INTERMITTENT CONDITION
Turn the ignition on, then off, and then on again.
With the scan tool, read Amplifier DTCs.
Does the scan tool display active: B1479-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT PERFOR-
MANCE?
Yes
>> Replace the Amplifier in accordance with the service information.
Perform BODY VERIFICATION TEST VER-1.
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.
8A - 68
AUDIO - ELECTRICAL DIAGNOSTICS
LX
B147A-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
LX
AUDIO - ELECTRICAL DIAGNOSTICS
8A - 69
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