Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 278
4.
CHECK OPERATION OF THE AMPLIFIED LEFT FRONT DOOR SPEAKER
Turn the ignition off.
Reconnect and reinstall the Left Front Door Speaker.
Measure the resistance of the speaker circuit between the Amplifier C1 harness connector and ground..
Is the resistance below 10K ohms?
Yes
>> Replace the Left Front Door Speaker in accordance with the service information.
Perform BODY VERIFICATION TEST VER-1.
No
>> Replace the Amplifier in accordance with the service information.
Perform BODY VERIFICATION TEST VER-1.
8A - 38
AUDIO - ELECTRICAL DIAGNOSTICS
LX
B146C-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
LX
AUDIO - ELECTRICAL DIAGNOSTICS
8A - 39
•
When Monitored:
•
With the ignition on.
•
Set Condition:
•
The Amplifier detects a short to battery condition on the output circuit.
Possible Causes
(X201) AMPLIFIED LEFT FRONT DOOR SPEAKER (+) CIRCUIT SHORT TO VOLTAGE
(X291) AMPLIFIED LEFT FRONT DOOR SPEAKER (-) CIRCUIT SHORT TO VOLTAGE
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: B146C-CHANNEL 3 AUDIO SPEAKER OUTPUT 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/sche-
matic as a guide, inspect the wiring and connectors.
Perform BODY VERIFICATION TEST VER-1.
2.
CHECK FOR VOLTAGE ON THE (X201) AMPLIFIED LEFT FRONT DOOR SPEAKER (+) CIRCUIT
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Disconnect the Amplified Left Front Door Speaker harness connector.
Turn the ignition on.
Measure for voltage on the (X201) Amplified Left Front Door Speaker (+) circuit.
Is the voltage above 10.0 volts?
Yes
>> Repair the (X201) Amplified Left Front Door Speaker (+) circuit for a short to voltage.
Perform BODY VERIFICATION TEST VER-1.
No
>> Go To 3
3.
CHECK FOR VOLTAGE ON THE (X291) AMPLIFIED LEFT FRONT DOOR SPEAKER (-) CIRCUIT
Measure for voltage on the (X291) Amplified Left Front Door Speaker (-) circuit.
Is the voltage above 10.0 volts?
Yes
>> Repair the (X291) Amplified Left Front Door Speaker (-) circuit for a short to voltage.
Perform BODY VERIFICATION TEST VER-1.
No
>> Replace the Amplifier in accordance with the service information.
Perform BODY VERIFICATION TEST VER-1.
8A - 40
AUDIO - ELECTRICAL DIAGNOSTICS
LX
B146D-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT OPEN
For a complete wiring diagram Refer to Section 8W.
LX
AUDIO - ELECTRICAL DIAGNOSTICS
8A - 41
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