Dodge Durango (HB). Manual — part 178
B1484-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT LOW
HB
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
8A - 153
B1484-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT LOW (CONTINUED)
For the Amplifier circuit diagram (Refer to 8 - ELECTRICAL/AUDIO - SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The Amplifier detects a shorted to ground condition on the speaker output circuit.
Possible Causes
(X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT SHORTED TO GROUND
(X391) AMPLIFIED SUBWOOFER 2 (-) CIRCUIT SHORTED TO GROUND
SUBWOOFER
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: B1484-CHANNEL 8 AUDIO
SPEAKER OUTPUT CIRCUIT LOW?
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.
CHECK THE (X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT FOR A SHORT TO GROUND
Disconnect the Amplifier C1 harness connector.
Measure the resistance between ground and the (X301) Amplified
Subwoofer 2 (+) circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (X301) Amplified Subwoofer 2 (+) circuit for a
short to ground.
Perform BODY VERIFICATION TEST VER-1.
No
>> Go To 3
8A - 154
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
HB
B1484-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT LOW (CONTINUED)
3.
CHECK THE (X391) AMPLIFIED SUBWOOFER 2 (-) CIRCUIT FOR A SHORT TO GROUND
Measure the resistance between ground and the (X391) Amplified
Subwoofer 2 (-) circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (X391) Amplified Subwoofer 2 (-) for a short to
ground.
Perform BODY VERIFICATION TEST VER-1.
No
>> Go To 4
4.
CHECK OPERATION OF THE AMPLIFIED SUBWOOFER
Turn the ignition off.
Reconnect the Subwoofer harness connector.
Measure the resistance of the speaker circuit between the Amplifier C1
harness connector and ground..
Is the resistance below 10K ohms?
Yes
>> Replace the Subwoofer in accordance with the service
information.
Perform BODY VERIFICATION TEST VER-1.
No
>> Replace the Amplifier in accordance with the service infor-
mation.
Perform BODY VERIFICATION TEST VER-1.
HB
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
8A - 155
B1485-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT HIGH
8A - 156
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
HB
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