Dodge Durango (HB). Manual — part 176
B1480-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT HIGH (CONTINUED)
3.
CHECK FOR VOLTAGE ON THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT
Measure for voltage on the (X390) Amplified Subwoofer 1 (-) circuit.
Is the voltage above 10.0 volts?
Yes
>> Repair the (X390) Amplified Subwoofer 1 (-) circuit for a
short to voltage.
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 - 145
B1481-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT OPEN
8A - 146
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
HB
B1481-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT OPEN (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:
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/schematic
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 Amplified 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
HB
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
8A - 147
B1481-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT OPEN (CONTINUED)
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 Sub-
woofer 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.
4.
CHECK THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT FOR AN OPEN
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Measure the resistance of the (X390) Amplified Subwoofer 1 (-) circuit
between the Amplifier C1 harness connector and the Amplified Sub-
woofer harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Replace the Amplifier in accordance with the service infor-
mation.
Perform BODY VERIFICATION TEST VER-1.
No
>> Repair the (X390) Amplified Subwoofer 1 (-) circuit for an
open.
Perform BODY VERIFICATION TEST VER-1.
8A - 148
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
HB
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