Dodge Ram Truck 1500-2500-3500. Manual — part 275
CHANNEL X OPEN (CONTINUED)
3.
SPEAKER
Measure the resistance of the Speaker between the Channel XX (-) circuit terminal and the Channel XX (+) circuit
terminal at the Speaker.
Is the resistance below 1.0 ohm?
Yes
>> Replace the Speaker per Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Replace the Amplifier per Service Information.
Perform BODY VERIFICATION TEST - VER 1.
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AUDIO - SRT10 - AMP - ELECTRICAL DIAGNOSTICS
DR/DH
CHANNEL X SHORT TOGETHER
For the Audio Amplifier system circuit diagram (Refer to 8 - ELECTRICAL/AUDIO - SCHEMATICS AND DIA-
GRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on and radio volume at 25 or higher.
•
Set Condition:
The amplifier detects that the output circuits are shorted together.
Possible Causes
CHANNEL X (-) CIRCUIT SHORTED TO CHANNEL X (+) CIRCUIT
SPEAKER
AMPLIFIER
1.
INTERMITTENT CONDITION
NOTE: NOTE: This is a generic test for all Speakers Channel 1 thru Channel 8. Use the following diagnos-
tics for the specific speaker that set the DTC. Use the 8W wiring diagrams for circuit ID’s and wiring repairs.
Turn the ignition on.
Turn the ignition off.
Turn the ignition on.
With the DRBIII
T
, read Amplifier DTCs.
Is the Channel X Shorted Together DTC active?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not present at this time. Use the wiring diagrams/sche-
matics as a guide to locate and inspect the related wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2.
CHANNEL X (-) CIRCUIT SHORTED TO CHANNEL X (+) CIRCUIT
Turn the ignition off.
Disconnect the Amplifier harness connectors.
Disconnect the appropriate Speaker harness connector.
Measure the resistance between the Channel X (-) circuit and the Channel X (+) circuit at the Speaker harness
connector.
Is the resistance below 5.0 ohms?
Yes
>> Go To 3
No
>> Repair the short between the Channel X (-) circuit and the Channel X (+) circuit.
Perform BODY VERIFICATION TEST - VER 1.
DR/DH
AUDIO - SRT10 - AMP - ELECTRICAL DIAGNOSTICS
8A - 103
CHANNEL X SHORT TOGETHER (CONTINUED)
3.
SPEAKER
Measure the resistance of the Speaker between the Channel XX (-) circuit terminal and the Channel XX (+) circuit
terminal at the Speaker.
Is the resistance below 1.0 ohm?
Yes
>> Replace the Speaker per Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Replace the Amplifier per Service Information.
Perform BODY VERIFICATION TEST - VER 1.
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AUDIO - SRT10 - AMP - ELECTRICAL DIAGNOSTICS
DR/DH
CABIN EQ MISMATCH
For the Audio Amplifier system circuit diagram (Refer to 8 - ELECTRICAL/AUDIO - SCHEMATICS AND DIA-
GRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
If the cabin EQ message is incompatible with the EQ’s stored in the amplifier for 10 consecutive cycles, then
the amplifier will set this DTC.
Possible Causes
CHECK AMPLIFIER BUSSED INPUTS AND OUTPUTS
FCM ACTIVE ON THE BUS CIRCUIT
ACTIVE DTCS STORED IN THE FCM
FRONT CONTROL MODULE
1.
INTERMITTENT CONDITION
Turn the ignition on.
Turn the radio on.
With the DRBIII
T
, erase Amplifier DTCs.
With the DRBIII
T
, reset the Amplifier.
With the DRBIII
T
, read Amplifier DTCs.
Is the DTC active at this time?
Yes
>> Go To 2
No
>> The conditions that caused this code to
set are not present at this time. Use the
wiring diagrams/schematics as a guide
to locate and inspect the related wiring
and connectors.
Perform BODY VERIFICATION TEST -
VER 1.
2.
CHECK AMPLIFIER BUSSED INPUTS AND OUTPUTS
With the DRBIII
T
, in Amplifier Data Display, read the Cabin EQ# settings in the Bussed Inputs and Bussed Outputs
Sections.
NOTE: NOTE: The Cabin EQ# settings in the Inputs/Outputs sections should match one another. The Cabin
EQ# in the Inputs section is the information that is received from the FCM. The Cabin EQ# in the Outputs
section, is the information stored in the Amp Memory.
Dos the Cabin EQ# settings match one another?
Yes
>> Replace the Amplifier per Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 3
DR/DH
AUDIO - SRT10 - AMP - ELECTRICAL DIAGNOSTICS
8A - 105
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