Jeep Grand Cherokee WK. Manual — part 245
B1474-CHANNEL 5 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 matu-
rity 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: B1474-CHANNEL 5 AUDIO
SPEAKER OUTPUT CIRCUIT PERFORMANCE?
Yes
>> Replace the Amplifier in accordance with the service infor-
mation.
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/schematic
as a guide, inspect the wiring and connectors.
Perform BODY VERIFICATION TEST VER-1.
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AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
WK
B1475-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT LOW
WK
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
8A - 117
B1475-CHANNEL 5 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
(X205) AMPLIFIED LEFT REAR DOOR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X295) AMPLIFIED LEFT REAR DOOR SPEAKER (-) CIRCUIT SHORTED TO GROUND
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, read Amplifier DTCs.
Does the scan tool display active: B1475-CHANNEL 5 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 (X205) AMPLIFIED LEFT REAR DOOR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND
Disconnect the Amplifier C1 harness connector.
Measure the resistance between ground and the (X205) Amplified Left
Rear Door Speaker (+) circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (X205) Amplified Left Rear Door Speaker (+)
circuit for a short to ground.
Perform BODY VERIFICATION TEST VER-1.
No
>> Go To 3
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AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
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B1475-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT LOW (CONTINUED)
3.
CHECK THE (X295) AMPLIFIED LEFT REAR DOOR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND
Measure the resistance between ground and the (X295) Amplified Left
Rear Door Speaker (-) circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (X295) Amplified Left Rear Door Speaker (-) for
a short to ground.
Perform BODY VERIFICATION TEST VER-1.
No
>> Go To 4
4.
CHECK OPERATION OF THE AMPLIFIED LEFT REAR DOOR SPEAKER
Turn the ignition off.
Reconnect and reinstall the Left Rear 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 Rear Door Speaker 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.
WK
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
8A - 119
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