Jeep Grand Cherokee WK. Manual — part 243
B1471-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT HIGH (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 short to battery condition on the output circuit.
Possible Causes
(X202) AMPLIFIED RIGHT FRONT DOOR SPEAKER (+) CIRCUIT SHORT TO VOLTAGE
(X292) AMPLIFIED RIGHT 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: B1471-CHANNEL 4 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/schematic
as a guide, inspect the wiring and connectors.
Perform BODY VERIFICATION TEST VER-1.
2.
CHECK FOR VOLTAGE ON THE (X202) AMPLIFIED RIGHT FRONT DOOR SPEAKER (+) CIRCUIT
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Disconnect the Amplified Right Front Door Speaker harness connector.
Turn the ignition on.
Measure for voltage on the (X202) Amplified Right Front Door Speaker
(+) circuit.
Is the voltage above 10.0 volts?
Yes
>> Repair the (X202) Amplified Right Front Door Speaker (+)
circuit for a short to voltage.
Perform BODY VERIFICATION TEST VER-1.
No
>> Go To 3
8A - 108
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
WK
B1471-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT HIGH (CONTINUED)
3.
CHECK FOR VOLTAGE ON THE (X292) AMPLIFIED RIGHT FRONT DOOR SPEAKER (-) CIRCUIT
Measure for voltage on the (X292) Amplified Right Front Door Speaker
(-) circuit.
Is the voltage above 10.0 volts?
Yes
>> Repair the (X292) Amplified Right Front Door Speaker (-)
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.
WK
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
8A - 109
B1472-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT OPEN
8A - 110
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
WK
B1472-CHANNEL 4 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
(X202) AMPLIFIED RIGHT FRONT DOOR SPEAKER (+) CIRCUIT OPEN
(X292) AMPLIFIED RIGHT FRONT DOOR SPEAKER (-) CIRCUIT OPEN
RIGHT FRONT DOOR SPEAKER
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: B1472-CHANNEL 4 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 RIGHT FRONT DOOR SPEAKER
Disconnect the Right Front Door Speaker 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 Right Front Door Speaker circuits in the Amplified Right
Front Door Speaker harness connector.
Is the voltage present greater than 1 volt?
Yes
>> Replace the Amplified Right Front Door Speaker in accor-
dance with the service information.
Perform BODY VERIFICATION TEST VER-1.
No
>> Go To 3
WK
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
8A - 111
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