Jeep Grand Cherokee WK. Manual - part 239
B146B-CHANNEL 3 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
(X201) AMPLIFIED LEFT FRONT DOOR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X291) AMPLIFIED LEFT FRONT DOOR SPEAKER (-) CIRCUIT SHORTED TO GROUND
LEFT FRONT 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: B146B-CHANNEL 3 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 (X201) AMPLIFIED LEFT FRONT DOOR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND
Disconnect the Amplifier C1 harness connector.
Measure the resistance between ground and the (X201) Amplified Left
Front Door Speaker (+) circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (X201) Amplified Left Front Door Speaker (+)
circuit for a short to ground.
Perform BODY VERIFICATION TEST VER-1.
No
>> Go To 3
8A - 92
AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS
WK