B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER
For a complete wiring diagram Refer to Section 8W.
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When Monitored:
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With the ignition on. Radio volume at 25 or higher.
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Set Condition:
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The amplifier detects that the output circuits are shorted together.
Possible Causes
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(X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT SHORTED TO THE (X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT
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AMPLIFIED LEFT FRONT SPEAKER
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AMPLIFIER
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Diagnostic Test
1.
CHECK FOR AN INTERMITTENT CONDITION
Turn the ignition on, then off, and then on again.
With the scan tool, erase Amplifier DTCs.
Turn the radio on.
Turn the volume level to 25.
With the scan tool, read Amplifier DTCs.
Does the scan tool display active: B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER?
Yes
No
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The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced,
pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
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Perform the BODY VERIFICATION TEST - VER 1.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
2.
CHECK THE OPERATION OF THE AMPLIFIED LEFT FRONT SPEAKER
Turn the ignition off.
Disconnect the Amplified Left Front Speaker.
Measure the resistance of the speaker between the two terminals.
Is the resistance of the speaker less than 1 ohm?
Yes
No
3.
CHECK THE (X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT, AND THE (X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER
Disconnect the Amplifier C1 harness connector.
Measure the resistance between the (X209) Amplified Left Front Speaker (+) circuit, and the (X299) Amplified Left Front Speaker (-) circuit.
Is the resistance below 10K ohms?
Yes
No