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B14C8-13-CHANNEL 12 AUDIO SPEAKER OUTPUT - CIRCUIT OPEN - PREMIUM





For a complete wiring diagram, refer to the Wiring Information.

NOTE: There are two versions of the B14C8-13 DTC test. In order to select the proper test you must know if the vehicle is equipped with the Beats by Dr Dre Audio sound system. If the vehicle is equipped with the BEATS system use the B14C8-13-BEATS test. If the vehicle is not equipped with the BEATS system use the B14C8-13-PREMIUM test.

Theory of Operation

The (X301) Subwoofer 2 (+) circuit and the (X391) Subwoofer 2 (-) circuit are outputs of the Amplifier. The Amplifier controls and monitors these circuits for a concern.

For a detailed description of the Audio System. Audio And Video - Description.

For additional information regarding the operation of the Audio System. Audio And Video - Operation.

- When Monitored:
When the ignition is cycled on.

- Set Condition:
The Amplifier detects an open condition on the speaker output circuit when the ignition is cycled on.





1. CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on and open one of the front doors.

NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs.

2. With the scan tool, record and erase the Amplifier DTCs.
3. Cycle the ignition switch from on to off, wait five seconds and then back to on.
4. Turn the Radio.
5. Adjust the speakers to the rear and center.
6. With the scan tool, read the active Amplifier DTCs.

Does the scan tool display active: B14C8-13-CHANNEL 12 AUDIO SPEAKER OUTPUT - CIRCUIT OPEN?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE OPERATION OF THE SUBWOOFER SPEAKER




1. Turn the ignition off.
2. Disconnect the Subwoofer Speaker harness connector.
3. Turn the ignition on.
4. Turn the Radio on and turn the volume to 25.
5. Adjust the speakers to the rear and center.
6. With a voltmeter set to read in A/C voltage, measure the voltage of the Subwoofer Speaker circuits in the Subwoofer Speaker harness connector.

Is the voltage present greater than 1 volt?

Yes

- Replace the Subwoofer Speaker. Speaker - Removal
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE (X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT FOR AN OPEN




1. Turn the ignition off.
2. Disconnect the Amplifier C2 harness connector.
3. Measure the resistance of the (X301) Amplified Subwoofer 2 (+) circuit between the Amplifier C1 harness connector and the Subwoofer Speaker harness connector.

Is the resistance below 2.5 Ohms?

Yes

- Go To 4

No

- Repair the (X301) Amplified Subwoofer 2 (+) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE (X391) AMPLIFIED SUBWOOFER 2 (-) CIRCUIT FOR AN OPEN




1. Measure the resistance of the (X391) Amplified Subwoofer 2 (-) circuit between the Amplifier C1 harness connector and the Subwoofer Speaker harness connector.

Is the resistance below 2.5 Ohms?

Yes

- Replace the Amplifier. Amplifier - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the (X391) Amplified Subwoofer 2 (-) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.