B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN
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For a complete wiring diagram, refer to the Wiring Information.
Theory of Operation
The (X201) Left Front Speaker (+) circuit and the (X291) Left Front Speaker (-) circuit are outputs of the Radio. The Radio controls and monitors these circuits for a concern.
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When Monitored:
With the Radio on.
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Set Condition:
The Radio detects an open condition on the speaker output circuit.
Possible Causes |
|---|
| (X201) LEFT FRONT SPEAKER (+) CIRCUIT OPEN |
| (X291) LEFT FRONT SPEAKER (-) CIRCUIT OPEN |
| LEFT FRONT SPEAKER |
| RADIO |
1. CHECK FOR AN INTERMITTENT CONDITION
| NOTE: | This vehicle has a Front Tweeter wired in parallel with the Front Speaker. |
| 1. | Turn the ignition on and open one of the front doors. |
| NOTE: | A front door must remain open whenever checking or erasing Radio DTCs. |
| 2. | Using the scan tool, record and erase the Radio DTCs. |
| 3. | Turn the Radio on. |
| 4. | Adjust the speakers to the front and center. |
| 5. | Using the scan tool, read the active Radio DTCs. |
Does the scan tool read: B1403-FRONT LEFT 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. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).
2. CHECK THE LEFT FRONT SPEAKER
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| 1. | Turn the ignition off. |
| 2. | Disconnect the Left Front Speaker. |
| 3. | Measure the resistance of the speaker between the two terminals. |
| NOTE: | The graphic shows the connector for reference only. Measure between the speaker terminals. |
Is the resistance above 5.0 Ohms?
Yes
- Replace the Left Front Speaker in accordance with the Service Information. An open Tweeter will not set this code.
- Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).
No
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Go To 3
3. CHECK THE (X201) LEFT FRONT SPEAKER (+) CIRCUIT FOR AN OPEN
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| 1. | Disconnect the Radio C2 harness connector. |
| 2. | Measure the resistance of the (X201) Left Front Speaker (+) circuit between the Radio C2 connector, and the Left Front Speaker harness connector. |
Is the resistance below 5.0 Ohms?
Yes
- Go To 4
No
- Repair an open in the (X201) Left Front Speaker (+) circuit.
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Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM)
- Standard Procedure).
4. CHECK THE (X291) LEFT FRONT SPEAKER (-) CIRCUIT FOR AN OPEN
 |
| 1. | Measure the resistance of the (X291) Left Front Speaker (-) circuit between the Radio C2 connector, and the Left Front Speaker harness connector. |
Is the resistance below 5.0 Ohms?
Yes
- Replace the Radio in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).
No
- Repair an open in the (X291) Left Front Speaker (-) circuit.
-
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM)
- Standard Procedure).