B1487

B1487-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER





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

- When Monitored:
With the ignition on. Radio volume at 25 or higher.

- Set Condition:
The Amplifier detects that the output circuits are shorted together.





1. CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on, engine not running.
2. With the scan tool, erase the DTCs.
3. Turn the radio on.
4. Turn the volume level to 25.
5. Adjust the speakers to the front and center.
6. With the scan tool, read the active DTCs.

Does the scan tool display: B1487-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER?

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 CENTER INSTRUMENT PANEL (I/P) SPEAKER




1. Turn the ignition off.
2. Disconnect the Center Instrument Panel Speaker harness connector.
3. Measure the resistance between the Amplified Center I/P Speaker (+) and (-) component terminals.

NOTE: The graphic shows the connector for reference only. Measure between the speaker terminals.

Is the resistance of the speaker below 1 Ohm?

Yes

- Replace the Center Instrument Panel Speaker.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE (X200) AMPLIFIED CENTER (I/P) SPEAKER (+) CIRCUIT FOR A SHORT TO THE (X290) AMPLIFIED CENTER (I/P) SPEAKER (-) CIRCUIT




1. Disconnect the Amplifier C1 harness connector.
2. Measure the resistance between the (X200) Amplified Center I/P Speaker (+) circuit and the (X290) Amplified Center I/P Speaker (-) circuit.

Is the resistance below 10K Ohms?

Yes

- Repair the (X200) Amplified Center I/P Speaker (+) circuit for a short to the (X290) Amplified Center I/P Speaker (-) circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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