B1486

B1486-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT OPEN





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

- When Monitored:
Amplifier BUS wake-up. Amplifier reset with scan tool.

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





1. CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on, not running.
2. Turn the radio on.
3. With the scan tool, erase the DTCs.
4. With the scan tool, reset the Amplifier.
5. With the scan tool, read the active DTCs.

Does the scan tool display: B1486-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

- Go To 2

No

- 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.
- 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. Turn the ignition on.
4. Turn the radio on and turn the volume to 25.
5. Adjust the speakers to front and center.
6. With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Center (I/P) Speaker circuits in the Center Instrument Panel Speaker harness connector.

Is the voltage above 1 volt?

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 AN OPEN




1. Turn the ignition off.
2. Disconnect the Amplifier C1 harness connector.
3. Measure the resistance of the (X200) Amplified Center (I/P) Speaker (+) circuit between the Amplifier C1 harness connector and the Center Instrument Panel Speaker harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 4

No

- Repair the (X200) Amplified Center (I/P) Speaker (+) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE (X290) AMPLIFIED CENTER (I/P) SPEAKER (-) CIRCUIT FOR AN OPEN




1. Measure the resistance of the (X290) Amplified Center (I/P) Speaker (-) circuit between the Amplifier C1 harness connector and the Center Instrument Panel Speaker harness connector.

Is the resistance below 5.0 Ohms?

Yes

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

No

- Repair the (X290) Amplified Center (I/P) Speaker (-) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.