B147B

B147B - Channel 6 Audio Speaker Output Circuit High






For a complete wiring diagram, refer to.

• When Monitored: With the ignition on.

• Set Condition: The amplifier detects a short to battery condition on the output circuit.






Test Step 1 - Check for an Intermittent Condition

• Turn the ignition ON, then OFF, and then ON again.

• With the scan tool, check for amplifier DTCs.

Does the scan tool display B147B - Channel 6 Audio Speaker Output Circuit High?

Yes

• Go to Test Step 2.

No

• The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 2 - Check for Voltage on the RR Door Speaker (+) Circuit

• Turn the ignition OFF.

• Disconnect the amplifier C1 harness connector.

• Disconnect the speaker harness connector.

• Turn the ignition ON.

• Measure for voltage on the speaker (+) circuit.

Is the voltage more than 10.0 volts?

Yes

• Repair the short to voltage in the speaker (+) circuit.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Go to Test Step 3.

Test Step 3 - Check for Voltage on the RR Door Speaker (-) Circuit

• Measure for voltage on the speaker (-) circuit.

Is the voltage more than 10.0 volts?

Yes

• Repair the speaker (-) circuit for a short to voltage.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Replace the amplifier.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior