B1464

B1464 - Channel 1 Audio Speaker Output Circuits Short Together






For a complete wiring diagram.

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

• Set Condition: The amplifier detects that the output circuits are shorted together.






Test Step 1 - Check for an Intermittent Condition

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

• With the scan tool, erase any amplifier DTCs.

• Turn the radio ON.

• Turn the volume level to 25.

• Check for amplifier DTCs.

Does the scan tool display B1464 - Channel 1 Audio Speaker Output Circuit Short Together?

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 the Operation of the Amplified Left I/P Speaker

• Disconnect the amplified left I/P speaker.

• Measure the resistance of the speaker between the two terminals.

Is the resistance of the speaker less than 1 ohm?

Yes

• Replace the speaker.

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

No

• Go to Test Step 3.

Test Step 3 - Check the Amplified Left I/P Speaker (+) and (-) Circuits for a Short Together






• Turn the ignition OFF.

• Disconnect the amplifier C2 harness connector.

• Measure the resistance between the (+) circuit and the (-) circuit.

Is the resistance less than 10K ohms?

Yes

• Repair the circuits for a short together.

• 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