Operation CHARM: Car repair manuals for everyone.

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