B1464

B1464-CHANNEL 1 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.
2. With the scan tool, record and erase the Amplifier 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 Amplifier DTCs.

Does the scan tool display active: B1464-CHANNEL 1 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 LEFT INSTRUMENT PANEL SPEAKER




1. Turn the ignition off.
2. Disconnect the Left Instrument Panel Speaker harness connector.
3. Measure the resistance of the speaker between the two terminals.

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

Is the resistance of the speaker less than 1 Ohm?

Yes

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

No

- Go To 3

3. CHECK THE (X209) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT, AND THE (X299) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER




1. Disconnect the Amplifier C1 harness connector.
2. Measure the resistance between the (X209) Amplified Left I/P Speaker (+) circuit and the (X299) Amplified Left I/P Speaker (-) circuit.

Is the resistance below 10k Ohms?

Yes

- Repair the (X209) Amplified Left I/P Speaker (+) circuit for a short to the (X299) Amplified Left I/P Speaker (-) circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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