B1486

B1486-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT OPEN





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

- 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 and open one of the front doors.

NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs.

2. Using the scan tool, record and erase the Amplifier DTCs.
3. Cycle the ignition switch from on to off, wait five seconds and then back to on.
4. Turn the Radio on and set the volume to 25.
5. Adjust the speakers to the rear and center.
6. Using the scan tool, read the active Amplifier 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 AMPLIFIED LIFTGATE SPEAKER




1. Turn the ignition off.
2. Disconnect the Amplified Liftgate Speaker harness connector.
3. Turn the ignition on.
4. Turn the radio on and turn the volume to mid level.
5. With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Liftgate Speaker 2 circuits in the Amplified Liftgate Speaker harness connector.

Is the voltage above 1 volt?

Yes

- Replace the Amplified Liftgate Speaker.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE (X212) AMPLIFIED LIFTGATE SPEAKER 2 (+) CIRCUIT FOR AN OPEN




1. Turn the ignition off.
2. Disconnect the Amplifier C2 harness connector.
3. Measure the resistance of the (X212) Amplified Liftgate 2 (+) circuit between the Amplifier C2 harness connector and the Amplified Liftgate Speaker harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 4

No

- Repair the (X212) Amplified Liftgate 2 (+) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE (X282) AMPLIFIED LIFTGATE 2 (-) CIRCUIT FOR AN OPEN




1. Measure the resistance of the (X282) Amplified Liftgate 2 (-) circuit between the Amplifier C2 harness connector and the (X282) Amplified Liftgate 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 (X282) Amplified Liftgate 2 (-) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.