B1477-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT OPEN
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
- Amplifier BUS wake-up. Amplifier reset with scan tool.
- Set Condition:
- The amplifier detects an open condition on the speaker output circuit.
| Possible Causes |
| (X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT OPEN |
| (X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT OPEN |
| LEFT REAR SPEAKER |
| AMPLIFIER |
Diagnostic Test
1. CHECK FOR AN INTERMITTENT CONDITIONTurn the ignition on.
Turn the radio on.
With the scan tool, erase Amplifier DTCs.
With the scan tool, reset the amplifier.
With the scan tool, read Amplifier DTCs.
Does the scan tool display active: B1477-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT OPEN?
Yes
- Go To 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 BODY VERIFICATION TEST VER-1.
2. CHECK THE OPERATION OF THE LEFT REAR SPEAKER
Disconnect the Left Rear Speaker harness connector.
Turn the radio on and turn the volume to mid level.
With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Left Rear Speaker circuits in the Amplified Left Rear Speaker harness connector.
Is the voltage present greater than 1 volt?
Yes
- Replace the Amplified Left Rear Speaker in accordance with the service information.
- Perform BODY VERIFICATION TEST VER-1.
No
- Go To 3
3. CHECK THE (X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT FOR AN OPEN
Turn the ignition off.
Disconnect the Amplifier C2 harness connector.
Measure the resistance of the (X205) Amplified Left Rear Speaker (+) circuit between the Amplifier C2 harness connector and the Amplified Left Rear Speaker harness connector.
Is the resistance below 5.0 ohms?
Yes
- Go To 4
No
- Repair the (X205) Amplified Left Rear Speaker (+) circuit for an open.
- Perform BODY VERIFICATION TEST VER-1.
4. CHECK THE (X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT FOR AN OPEN
Turn the ignition off.
Disconnect the Amplifier C2 harness connector.
Measure the resistance of the (X295) Amplified Left Rear Speaker (-) circuit between the Amplifier C2 harness connector and the Amplified Left Rear Speaker harness connector.
Is the resistance below 5.0 ohms?
Yes
- Replace the amplifier in accordance with the service information.
- Perform BODY VERIFICATION TEST VER-1.
No
- Repair the (X295) Amplified Left Rear Speaker (-) circuit for an open.
- Perform BODY VERIFICATION TEST VER-1.