B1472-CHANNEL 4 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
  
(X154) AMPLIFIED RIGHT FRONT DOOR SPEAKER (-) CIRCUIT OPEN
  
(X156) AMPLIFIED RIGHT FRONT DOOR SPEAKER (+) CIRCUIT OPEN
  
RIGHT FRONT DOOR SPEAKER
  
AMPLIFIER
  



Diagnostic Test

1.CHECK FOR AN INTERMITTENT CONDITION







Does the scan tool display active: B1472-CHANNEL 4 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 RIGHT FRONT DOOR SPEAKER







Is the voltage present greater than 1 volt?

Yes
  • Replace the Amplified Right Front Door Speaker in accordance with the service information.
  • Perform BODY VERIFICATION TEST VER-1.


No
  • Go To 3

3.CHECK THE (X154) AMPLIFIED RIGHT FRONT DOOR SPEAKER (-) CIRCUIT FOR AN OPEN







Is the resistance below 5.0 ohms?

Yes
  • Go To 4


No
  • Repair the (X154) Amplified Right Front Door Speaker (-) circuit for an open.
  • Perform BODY VERIFICATION TEST VER-1.

4.CHECK THE (X156) AMPLIFIED RIGHT FRONT DOOR SPEAKER (+) CIRCUIT FOR AN OPEN







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 (X156) Amplified Right Front Door Speaker (+) circuit for an open.
  • Perform BODY VERIFICATION TEST VER-1.