B1470-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT LOW





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:
  • With the ignition on.
  • Set Condition:
  • The Amplifier detects a shorted to ground condition on the speaker output circuit.

Possible Causes
 
(X202) AMPLIFIED RIGHT FRONT DOOR SPEAKER (+) CIRCUIT SHORTED TO GROUND
 
(X292) AMPLIFIED RIGHT FRONT DOOR SPEAKER (-) CIRCUIT SHORTED TO GROUND
 
RIGHT FRONT DOOR SPEAKER
 
AMPLIFIER
 




Diagnostic Test

1.CHECK FOR AN INTERMITTENT CONDITION




Does the scan tool display active: B1470-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

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 (X202) AMPLIFIED RIGHT FRONT DOOR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND






Is the resistance below 10K ohms?

Yes
  • Repair the (X202) Amplified Left Front Door Speaker (+) circuit for a short to ground.
  • Perform BODY VERIFICATION TEST VER-1.


No
  • Go To 3

3.CHECK THE (X292) AMPLIFIED RIGHT FRONT DOOR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND





Is the resistance below 10K ohms?

Yes
  • Repair the (X292) Amplified Right Front Door Speaker (-) for a short to ground.
  • Perform BODY VERIFICATION TEST VER-1.


No
  • Go To 4

4.CHECK OPERATION OF THE AMPLIFIED RIGHT FRONT DOOR SPEAKER







Is the resistance below 10K ohms?

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


No
  • Replace the Amplifier in accordance with the service information.
  • Perform BODY VERIFICATION TEST VER-1.