B146D-CHANNEL 3 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
  
(X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT OPEN
  
(X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT OPEN
  
AMPLIFIED LEFT FRONT SPEAKER
  
AMPLIFIER
  



Diagnostic Test

1.CHECK FOR AN INTERMITTENT CONDITION







Does the scan tool display active: B146D-CHANNEL 3 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 - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

2.CHECK THE OPERATION OF THE AMPLIFIED LEFT FRONT SPEAKER









Is the voltage present greater than 1 volt?

Yes


No
  • Go To 3

3.CHECK THE (X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT FOR AN OPEN







Is the resistance below 5.0 ohms?

Yes
  • Go To 4


No

4.CHECK THE (X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT FOR AN OPEN





Is the resistance below 5.0 ohms?

Yes


No