B1477-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT OPENFor 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 OPENLEFT REAR SPEAKERAMPLIFIER
Diagnostic Test1.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?YesGo To 2NoThe 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 REAR SPEAKERTurn the ignition off.Disconnect the Left Rear Speaker harness connector.Turn the ignition on.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?YesReplace the Amplified Left Rear Speaker in accordance with the service information.Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)NoGo To 33.CHECK THE (X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT FOR AN OPENTurn 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?YesGo To 4NoRepair the (X205) Amplified Left Rear Speaker (+) circuit for an open.Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)4.CHECK THE (X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT FOR AN OPENMeasure 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?YesReplace the amplifier in accordance with the service information.Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)NoRepair the (X295) Amplified Left Rear Speaker (-) circuit for an open.Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)