B1461
B1461-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT LOWB1461 - Channel 1 Audio Speaker Output Circuit Low:
WHEN MONITORED
With the ignition on.
SET CONDITION
The amplifier detects a shorted to ground condition on the speaker output circuit.
POSSIBLE CAUSES
- (X209) Amplified left front I/P speaker (+) circuit shorted to ground
- (X299) Amplified left front I/P speaker (-) circuit shorted to ground
- Left front I/P speaker
- Amplifier
Diagnostic Test
1. CHECK FOR AN INTERMITTENT CONDITION
Turn the ignition on, then off, and then on again.
With the scan tool, read Amplifier DTCs.
Q: Does the scan tool display active: B1461-CHANNEL 1 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 the BODY VERIFICATION TEST - VER 1. Body Verification Test
2. CHECK THE (X209) AMPLIFIED LEFT FRONT I/P SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND
Disconnect the Amplifier C1 harness connector.
Disconnect the Left I/P Speaker harness connector.
Measure the resistance between ground and the (X209) Amplified Left Front I/P Speaker (+) circuit.
Q: Is the resistance below 10K ohms?
YES: Repair the (X209) Amplified Left Front I/P Speaker (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3
3. CHECK THE (X299) AMPLIFIED LEFT FRONT I/P SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND
Measure the resistance between ground and the (X299) Amplified Left Front I/P Speaker (-) circuit.
Q: Is the resistance below 10K ohms?
YES: Repair the (X299) Amplified Left Front I/P Speaker (-) for a short to ground. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 4
4. CHECK OPERATION OF THE AMPLIFIED LEFT FRONT I/P SPEAKER
Turn the ignition off.
Reconnect and reinstall the Left Front I/P Speaker.
Measure the resistance of the speaker circuit between the Amplifier C1 harness connector and ground.
Q: Is the resistance below 10K ohms?
YES: Replace the Left Front I/P Speaker. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Amplifier. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test