B1475
B1475-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT LOWB1475 - Channel 5 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
- (X205) Amplified left rear shelf speaker (+) circuit shorted to ground
- (X295) Amplified left rear shelf speaker (-) circuit shorted to ground
- Left rear shelf 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: B1475-CHANNEL 5 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 (X205) AMPLIFIED LEFT REAR SHELF SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND
Disconnect the Amplifier C2 harness connector.
Disconnect the Left Rear Shelf Speaker harness connector.
Measure the resistance between ground and the (X205) Amplified Left Rear Shelf Speaker (+) circuit.
Q: Is the resistance below 10K ohms?
YES: Repair the (X205) Amplified Left Rear Shelf Speaker (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3
3. CHECK THE (X295) AMPLIFIED LEFT REAR SHELF SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND
Measure the resistance between ground and the (X295) Amplified Left Rear Shelf Speaker (-) circuit.
Q: Is the resistance below 10K ohms?
YES: Repair the (X295) Amplified Left Rear Shelf 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 REAR SHELF SPEAKER
Turn the ignition off.
Reconnect and reinstall the Left Rear Shelf Speaker.
Measure the resistance of the speaker circuit between the Amplifier C2 harness connector and ground.
Q: Is the resistance below 10K ohms?
YES: Replace the Left Rear Shelf 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