Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJEEP2007GRAND CHEROKEE 2WD V6-3.7L VIN KREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONB CODE CHARTSB1476
2007 Jeep Grand Cherokee 2WD V6-3.7L VIN K
B1476
2007 Jeep Grand Cherokee 2WD V6-3.7L VIN KSECTION B1476
B1476-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT HIGH
For a complete wiring diagram refer to Diagrams/Electrical.
- When Monitored:
- With the ignition on.
- Set Condition:
- The Amplifier detects a short to battery condition on the output circuit.
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.
Does the scan tool display active: B1476-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT HIGH?
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. Body Verification Test
2. CHECK FOR VOLTAGE ON THE (X205) AMPLIFIED LEFT REAR DOOR SPEAKER (+) CIRCUIT
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Disconnect the Amplified Left Rear Door Speaker harness connector.
Turn the ignition on.
Measure for voltage on the (X205) Amplified Left Rear Door Speaker (+) circuit.
Is the voltage above 10.0 volts?
Yes
- Repair the (X205) Amplified Left Rear Door Speaker (+) circuit for a short to voltage.
- Perform BODY VERIFICATION TEST VER-1. Body Verification Test
No
- Go To 3
3. CHECK FOR VOLTAGE ON THE (X295) AMPLIFIED LEFT REAR DOOR SPEAKER (-) CIRCUIT
Measure for voltage on the (X295) Amplified Left Rear Door Speaker (-) circuit.
Is the voltage above 10.0 volts?
Yes
- Repair the (X295) Amplified Left Rear Door Speaker (-) circuit for a short to voltage.
- Perform BODY VERIFICATION TEST VER-1. Body Verification Test
No
- Replace the Amplifier.
- Perform BODY VERIFICATION TEST VER-1. Body Verification Test
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.