FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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B140A







B140A-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH





For a complete wiring diagram Consult Diagrams/Electrical.





Diagnostic Test

1. INTERMITTENT CONDITION
Turn the ignition on, then off, and then on again.
With the scan tool, read Radio DTCs.
Does the scan tool display active: B140A-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

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. Body Verification Test

2. (X303) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE




Turn the ignition off.
Disconnect the Radio harness connector.
Disconnect the Left Rear Audio Speaker harness connector.
Turn the ignition on.
Measure for voltage on the (X303) Left Rear Speaker (+) circuit.
Is the voltage above 10.0 volts?

Yes

- Repair the (X303) Left Rear Speaker (+) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go to 3

3. (X393) LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE




Measure for voltage on the (X393) Left Rear Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

- Repair the (X393) Left Rear Speaker (-) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the Radio.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test