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Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
REAR CHANNELS SHORTED TOGETHER OR TO GROUND - DIAGNOSTIC PROCEDURE

TEST ACTION
1
NOTE: The fault condition must be present to continue diagnosis. Use the DRB III to perform the Amplifier Pre-test to verify the fault condition is present before continuing diagnosis.
Turn the ignition off.Disconnect the Right Rear Speaker harness connector.Turn the ignition on.Using the DRB III, perform the Amplifier Pre-test.Is the fault condition still present?
  1. Yes --> Go To 2
  2. No --> Replace the Right Rear Speaker in accordance with the service information.

    Perform BODY VERIFICATION TEST - VER 1  .
2 Turn the ignition off.
Disconnect the Left Rear Speaker harness connector.
Turn the ignition on.
Using the DRB III, perform the Amplifier Pre-test.
Is the fault condition still present?
  1. Yes --> Go To 3
  2. No --> Replace the Left Rear Speaker in accordance with the service information.

    Perform BODY VERIFICATION TEST - VER 1  .
3 Turn the ignition off.
Disconnect the Right Rear Speaker and the Left Rear Speaker harness connectors.
Disconnect the Amplifier C1 harness connector.
Measure the resistance between ground and each of the 4 Amplified Rear Speaker circuits.
Is the resistance above 1000 ohms for each of the measurements?
  1. Yes --> Go To 4
  2. No --> Repair the Amplified Rear Speaker circuit that measured below 1000 ohms for a short to ground.

    Perform BODY VERIFICATION TEST - VER 1  .
4 Turn the ignition off.
Disconnect the Right Rear Speaker and the Left Rear Speaker harness connectors.
Disconnect the Amplifier C1 harness connector.
At the Amplifier C1 harness connector, measure the resistance between the Amplified Left Rear Speaker (-) circuit and the following circuits: Amplified Left Rear Speaker (+), Amplified Right Rear Speaker (-) and Amplified Right Rear Speaker (+).
Is the resistance above 1000 ohms for each of the measurements?
  1. Yes --> Go To 5
  2. No --> Repair the Amplified Rear Speaker circuits that are shorted together.

    Perform BODY VERIFICATION TEST - VER 1  .
5 Turn the ignition off.
Disconnect the Right Rear Speaker and the Left Rear Speaker harness connectors.
Disconnect the Amplifier C1 harness connector.
At the Amplifier C1 harness connector, measure the resistance between the Amplified Left Rear Speaker (+) circuit and the following circuits: Amplified Right Rear Speaker (-) and Amplified Right Rear Speaker (+).
Is the resistance above 1000 ohms for each of the measurements?
  1. Yes --> Go To 6
  2. No --> Repair the Amplified Rear Speaker circuits that are shorted together.

    Perform BODY VERIFICATION TEST - VER 1  .
6 Turn the ignition off.
Disconnect the Right Rear Speaker and the Left Rear Speaker harness connectors.
Disconnect the Amplifier C1 harness connector.
At the Amplifier C1 harness connector, measure the resistance between the Amplified Right Rear Speaker (+) circuit and Amplified Right Rear Speaker (-) circuit.
Is the resistance above 1000 ohms?
  1. Yes --> Replace the Amplifier in accordance with the service information.

    Perform BODY VERIFICATION TEST - VER 1  .

  2. No --> Repair the Amplified Rear Speaker circuits that are shorted together.

    Perform BODY VERIFICATION TEST - VER 1  .
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