Diagnostic Test

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

1) CHECK FOR AN INTERMITTENT CONDITION

Fig 1: Scan Tool - Starscan
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B147A-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes
1. Go To step 2).
No
1. 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.
2. Perform BODY VERIFICATION TEST - VER 1 .
2) CHECK THE (X206) AMPLIFIED RIGHT REAR DOOR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND

Fig 2: Amplified Right Rear Door Speaker (+) Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Disconnect the Amplifier C1 harness connector.

Measure the resistance between ground and the (X206) Amplified Right Rear Door Speaker (+) circuit.

Is the resistance below 10K ohms?

Yes
1. Repair the (X206) Amplified Right Rear Door Speaker (+) circuit for a short to ground.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Go To step 3).
3) CHECK THE (X296) AMPLIFIED RIGHT REAR DOOR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND

Fig 3: Amplified Right Rear Door Speaker (-) Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Measure the resistance between ground and the (X296) Amplified Right Rear Door Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes
1. Repair the (X296) Amplified Right Rear Door Speaker (-) for a short to ground.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Go To step 4).
4) CHECK OPERATION OF THE AMPLIFIED RIGHT REAR DOOR SPEAKER

Fig 4: Amplified Right Rear Door Speaker
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Reconnect and reinstall the Right Rear Door Speaker.

Measure the resistance of the speaker circuit between the Amplifier C1 harness connector and ground.

Is the resistance below 10K ohms?

Yes
1. Replace the Right Rear Door Speaker in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Replace the Amplifier in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .