Dodge Nitro. Manual — part 286

Repair the (X299) Amplified Left Front Speaker (-) circuit for an open.

Perform BODY VERIFICATION TEST - VER 1 .

B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Audio/Video Systems - Electrical Diagnostics - Nitro

Fig. 73: Channel 3 Audio Speaker Output Circuit Schematic
Courtesy of CHRYSLER LLC

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

When Monitored:

With the ignition on. Radio volume at 25 or higher.

Set Condition:

The amplifier detects that the output circuits are shorted together.

Diagnostic Test

1) CHECK FOR AN INTERMITTENT CONDITION

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

With the scan tool, erase Amplifier DTCs.

Turn the radio on.

Turn the volume level to 25.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT
SHORTED TOGETHER?

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 BODY VERIFICATION TEST - VER 1 .

2) CHECK THE OPERATION OF THE AMPLIFIED LEFT FRONT SPEAKER

Possible Causes

(X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT SHORTED TO THE (X299)
AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT
AMPLIFIED LEFT FRONT SPEAKER
AMPLIFIER

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Audio/Video Systems - Electrical Diagnostics - Nitro

Turn the ignition off.

Disconnect the Amplified Left Front Speaker.

Measure the resistance of the speaker between the two terminals.

Is the resistance of the speaker less than 1 ohm?

Yes

Replace the Amplified Left Front Speaker in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

No

Go to 3).

3) CHECK THE (X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT, AND THE (X299)
AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Audio/Video Systems - Electrical Diagnostics - Nitro

Fig. 74: Measuring Resistance Between (X209) Amplified Left Front Speaker (+) Circuit And
(X299) Amplified Left Front Speaker (-) Circuit
Courtesy of CHRYSLER LLC

Disconnect the Amplifier C1 harness connector.

Measure the resistance between the (X209) Amplified Left Front Speaker (+) circuit, and the (X299)
Amplified Left Front Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X209) Amplified Left Front Speaker (+) circuit, and the (X299) Amplified Left Front
Speaker (-) circuit for a short together.

Perform BODY VERIFICATION TEST - VER 1 .

No

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B146F-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

When Monitored:

With the ignition on.

Set Condition:

This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a
maturity rate of 5 ±1 sec.

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: B146F-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT
PERFORMANCE?

Possible Causes

AMPLIFIER

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Audio/Video Systems - Electrical Diagnostics - Nitro