Dodge Nitro. Manual — part 282

Fig. 61: Measuring Resistance Between (X202) Amplified Right I/P Speaker (+) Circuit And (X292)
Amplified Right I/P Speaker (-) Circuit
Courtesy of CHRYSLER LLC

Disconnect the Amplifier C2 harness connector.

Measure the resistance between the (X202) Amplified Right I/P Speaker (+) circuit, and the (X292)
Amplified Right I/P Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X202) Amplified Right I/P Speaker (+) circuit, and the (X292) Amplified Right I/P
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 .

B146A-CHANNEL 3 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: B146A-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT
PERFORMANCE?

Possible Causes

AMPLIFIER

2007 Dodge Nitro R/T

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

Yes

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

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 .

B146B-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT LOW

2007 Dodge Nitro R/T

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

Fig. 62: Channel 3 Audio Speaker Output Circuit Schematic
Courtesy of CHRYSLER LLC

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

When Monitored:

2007 Dodge Nitro R/T

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

With the ignition on.

Set Condition:

The amplifier detects a shorted to ground condition on the speaker 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: B146B-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT
LOW?

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 (X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT FOR A SHORT
TO GROUND

Possible Causes

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

2007 Dodge Nitro R/T

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