DTC GRAND CARAVAN.pdf

DIAGNOSIS AND TESTING
B1401-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW
2012 Chrysler Town & Country Touring
2012 ACCESSORIES AND EQUIPMENT Audio (Radio) - Electrical Diagnostics - Grand Caravan, Town & Country
domingo, 11 de abril de 2021 00:04:00 Page 1 © 2011 Mitchell Repair Information Company, LLC.

Fig. 1: Front Left Audio Speaker Wiring Diagram
Courtesy of CHRYSLER GROUP, LLC
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
THEORY OF OPERATION
The (X201) Left Front Speaker (+) circuit and the (X291) Left Front Speaker (-) circuit are outputs of the
Radio. The Radio controls and monitors these circuits for a concern.
WHEN MONITORED:
With the Radio on.
SET CONDITION:
The Radio detects a short to ground condition on the speaker output circuit.
POSSIBLE CAUSES
DIAGNOSTIC TEST
1. CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on and open one of the front doors.
2. Using the scan tool, record and erase the Radio DTCs.
3. Turn the Radio on.
4. Adjust the speakers to the front and center.
5. Using the scan tool, read the active Radio DTCs.
Does the scan tool read: B1401-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW?
Possible Causes
(X201) LEFT FRONT SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X291) LEFT FRONT SPEAKER (-) CIRCUIT SHORTED TO GROUND
LEFT FRONT SPEAKER
LEFT FRONT INSTRUMENT PANEL (I/P) SPEAKER
RADIO
NOTE: This vehicle has a Front I/P Speaker wired in parallel with the Front Door
Speaker.
NOTE: A front door must remain open whenever checking or erasing Radio
DTCs.

Yes
l Go To 2.
No
l Test complete, the condition or conditions that originally set this DTC are not present at this
time. Using the wiring diagrams as a guide, check all related splices and connectors for signs
of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
l Refer to STANDARD PROCEDURE and perform the BODY VERIFICATION TEST.
2. CHECK THE LEFT FRONT SPEAKERS
1. Make sure one of the front doors is still open.
2. Using the scan tool, erase the DTCs.
3. Turn the ignition off.
4. Disconnect the Left Front Speaker harness connector from the Left Front Speaker.
5. Disconnect the Left Front I/P Speaker harness connector from the Left Front I/P Speaker.
6. Turn the ignition on.
7. Turn the radio on.
Yes
l Go To 4.
No
l Go To 3.
3. CHECK THE LEFT FRONT I/P SPEAKER
4. Re-connect the Left Front Speaker harness connector to the Left Front Speaker.
Yes
l Replace the Left Front Speaker in accordance with the Service Information.

No
l Replace the Left Front I/P Speaker in accordance with the Service Information.
4. CHECK THE (X201) LEFT FRONT SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND
Fig. 2: Checking Left Front Speaker (+) Circuit For A Short To Ground

2. Disconnect the Radio harness connector.
3. Measure the resistance between ground and the (X201) Left Front Speaker (+) circuit.
Is the resistance below 5.0 Ohms?
Yes
l Repair the (X201) Left Front Speaker (+) circuit for a short to ground.
No
l Go To 5.
5. CHECK THE (X291) LEFT FRONT SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND

Fig. 3: Checking Left Front Speaker (-) Circuit For A Short To Ground
1. Measure the resistance between ground and the (X291) Left Rear Speaker (-) circuit.
Yes
l Repair the (X291) Left Rear Speaker (-) circuit for a short to ground.

No
l Replace the Radio in accordance with the Service Information.
B1402-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
The Radio detects a short to battery condition on the speaker output circuit.
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool read: B1402-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?
Yes
Possible Causes
(X201) LEFT FRONT SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X291) LEFT FRONT SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
RADIO
Speaker.
DTCs.

l Go To 2.
No
2. CHECK FOR VOLTAGE ON THE (X201) LEFT FRONT SPEAKER (+) CIRCUIT

Fig. 5: Measuring Voltage Between Ground & Left Front Speaker (+) Circuit
3. Disconnect the Left Front Door Speaker harness connector.
4. Disconnect the Left Front I/P Speaker harness connector.
6. Measure the voltage between ground and the (X201) Left Front Speaker (+) circuit.
Is there any voltage present?
Yes
l Repair the (X201) Left Front Speaker (+) circuit for a short to voltage.
No
l Go To 3.
3. CHECK FOR VOLTAGE ON THE (X291) LEFT FRONT SPEAKER (-) CIRCUIT

Fig. 6: Measuring Voltage Between Ground & Left Front Speaker (-) Circuit
1. Measure the voltage between ground and the (X291) Left Front Speaker (-) circuit.
Yes
l Repair the (X291) Left Front Speaker (-) circuit for a short to voltage.

No
B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
The Radio detects an open condition on the speaker output circuit.
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool read: B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?
Possible Causes
(X201) LEFT FRONT SPEAKER (+) CIRCUIT OPEN
(X291) LEFT FRONT SPEAKER (-) CIRCUIT OPEN
LEFT FRONT SPEAKER
LEFT FRONT INSTRUMENT PANEL (I/P) SPEAKER
RADIO
Speaker.
DTCs.

Yes
l Go To 2.
No
2. CHECK THE LEFT FRONT SPEAKER
Fig. 8: Measuring Resistance Of Speaker Between Two Terminals
2. Disconnect the Left Front Speaker.

3. Measure the resistance of the speaker between the two terminals.
Is the resistance above 5.0 Ohms?
Yes
l Replace the Left Front Speaker in accordance with the Service Information.
No
l Go To 3.
3. CHECK THE LEFT FRONT I/P SPEAKER
NOTE: The graphic shows the connector for reference only. Measure
between the speaker terminals.

2. Disconnect the Left Front I/P Speaker.
Yes
l Replace the Left Front I/P Speaker in accordance with the Service Information.
No
l Go To 4.
4. CHECK THE (X201) LEFT FRONT SPEAKER (+) CIRCUIT FOR AN OPEN

Fig. 10: Checking Left Front Speaker (+) Circuit For An Open
3. Measure the resistance of the (X201) Left Front Speaker (+) circuit between the Radio connector,
and the Left Front Speaker harness connector and the Left Front I/P Speaker harness.
Yes

l Go To 5.
No
l Repair an open in the (X201) Left Front Speaker (+) circuit.
5. CHECK THE (X291) LEFT FRONT SPEAKER (-) CIRCUIT FOR AN OPEN
Fig. 11: Checking Left Front Speaker (-) Circuit For An Open

1. Measure the resistance of the (X291) Left Front Speaker (-) circuit between the Radio connector,
and the Left Front Speaker harness connector and the Left Front I/P Speaker harness.
Yes
No
l Repair an open in the (X291) Left Front Speaker (-) circuit.
B1405-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW

Fig. 12: Front Right Audio Speaker Wiring Diagram

THEORY OF OPERATION
The (X202) Right Front Speaker (+) circuit and the (X292) Right Front Speaker (-) circuit are outputs of the
WHEN MONITORED:
With the Radio on.
SET CONDITION:
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool read: B1405-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW?
Yes
l Go To 2.
Possible Causes
(X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT SHORTED TO GROUND
RIGHT FRONT SPEAKER
RIGHT FRONT INSTRUMENT PANEL (I/P) SPEAKER
RADIO
Speaker.
DTCs.

No
2. CHECK THE RIGHT FRONT SPEAKERS
4. Disconnect the Right Front Speaker harness connector from the Right Front Speaker.
5. Disconnect the Right Front I/P Speaker harness connector from the Right Front I/P Speaker.
Yes
l Go To 4.
No
l Go To 3.
3. CHECK THE RIGHT FRONT I/P SPEAKER
4. Re-connect the Right Front Speaker harness connector to the Right Front Speaker.
Yes
l Replace the Right Front Speaker in accordance with the Service Information.
No

l Replace the Right Front I/P Speaker in accordance with the Service Information.
4. CHECK THE (X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT FOR A SHORT TO
GROUND
Fig. 13: Checking Right Front Door Speaker (+) Circuit For A Short To Ground

3. Measure the resistance between ground and the (X202) Right Front Door Speaker (+) circuit
Yes
l Repair the (X202) Right Front Door Speaker (+) circuit for a short to ground.
No
l Go To 5.
5. CHECK THE (X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT FOR A SHORT TO
GROUND

Fig. 14: Checking Right Front Door Speaker (-) Circuit For A Short To Ground
1. Measure the resistance between ground and the (X292) Right Front Door Speaker (-) circuit.
Yes
l Repair the (X292) Right Front Door Speaker (-) circuit for a short to ground.

No
B1406-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool display active: B1406-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT
HIGH?
Yes
l Go To 2.
No
Possible Causes
(X202) RIGHT FRONT DOOR SPEAKER (+) SHORTED TO VOLTAGE
(X292) RIGHT FRONT DOOR SPEAKER (-) SHORTED TO VOLTAGE
RADIO
Speaker.
DTCs.

2. CHECK FOR VOLTAGE ON THE (X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT
Fig. 16: Measuring Voltage Between Ground & Right Front Door Speaker (+) Circuit

3. Disconnect the Right Front Door Speaker harness connector.
4. Disconnect the Right Front I/P Speaker harness connector.
6. Measure the voltage between ground and the (X202) Right Front Door Speaker (+) circuit.
Yes
l Repair the (X202) Right Front Door Speaker (+) circuit for a short to voltage.
No
l Go To 3.
3. CHECK FOR VOLTAGE ON THE (X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT

Fig. 17: Measuring Voltage Between Ground & Right Front Door Speaker (-) Circuit
1. Measure the voltage between ground and the (X292) Right Front Door Speaker (-) circuit.
Yes
l Repair the (X292) Right Front Door Speaker (-) circuit for a short to voltage.

No
B1407-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool read: B1407-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?
Yes
l Go To 2.
Possible Causes
(X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT OPEN
(X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT OPEN
RIGHT FRONT SPEAKER
RIGHT FRONT INSTRUMENT PANEL (I/P) SPEAKER
RADIO
Speaker.
DTCs.

No
2. CHECK THE RIGHT FRONT SPEAKER
2. Disconnect the Right Front Speaker.

Yes
l Replace the Right Front Speaker in accordance with the Service Information.
No
l Go To 3.
3. CHECK THE RIGHT FRONT I/P SPEAKER
2. Disconnect the Right Front I/P Speaker.

Yes
l Replace the Right Front I/P Speaker in accordance with the Service Information.
No
l Go To 4.
4. CHECK THE (X202) RIGHT FRONT DOOR SPEAKER (+) FOR AN OPEN

Fig. 21: Checking Right Front Door Speaker (+) For An Open
3. Measure the resistance of the (X202) Right Front Door Speaker (+) circuit between the Radio
connector and the Right Front Door Speaker harness connector and the Right Front I/P Speaker
harness connector.

Yes
l Go To 5.
No
l Repair an open in the (X202) Right Front Door Speaker (+) circuit.
5. CHECK THE (X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT FOR AN OPEN
Fig. 22: Checking Right Front Door Speaker (-) Circuit For An Open

1. Measure the resistance of the (X292) Right Front Door Speaker (-) circuit between the Radio
connector and the Right Front Door Speaker harness connector and the Right Front I/P Speaker
harness connector.
Yes
No
l Repair an open in the (X292) Right Front Door Speaker (-) circuit.
B1409-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW - BASE

Fig. 23: Rear Left Audio Speaker Wiring Diagram - Base
NOTE: There are two versions of the B1409 DTC test. In order to select the proper test
you must know if the vehicle is equipped with an Amplifier. If the vehicle is
equipped with an Amplifier use the B1409-PREMIUM test. If the vehicle is not

THEORY OF OPERATION
The (X303) Left Rear Speaker (+) circuit and the (X393) Left Rear Speaker (-) circuit are outputs of the Radio.
The Radio controls and monitors these circuits for a concern.
WHEN MONITORED:
With the Radio on.
SET CONDITION:
POSSIBLE CAUSES
DIAGNOSTIC TEST
4. Adjust the speakers to the rear and center.
Does the scan tool read: B1409-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW?
Yes
l Go To 2.
No
equipped with an Amplifier use the B1409-BASE test.
Possible Causes
(X303) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X393) LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND
LEFT REAR SPEAKER
RADIO
DTCs.

2. CHECK LEFT REAR SPEAKER
4. Disconnect the Left Rear Speaker harness connector from the Left Rear Speaker.
Yes
l Go To 3.
No
l Replace the Left Rear Speaker in accordance with the Service Information. Refer to
SPEAKER, REMOVAL .
3. CHECK THE (X303) LEFT REAR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND

Fig. 24: Checking Left Rear Speaker (+) Circuit For A Short To Ground
3. Measure the resistance between ground and the (X303) Left Rear Speaker (+) circuit.
Yes
l Repair the (X303) Left Rear Speaker (+) circuit for a short to ground.

No
l Go To 4.
4. CHECK THE (X393) LEFT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND
Fig. 25: Checking Left Rear Speaker (-) Circuit For A Short To Ground
1. Measure the resistance between ground and the (X393) Left Rear Speaker (-) circuit.

Yes
l Repair the (X393) Left Rear Speaker (-) circuit for a short to ground.
No
B1409-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW - PREMIUM

Fig. 26: Rear Right Audio Speaker Circuit Wiring Diagram - Premium
NOTE: There are two versions of the B1409 DTC test. In order to select the proper test

THEORY OF OPERATION
The (X51) Left Rear Audio (+) circuit and the (X57) Left Rear Audio (-) circuit are outputs of the Radio. The
Radio controls and monitors these circuits for a concern.
WHEN MONITORED:
With the Radio on.
SET CONDITION:
The Radio detects a short to ground condition on the audio output circuit.
POSSIBLE CAUSES
DIAGNOSTIC TEST
Yes
l Go To 2.
No
equipped with an Amplifier use the B1409-PREMIUM test. If the vehicle is not
equipped with an Amplifier use the B1409-BASE test.
Possible Causes
(X51) LEFT REAR AUDIO (+) CIRCUIT SHORTED TO GROUND
(X57) LEFT REAR AUDIO (-) CIRCUIT SHORTED TO GROUND
AMPLIFIER
RADIO
DTCs.

2. CHECK THE AMPLIFIER
Fig. 27: Amplifier Connector End View
4. Disconnect the Amplifier harness connector from the Amplifier.

Yes
l Go To 3.
No
l Replace the Amplifier in accordance with the Service Information.
3. CHECK THE (X51) LEFT REAR AUDIO (+) CIRCUIT FOR A SHORT TO GROUND

Fig. 28: Checking Left Rear Audio (+) Circuit For A Short To Ground
3. Measure the resistance between ground and the (X51) Left Rear Audio (+) circuit.
Yes

l Repair the (X51) Left Rear Audio (+) circuit for a short to ground.
No
l Go To 4.
4. CHECK THE (X57) LEFT REAR AUDIO (-) CIRCUIT FOR A SHORT TO GROUND
Fig. 29: Checking Left Rear Audio (-) Circuit For A Short To Ground

1. Measure the resistance between ground and the (X57) Left Rear Audio (-) circuit.
Yes
l Repair the (X57) Left Rear Audio (-) circuit for a short to ground.
No
B140A-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH - BASE

NOTE: There are two versions of the B140A DTC test. In order to select the proper test
equipped with an Amplifier use the B140A-PREMIUM test. If the vehicle is not

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool read: B140A-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?
Yes
l Go To 2.
No
equipped with an Amplifier use the B140A-BASE test.
Possible Causes
(X303) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X393) LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
RADIO
DTCs.

2. CHECK FOR VOLTAGE ON THE (X303) LEFT REAR SPEAKER (+) CIRCUIT
Fig. 31: Measuring Voltage Between Ground & (X205) Left Rear Speaker (+) Circuit
3. Disconnect the Left Rear Speaker harness connector.

5. Measure the voltage between ground and the (X303) Left Rear Speaker (+) circuit.
Yes
l Repair the (X303) Left Rear Speaker (+) circuit for a short to voltage.
No
l Go To 3.
3. CHECK FOR VOLTAGE ON THE (X393) LEFT REAR SPEAKER (-) CIRCUIT

Fig. 32: Measuring Voltage On The Left Rear Speaker (-) Circuit
1. Measure the voltage between ground and the (X393) Left Rear Speaker (-) circuit.
Yes
l Repair the (X393) Left Rear Speaker (-) circuit for a short to voltage.

No
B140A-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH - PREMIUM

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
The Radio detects a short to battery condition on the audio output circuit.
POSSIBLE CAUSES
DIAGNOSTIC TEST
NOTE: There are two versions of the B140A DTC test. In order to select the proper test
equipped with an Amplifier use the B140A-PREMIUM test. If the vehicle is not
equipped with an Amplifier use the B140A-BASE test.
Possible Causes
(X51) LEFT REAR AUDIO (+) CIRCUIT SHORTED TO VOLTAGE
(X57) LEFT REAR AUDIO (-) CIRCUIT SHORTED TO VOLTAGE
RADIO
DTCs.

Yes
l Go To 2.
No

Yes
l Go To 3.
No
3. CHECK FOR VOLTAGE ON THE (X51) LEFT REAR AUDIO (+) CIRCUIT

Fig. 35: Measuring Voltage Between Ground & Left Rear Audio (+) Circuit
4. Measure the voltage between ground and the (X51) Left Rear Audio (+) circuit.

Yes
l Repair the (X51) Left Rear Audio (+) circuit for a short to voltage.
No
l Go To 4.
4. CHECK FOR VOLTAGE ON THE (X57) LEFT REAR AUDIO (-) CIRCUIT
Fig. 36: Measuring Voltage Between Ground & Left Rear Audio (-) Circuit

1. Measure the voltage between ground and the (X57) Left Rear Audio (-) circuit.
Yes
l Repair the (X57) Left Rear Audio (-) circuit for a short to voltage.
No
B140B-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN - BASE

NOTE: There are two versions of the B140B DTC test. In order to select the proper test
equipped with an Amplifier use the B140B-PREMIUM test. If the vehicle is not

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool read: B140B-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?
Yes
l Go To 2.
No
equipped with an Amplifier use the B140B-BASE test.
Possible Causes
(X303) LEFT REAR SPEAKER (+) CIRCUIT OPEN
(X393) LEFT REAR SPEAKER (-) CIRCUIT OPEN
LEFT REAR SPEAKER
RADIO
DTCs.

2. CHECK THE LEFT REAR SPEAKER
2. Disconnect the Left Rear Speaker harness connect.
Yes
l Replace the Left Rear Speaker in accordance with the Service Information.

No
l Go To 3.
3. CHECK THE (X303) LEFT REAR SPEAKER (+) CIRCUIT FOR AN OPEN
Fig. 39: Checking Left Rear Speaker (+) Circuit For An Open

2. Measure the resistance of (X303) Left Rear Speaker (+) circuit between the Radio harness
connector, and the Left Rear Speaker harness connector.
Yes
l Go To 4.
No
l Repair an open in the (X303) Left Rear Speaker (+) circuit.
4. CHECK THE (X393) LEFT REAR SPEAKER (-) CIRCUIT FOR AN OPEN

Fig. 40: Checking Left Rear Speaker (-) Circuit For An Open
1. Measure the resistance of (X393) Left Rear Speaker (-) circuit between the Radio harness
connector, and the Left Rear Speaker harness connector.
Yes

No
l Repair an open in the (X393) Left Rear Speaker (-) circuit.
B140B-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN - PREMIUM

NOTE: There are two versions of the B140B DTC test. In order to select the proper test

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
The Radio detects an open condition on the audio output circuit.
POSSIBLE CAUSES
DIAGNOSTIC TEST
Yes
l Go To 2.
No
equipped with an Amplifier use the B140B-PREMIUM test. If the vehicle is not
equipped with an Amplifier use the B140B-BASE test.
Possible Causes
(X51) LEFT REAR AUDIO (+) CIRCUIT OPEN
(X57) LEFT REAR AUDIO (-) CIRCUIT OPEN
AMPLIFIER
RADIO
DTCs.

Fig. 42: Checking Amplifier
2. Disconnect the Amplifier harness connector.
3. Connect a jumper wire between the (X51) Left Rear Audio (+) circuit and the (X57) Left Rear
Audio (-) circuits.

Yes
l Go To 3.
No
3. CHECK THE (X51) LEFT REAR AUDIO (+) CIRCUIT FOR AN OPEN

Fig. 43: Checking Left Rear Audio (+) Circuit For An Open
3. Measure the resistance of (X51) Left Rear Audio (+) circuit between the Radio harness connector
and the Amplifier harness connector.

Yes
l Go To 4.
No
l Repair open in the (X51) Left Rear Audio (+) circuit.
4. CHECK THE (X57) LEFT REAR AUDIO (-) CIRCUIT FOR AN OPEN
Fig. 44: Checking Left Rear Audio (-) Circuit For An Open

1. Measure the resistance of (X57) Left Rear Audio (-) circuit between the Radio harness connector,
and the Amplifier harness connector.
Yes
No
l Repair open in the (X57) Left Rear Audio (-) circuit.
B140D-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW - BASE

Fig. 45: Rear Right Audio Speaker Wiring Diagram - Base
NOTE: There are two versions of the B140D DTC test. In order to select the proper test
equipped with an Amplifier use the B140D-PREMIUM test. If the vehicle is not

THEORY OF OPERATION
The (X304) Right Rear Speaker (+) circuit and the (X394) Right Rear Speaker (-) circuit are outputs of the
WHEN MONITORED:
With the Radio on.
SET CONDITION:
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool read: B140D-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW?
Yes
l Go To 2.
No
equipped with an Amplifier use the B140D-BASE test.
Possible Causes
(X304) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X394) RIGHT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND
RIGHT REAR SPEAKER
RADIO
DTCs.

2. CHECK RIGHT REAR SPEAKER
4. Disconnect the Right Rear Speaker harness connector from the Right Rear Speaker.
Does the scan tool read: B140D-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW?
Yes
l Go To 3.
No
l Replace the Right Rear Speaker in accordance with the Service Information.
3. CHECK THE (X304) RIGHT REAR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND

Fig. 46: Checking Right Rear Speaker (+) Circuit For A Short To Ground
3. Measure the resistance between ground and the (X304) Right Rear Speaker (+) circuit.
Yes

l Repair the (X304) Right Rear Speaker (+) circuit for a short to ground.
No
l Go To 4.
4. CHECK THE (X394) RIGHT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND
Fig. 47: Checking Right Rear Speaker (-) Circuit For A Short To Ground

1. Measure the resistance between ground and the (X394) Right Rear Speaker (-) circuit.
Yes
l Repair the (X394) Right Rear Speaker (-) circuit for a short to ground.
No
B140D-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW - PREMIUM

NOTE: There are two versions of the B140D DTC test. In order to select the proper test
equipped with an Amplifier use the B140D-PREMIUM test. If the vehicle is not
equipped with an Amplifier use the B140D-BASE test.

THEORY OF OPERATION
The (X52) Right Rear Audio (+) circuit and the (X58) Right Rear Audio (-) circuit are outputs of the Radio. The
WHEN MONITORED:
With the Radio on.
SET CONDITION:
The Radio detects a short to ground condition on the audio output circuit.
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool read: B140D-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW?
Yes
l Go To 2.
No
Possible Causes
(X52) RIGHT REAR AUDIO(+) CIRCUIT SHORTED TO GROUND
(X58) RIGHT REAR AUDIO(-) CIRCUIT SHORTED TO GROUND
AMPLIFIER
RADIO
DTCs.

4. Disconnect the Amplifier C1 harness connector.
Does the scan tool read: B140D-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes
l Go To 3.
No
3. CHECK THE (X52) RIGHT REAR AUDIO (+) CIRCUIT FOR A SHORT TO GROUND
Fig. 50: Checking Right Rear Audio (+) Circuit For A Short To Ground

3. Measure the resistance between ground and the (X52) Right Rear Speaker (+) circuit.
Yes
l Repair the (X52) Right Rear Audio (+) circuit for a short to ground.
No
l Go To 4.
4. CHECK THE (X58) RIGHT REAR AUDIO (-) CIRCUIT FOR A SHORT TO GROUND

Fig. 51: Checking Right Rear Audio (-) Circuit For A Short To Ground
1. Measure the resistance between ground and the (X58) Right Rear Audio (-) circuit.
Yes
l Repair the (X58) Right Rear Audio (-) circuit for a short to ground.

No
B140E-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH - BASE
Fig. 52: Rear Right Audio Speaker Wiring Diagram - Base

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool read: B140E-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?
Yes
NOTE: There are two versions of the B140E DTC test. In order to select the proper test
equipped an with Amplifier use the B140E-PREMIUM test. If the vehicle is not
equipped with an Amplifier use the B140E-BASE test.
Possible Causes
(X304) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X394) RIGHT REAR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
RADIO
DTCs.

l Go To 2.
No
2. CHECK FOR VOLTAGE ON THE (X304) RIGHT REAR SPEAKER (+) CIRCUIT
Fig. 53: Measuring Voltage On The Right Rear Speaker (+) Circuit

2. Disconnect the Right Rear Speaker harness connector from the Right Rear Speaker.
5. Measure the voltage between ground and the (X304) Right Rear Speaker (+) circuit.
Yes
l Repair the (X304) Right Rear Speaker (+) circuit for a short to voltage.
No
l Go To 3.
3. CHECK FOR VOLTAGE ON THE (X394) RIGHT REAR SPEAKER (-) CIRCUIT

Fig. 54: Measuring Voltage Between Ground & Right Rear Speaker (-) Circuit
1. Measure the voltage between ground and the (X394) Right Rear Speaker (-) circuit.
Yes
l Repair the (X394) Right Rear Speaker (-) circuit for a short to voltage.

No
B140E-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH - PREMIUM

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
The Radio detects a short to battery condition on the audio output circuit.
POSSIBLE CAUSES
DIAGNOSTIC TEST
NOTE: There are two versions of the B140E DTC test. In order to select the proper test
equipped with an Amplifier use the B140E-PREMIUM test. If the vehicle is not
equipped with an Amplifier use the B140E-BASE test.
Possible Causes
(X52) RIGHT REAR AUDIO (+) CIRCUIT SHORTED TO VOLTAGE
(X58) RIGHT REAR AUDIO (-) CIRCUIT SHORTED TO VOLTAGE
RADIO
DTCs.

Yes
l Go To 3.
No

Yes
l Go To 3.
No
3. CHECK FOR VOLTAGE ON THE (X52) RIGHT REAR AUDIO (+) CIRCUIT

Fig. 57: Measuring Voltage Between Ground & Right Rear Audio (+) Circuit
4. Measure the voltage between ground and the (X52) Right Rear Audio (+) circuit.
Yes

l Repair the (X52) Right Rear Audio (+) circuit for a short to voltage.
No
l Go To 4.
4. CHECK FOR VOLTAGE ON THE (X58) RIGHT REAR AUDIO (-) CIRCUIT
Fig. 58: Measuring Voltage Between Ground & Right Rear Audio (-) Circuit

1. Measure the voltage between ground and the (X58) Right Rear Audio (-) circuit.
Yes
l Repair the (X58) Right Rear Audio (-) circuit for a short to voltage.
No
B140F-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN - BASE

NOTE: There are two versions of the B140F DTC test. In order to select the proper test
equipped with an Amplifier use the B140F-PREMIUM test. If the vehicle is not

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool read: B140F-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW?
Yes
l Go To 2.
No
equipped with an Amplifier use the B140F-BASE test.
Possible Causes
(X304) RIGHT REAR SPEAKER (+) CIRCUIT OPEN
(X394) RIGHT REAR SPEAKER (-) CIRCUIT OPEN
RIGHT REAR SPEAKER
DTCs.

2. CHECK THE RIGHT REAR SPEAKER
Fig. 60: Measuring Resistance Of Speaker Between Terminals
2. Disconnect the Right Rear Speaker harness connector.
Yes
l Replace the Right Rear Speaker in accordance with the Service Information.

No
l Go To 3.
3. CHECK THE (X304) RIGHT REAR SPEAKER (+) CIRCUIT FOR AN OPEN
Fig. 61: Checking Right Rear Speaker (+) Circuit For An Open
2. Measure the resistance of the (X304) Right Rear Speaker (+) circuit between the Radio connector
and the Right Rear Speaker harness connector.

Yes
l Go To 4.
No
l Repair an open in the (X304) Right Rear Speaker (+) circuit.
4. CHECK THE (X394) RIGHT REAR SPEAKER (-) CIRCUIT FOR AN OPEN

Fig. 62: Checking Right Rear Speaker (-) Circuit For An Open
1. Measure the resistance of the (X394) Right Rear Speaker (-) circuit between the Radio connector,
and the Right Rear Speaker harness connector.
Yes

No
l Repair an open in the (X394) Right Rear Speaker (-) circuit.
B140F-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN - PREMIUM

NOTE: There are two versions of the B140F DTC test. In order to select the proper test

THEORY OF OPERATION
WHEN MONITORED:
With the Radio on.
SET CONDITION:
The Radio detects an open condition on the audio output circuit.
POSSIBLE CAUSES
DIAGNOSTIC TEST
Does the scan tool read: B140F-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW?
Yes
l Go To 2.
No
equipped with an Amplifier use the B140F-PREMIUM test. If the vehicle is not
equipped with an Amplifier use the B140F-BASE test.
Possible Causes
(X52) RIGHT REAR AUDIO (+) CIRCUIT OPEN
(X58) RIGHT REAR AUDIO (-) CIRCUIT OPEN
AMPLIFIER
RADIO
DTCs.

Fig. 64: Checking Amplifier
2. Disconnect the Amplifier harness connector.
3. Connect a jumper wire between the (X52) Left Rear Audio (+) circuit and the (X58) Left Rear
Audio (-) circuits.

Does the scan tool read: B140F-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?
Yes
l Go To 3.
No
3. CHECK THE (X52) RIGHT REAR AUDIO (+) CIRCUIT FOR AN OPEN

Fig. 65: Checking Right Rear Audio (+) Circuit For An Open
3. Measure the resistance of the (X52) Right Rear Audio (+) circuit between the Radio connector and
the Amplifier harness connector.
Yes
l Go To 4.
No
l Repair an open in the (X52) Right Rear Audio (+) circuit.
4. CHECK THE (X58) RIGHT REAR AUDIO (-) CIRCUIT FOR AN OPEN

Fig. 66: Checking Right Rear Audio (-) Circuit For An Open
1. Measure the resistance of the (X58) Right Rear Audio (-) circuit between the Radio harness
connector, and the Amplifier harness connector.
Yes

No
l Repair an open in the (X58) Right Rear Audio (-) circuit.
B1421-AUDIO CD READ ERROR/INOPERABLE DISC
WHEN MONITORED:
Continuously with the ignition on and the radio CD player turned on.
SET CONDITION:
The code will set if a CD that is not formatted as a music CD is installed in the radio CD player.
POSSIBLE CAUSES
DIAGNOSTIC TEST
1. RADIO
1. Replace the problem CD with a good, clean, unscratched, music CD.
2. Turn the radio CD player on.
3. With the Scan Tool, read DTCs.
Does the Scan Tool display: B1421-Audio CD Read Error/Inoperable Disc?
Yes
l Eject the inoperative CD and replace the CD in accordance with the Service Information.
No
l Test Complete.
B1422-AUDIO DVD READ ERROR/INOPERABLE DISC
Possible Causes
CD READ FAILURE

WHEN MONITORED:
SET CONDITION:
POSSIBLE CAUSES
DIAGNOSTIC TEST
1. DVD PLAYER
1. Replace the problem DVD with a good, clean, unscratched DVD.
2. Turn the DVD player on.
3. With the Scan Tool, read DTCs.
Does the Scan Tool display: B1422 Audio DVD Read Error/Inoperable Disc?
Yes
l Eject the inoperative DVD and replace the DVD in accordance with the service information.
No
l Test Complete. Refer to STANDARD PROCEDURE .
B1429-RADIO DISPLAY HIGH TEMPERATURE
WHEN MONITORED:
Continuously with the ignition and Navigation Radio on.
SET CONDITION:
The code will set if the temperature inside the display exceeds 70°C (158°F)
POSSIBLE CAUSES
Possible Causes
DVD READ FAILURE
Possible Causes
HIGH TEMPERATURE FAILURE

DIAGNOSTIC TEST
1. VERIFY THAT DTC B1429-RADIO DISPLAY HIGH TEMPERATURE IS ACTIVE
1. With the scan tool, erase the Audio DTCs.
2. Start the engine and allow the engine to reach normal operating temperature.
3. If the vehicle has been in the hot sunlight or extreme cold, move the vehicle indoors and open the
doors to allow the inside temperature to stabilize.
4. The radio display should operate to 70°C (158°F).
5. With the scan tool, read the DTCs.
Does the scan tool display, B1429-Radio Display High Temperature?
Yes
No
l Test Complete.
B142A-RADIO UNIT HIGH TEMPERATURE
WHEN MONITORED:
Continuously with the ignition and Radio on.
SET CONDITION:
The code will set if the temperature inside the radio is above 65°C (145°F).
POSSIBLE CAUSES
DIAGNOSTIC TEST
1. VERIFY THAT DTC B142A-RADIO UNIT HIGH TEMPERATURE IS ACTIVE.
1. With the scan tool, erase the Audio DTCs.
2. Start the engine and allow the engine to reach normal operating temperature.
3. If the vehicle has been in the hot sunlight or extreme cold, move the vehicle indoors and open the
Possible Causes
HIGH TEMPERATURE FAILURE

doors to allow the inside temperature to stabilize.
4. The Radio should operate between -23°C and 65°C (-10°F and 145°F).
5. With the scan tool, read the DTCs.
Does the scan tool display, B142A-Radio Unit High Temperature?
Yes
No
l Test Complete.
B142D-AUDIO ANTENNA NOT CONNECTED
WHEN MONITORED:
With the ignition on and the Radio in seek mode.
SET CONDITION:
With the Radio in seek mode for two loops around the band. The Radio does not detect an Antenna connection
or does not receive a Radio station signal.
POSSIBLE CAUSES
DIAGNOSTIC TEST
1. CHECK THE ANTENNA CONNECTIONS
2. Disconnect the Radio Antenna connector.
3. Inspect the Radio Antenna connection.
Was the Antenna connection clean and secure?
Possible Causes
BAD ANTENNA CONNECTION
OPEN ANTENNA CABLE
RADIO

DTC GRAND CARAVAN.pdf

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DTC GRAND CARAVAN.pdf