DTC B1960-B1963 (IOR)

Cellular, Entertainment, and Navigation | Diagnostic Information and Procedures | Document ID: 5509089 Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provide an overview of each diagnostic category. DTC Descriptors DTC B1960 Left Front Speaker DTC B1961 Right Front Speaker DTC B1962 Left Rear Speaker DTC B1963 Right Rear Speaker For symptom byte information refer to Symptom Byte List. Diagnostic Fault Information

Circuit	Circuit Function	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performan
201	Signal	B1960 11	B1960 13	B1960 12	—
118	Signal	B1960 11	B1960 13	B1960 12	—
200	Signal	B1961 11	B1961 13	B1961 12	—
117	Signal	B1961 11	B1961 13	B1961 12	—
199	Signal	B1962 11	B1962 13	B1962 12	—
116	Signal	B1962 11	B1962 13	B1962 12	—
46	Signal	B1963 11	B1963 13	B1963 12	—
115	Signal	B1963 11	B1963 13	B1963 12	—

Circuit/System Description Each of the audio output channel circuits (+) and (−), at the A11 Radio have a DC bias voltage. When using a DMM, each of the front audio output channel circuits will measure approximately 3V  DC, and each of the rear audio output channel circuits will measure approximately 9V DC. The audio being played on the system is produced by a varying AC voltage that is centered around the DC bias voltage on the same circuit. The AC voltage is what causes the speaker cone to move and produce sound. Diagnostic Aids Improper speaker mounting or loose trim may cause an audible buzz or distortion. Inspect the appropriate speaker and the surrounding interior trim for proper and secure mounting. The EL-50334-6 Audio System Diagnostic CD contains audio tracks that can be used to duplicate and isolate such concerns. Tracks 11 and 12 contain audio sweep tones for testing for speaker and grill rattles. If the speaker or surrounding interior trim is found to be loose or improperly secured, correctly secure the item. The test tones on the CD may be copied to a USB drive or other device to use during testing. Some audio output circuits are connected to more than one speaker, dependant on vehicle equipment. It may be necessary to disconnect one or more speakers during testing of some circuits. Conditions for Running the DTC DTC U3006, U3007, U3008, or U3009 is not set. B1960 11, B1961 11, B1962 11, B1963 11 The test is run initially upon amplifier wake-up, and periodically every one second after amplifier operation begins. B1960 12, B1961 12, B1962 12, B1963 12 The test is run initially upon amplifier wake-up, and periodically every one second after amplifier operation begins. B1960 13, B1961 13, B1962 13, B1963 13 The test is run once during amplifier wake-up. Conditions for Setting the DTC B1960 11, B1961 11, B1962 11, B1963 11 A short to ground is detected on the specified (+) or (−) signal circuit B1960 12, B1961 12, B1962 12, B1963 12 A short to voltage is detected on the specified (+) or (−) signal circuit B1960 13, B1961 13, B1962 13, B1963 13 An open is detected on the specified (+) or (−) signal circuit Action Taken When the DTC Sets The A11 Radio mutes the output channel and no sound is present from the speaker(s) that have a current circuit fault. Conditions for Clearing the DTC The condition for setting the DTC is no longer present. A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred. Reference Information Schematic Reference Radio/Navigation System Schematics Connector End View Reference Master Electrical Component List Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Verification

1. Ignition ON/Vehicle in Service Mode. Infotainment system ON, mute OFF.
2. Verify clear audio is heard from each speaker, adjusting fade and balance controls to test each speaker individually. ⇒ If audio is inoperative from one or more speakers, or the audio emitted is not clear. Refer to Circuit/System Testing. ⇓ If clear audio is heard from all speakers
3. A fault is currently not present and may be an intermittent condition. Circuit/System Testing

Note

More than one speaker may be connected to each signal circuit in a parallel configuration. Make sure to disconnect all speakers on the signal circuit.

1. Ignition OFF, disconnect the appropriate P19 Speaker(s): DTC B1960 = P19 Speaker(s) connected to circuit 201 DTC B1961 = P19 Speaker(s) connected to circuit 200 DTC B1962 = P19 Speaker(s) connected to circuit 199 DTC B1963 = P19 Speaker(s) connected to circuit 46
2. Ignition ON, infotainment system ON, mute OFF.
3. Test for 2-10 V between the signal circuit terminal 2 and ground. ⇒ If less than 2 V 3.1. Test the appropriate circuit for a short to ground: DTC B1960 = Circuit 201 DTC B1961 = Circuit 200 DTC B1962 = Circuit 199 DTC B1963 = Circuit 46 ⇒ If a short to ground is found, repair the circuit fault. ⇓ If a short to ground is not found 3.2. Test the appropriate circuit for an open/high resistance: DTC B1960 = Circuit 201 DTC B1961 = Circuit 200 DTC B1962 = Circuit 199 DTC B1963 = Circuit 46 ⇒ If an open/high resistance is found, repair the circuit fault. ⇓ If an open/high resistance is not found 3.3. Replace the A11 Radio. ⇒ If greater than 10 V 3.1. Test the appropriate circuit for a short to voltage: DTC B1960 = Circuit 201 DTC B1961 = Circuit 200 DTC B1962 = Circuit 199 DTC B1963 = Circuit 46 ⇒ If a short to voltage is found, repair the circuit fault. ⇓ If a short to voltage is not found 3.2. Replace the A11 Radio. ⇓ If between 2–10 V
4. Test for 2-10 V between the signal circuit terminal 1 and ground. ⇒ If less than 2 V 4.1. Test the appropriate circuit for a short to ground: DTC B1960 = Circuit 118 DTC B1961 = Circuit 117 DTC B1962 = Circuit 116 DTC B1963 = Circuit 115 ⇒ If a short to ground is found, repair the circuit fault. ⇓ If a short to ground is not found 4.2. Test the appropriate circuit for an open/high resistance: DTC B1960 = Circuit 118 DTC B1961 = Circuit 117 DTC B1962 = Circuit 116 DTC B1963 = Circuit 115 ⇒ If an open/high resistance is found, repair the circuit fault. ⇓ If an open/high resistance is not found 4.3. Replace the A11 Radio. ⇒ If greater than 10 V 4.1. Test the appropriate circuit for a short to voltage: DTC B1960 = Circuit 118 DTC B1961 = Circuit 117 DTC B1962 = Circuit 116 DTC B1963 = Circuit 115 ⇒ If a short to voltage is found, repair the circuit fault. ⇓ If a short to voltage is not found 4.2. Replace the A11 Radio. ⇓ If between 2-10 V
5. Disconnect the appropriate harness connector at the A11 Radio
6. Test for infinite resistance between signal circuit terminal 1 and signal circuit terminal 2 at the appropriate P19 Speaker. ⇒ If less than infinite resistance Repair the short between the two signal circuits. ⇓ If infinite resistance
7. Replace the appropriate P19 Speaker. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. Speaker Replacement Reference Control Module References