Speakers Inoperative - One Or More - Suzuki XL7 2007 Service Manual

9O-55 Cellular / Entertainment / Navigation / Audio:

Speakers Inoperative - One or More

Diagnostic Instructions
• Perform the "Diagnostic System Check - Vehicle
Diagnostic Information: " prior to using this diagnostic
procedure.
• Review "Strategy Based Diagnosis: " for an overview
of the diagnostic approach.
• "Diagnostic Procedure Instructions - Vehicle
Diagnostic Information: " provides an overview of
each diagnostic category.
Reference Information
Schematic Reference
"Radio/Navigation System Schematics"
Connector End View Reference
"Entertainment/Communication Connector End Views"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Scan Tool Reference
"Scan Tool Data List - Cellular, Entertainment, and
Navigation"
Special Tools Required
J 39916-A CD Diagnostic Audio Kit
Circuit/System Testing (Digital Radio One or
More Speakers Inoperative)
1. Ignition OFF, disconnect the radio C2 harness
connector.
2. Ignition ON, operate the digital radio and increase
the radio volume.
3. Verify AC voltage is not present between the suspect
remote radio audio signal (+) and remote radio audio
signal (-).
➢ If AC voltage is present, replace the radio.
4. Ignition OFF, disconnect the digital radio harness
connector.
5. Test for less than 1 volt on both suspect remote radio
audio signal (+) and remote radio audio signal (-).
➢ If greater than 1 volt repair short to voltage.
6. Test for less than 1 ohm between the suspect remote
radio audio signal (+) radio harness connector
terminal and the suspect remote radio audio signal
(+) digital radio C2 harness connector terminal.
➢ If greater than specified value repair open or high
resistance.
7. Test for less than 1 ohm between the suspect remote
radio audio signal (-) radio harness connector
terminal and the suspect remote radio audio signal (-
) digital radio C2 harness connector terminal.
➢ If greater than specified value repair open or high
resistance.
8. If all circuits test normal, replace the digital radio
receiver (DRR).
Circuit/System Testing (One or More Speakers
Inoperative With Amplifier)
1. Center the balance and fade adjustment on the
radio.
➢ If adjustment of the fade and balance eliminates the
concern, review the operation of the radio with the
customer.
2. Ignition OFF, Disconnect the suspect amplifier
harness connector. If the suspect speaker inputs are
contained in the same harness as the amplifier
power and ground It will be required to re-connect
the power and ground by using a fused jumper
harness.
3. Ignition ON, operate the radio and increase the radio
volume.
4. Verify AC voltage is not present between the suspect
speaker output (+) and speaker output (-) circuits.
➢ If AC voltage is present, replace the radio.
5. Reconnect the amplifier harness connector.
6. Disconnect the suspect speaker harness connector.
7. Verify AC voltage is not present between the suspect
speaker output (+) and speaker output (-) circuits.
➢ If AC voltage is present, replace the suspect
speaker.
8. Ignition OFF, Disconnect the suspect amplifier
harness connector
9. Test for less than 1 volt on both suspect speaker
output (+) and speaker output (-) circuits.
➢ If greater than 1 volt repair short to voltage.
10. Test for less than 1 ohm between the suspect
speaker output (+) radio harness connector terminal
and the suspect speaker output (+) speaker harness
connector terminal.
➢ If greater than specified value repair open or high
resistance.
11. Test for less than 1 ohm between the suspect
speaker output (-) radio harness connector terminal
and the suspect speaker output (-) speaker harness
connector terminal.
➢ If greater than specified value repair open or high
resistance.
12. If all circuits test normal, replace the amplifier.