DTC B1A89:13 [CONNECTIVITY MASTER UNIT]
id0902n7105900
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Description |
DAB antenna feeder malfunction |
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Detection condition
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• The connectivity master unit detects an open circuit in DAB antenna feeder with the ignition switched ON (engine off or on).
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Fail-safe function
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Not applicable
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Possible cause
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• Tuner and amp unit (TAU) connector or terminal malfunction
• Antenna feeder No.1 connector or terminal malfunction
• Open circuit in DAB antenna feeder No.1
• Antenna feeder No.2 connector or terminal malfunction
• Open circuit in DAB antenna feeder No.2
• Antenna feeder No.3 connector or terminal malfunction
• Open circuit in DAB antenna feeder No.3
• Center roof antenna malfunction
• Tuner and amp unit (TAU) malfunction
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System wiring diagram
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Not applicable
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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INSPECT TUNER AND AMP UNIT (TAU) CONNECTOR CONDITION
• Switch the ignition off.
• Disconnect the negative battery terminal.
• Disconnect the tuner and amp unit (TAU) connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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Yes
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Go to the next step.
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No
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Repair or replace the connector, then go to Step 9.
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2
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INSPECT ANTENNA FEEDER NO.1 CONNECTOR CONDITION
• Disconnect the antenna feeder No.1 connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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Yes
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Go to the next step.
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No
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Repair or replace the connector, then go to Step 9.
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3
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INSPECT DAB ANTENNA FEEDER NO.1
• Inspect DAB antenna feeder No.1.
• Is DAB antenna feeder No.1 normal?
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Yes
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Go to the next step.
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No
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Replace DAB antenna feeder No.1, then go to Step 9.
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4
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INSPECT ANTENNA FEEDER NO.2 CONNECTOR CONDITION
• Disconnect the antenna feeder No.2 connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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Yes
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Go to the next step.
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No
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Repair or replace the connector, then go to Step 9.
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5
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INSPECT DAB ANTENNA FEEDER NO.2
• Inspect DAB antenna feeder No.2.
• Is DAB antenna feeder No.2 normal?
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Yes
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Go to the next step.
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No
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Replace DAB antenna feeder No.2, then go to Step 9.
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6
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INSPECT ANTENNA FEEDER NO.3 CONNECTOR CONDITION
• Disconnect the antenna feeder No.3 connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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Yes
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Go to the next step.
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No
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Repair or replace the connector, then go to Step 9.
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7
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INSPECT DAB ANTENNA FEEDER NO.3
• Inspect DAB antenna feeder No.3.
• Is DAB antenna feeder No.3 normal?
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Yes
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Go to the next step.
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No
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Replace DAB antenna feeder No.3, then go to Step 9.
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8
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INSPECT DAB ANTENNA FEEDER
• Inspect the DAB antenna feeder.
• Is the DAB antenna feeder normal?
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Yes
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Go to the next step.
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No
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Replace the center roof antenna, then go to the next step.
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9
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VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Always reconnect all disconnected connectors.
• Reconnect the negative battery terminal.
• Clear the DTC for the connectivity master unit using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 7 s or more.
• Perform the DTC inspection for the connectivity master unit using the M-MDS.
• Is the same DTC displayed?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the tuner and amp unit (TAU).
Go to the next step.
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No
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Go to the next step.
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10
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VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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