DTC: 21:Er19, DEVICE CORD 21/ERROR CORD 19 [AUDIO]
id0902f6445400
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DESCRIPTION |
Audio unit internal malfunction |
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DETECTION CONDITION
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Communication error between the audio unit and audio panel
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POSSIBLE CAUSE
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• Audio panel malfunction
• Audio unit malfunction
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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INSPECT AUDIO PANEL
• Launch the switch inspection mode.
• Does the buzzer sound when a switch is pressed?
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Yes
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Go to Step 4.
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No
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With display
• Go to Step 3.
Without display
• Go to the next step.
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2
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INSPECT AUDIO PANEL AND AUDIO UNIT
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable.
• Disassemble and reassemble the audio panel and audio unit.
• Reconnect the negative battery cable.
• Launch the switch inspection mode.
• Does the buzzer sound when a switch is pressed?
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Yes
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Go to Step 4.
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No
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Replace the audio panel, then go to the next step.
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3
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VERIFY TROUBLESHOOTING COMPLETED
• Clear the DTC from the audio unit memory.
(See CLEARING DTC [AUDIO].)
• Perform the audio unit DTC inspection.
(See DTC INSPECTION [AUDIO].)
• Is the same DTC present?
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Yes
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Replace the audio unit, then go to the next step.
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No
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Go to the next step.
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4
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VERIFY THAT NO OTHER DTCs ARE RECORDED
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [AUDIO].)
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No
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DTC troubleshooting completed.
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