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1
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VERIFY THAT INCORRECT DISPLAY IS NOT INSTALLED
• Verify that the display installed on the vehicle is a Mazda genuine center display.
• Is the installed display a Mazda genuine center display?
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Yes
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Go to the next step.
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No
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Explain to the customer that a display other than a Mazda genuine is installed.
• Replace with a Mazda genuine center display, then go to Step 8.
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2
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INSPECT CENTER DISPLAY CONNECTOR CONDITION
• Switch the ignition off.
• Disconnect the negative battery terminal.
• Disconnect the center display 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 8.
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3
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INSPECT CONNECTIVITY MASTER UNIT (CMU) CONNECTOR CONDITION
• Disconnect the connectivity master unit (CMU) 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 8.
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4
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INSPECT CENTER DISPLAY CIRCUIT FOR SHORT TO GROUND
• Verify that the center display and connectivity master unit (CMU) connectors are disconnected.
• Inspect for continuity between the following terminals (wiring harness-side) and body ground:
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? Center display terminal 2B
? Center display terminal 2D
• Is there continuity?
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Yes
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Refer to the wiring diagram and verify if there is a common connector between the following terminals:
• Connectivity master unit (CMU) terminal 3B—Center display terminal 2B
• Connectivity master unit (CMU) terminal 3D—Center display terminal 2D
If there is a common connector:
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
• Repair or replace the malfunctioning location.
If there is no common connector:
• Repair or replace the wiring harness which has a short to ground.
Go to Step 8.
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No
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Go to the next step.
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5
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INSPECT CENTER DISPLAY CIRCUIT FOR SHORT TO POWER SUPPLY
• Verify that the center display and connectivity master unit (CMU) connectors are disconnected.
• Connect the negative battery terminal.
• Switch the ignition ON (engine off or on).
• Measure the voltage at the following terminals (wiring harness-side):
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? Center display terminal 2B
? Center display terminal 2D
• Is the voltage 0 V?
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Yes
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Go to the next step.
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No
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Refer to the wiring diagram and verify if there is a common connector between the following terminals:
• Connectivity master unit (CMU) terminal 3B—Center display terminal 2B
• Connectivity master unit (CMU) terminal 3D—Center display terminal 2D
If there is a common connector:
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
• Repair or replace the malfunctioning location.
If there is no common connector:
• Repair or replace the wiring harness which has a short to power supply.
Go to Step 8.
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6
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INSPECT CENTER DISPLAY CIRCUIT FOR OPEN CIRCUIT
• Switch the ignition off.
• Disconnect the negative battery terminal.
• Verify that the center display and connectivity master unit (CMU) connectors are disconnected.
• Inspect the wiring harness for continuity between the following terminals (wiring harness-side):
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? Connectivity master unit (CMU) terminal 3B—Center display terminal 2B
? Connectivity master unit (CMU) terminal 3D—Center display terminal 2D
• Is there continuity?
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Yes
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Go to the next step.
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No
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Refer to the wiring diagram and verify if there is a common connector between the following terminals:
• Connectivity master unit (CMU) terminal 3B—Center display terminal 2B
• Connectivity master unit (CMU) terminal 3D—Center display terminal 2D
If there is a common connector:
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
• Repair or replace the malfunctioning location.
If there is no common connector:
• Repair or replace the wiring harness which has an open circuit.
Go to Step 8.
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7
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VERIFY IF MALFUNCTIONING LOCATION IS CENTER DISPLAY DEPENDING ON REPEATABILITY
• Always reconnect all disconnected connectors.
• Connect the negative battery terminal.
• Clear the DTC for the connectivity master unit (CMU) using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 7 s or more.
• Retrieve the connectivity master unit (CMU) DTCs using the M-MDS.
• Is the same DTC displayed?
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Yes
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Replace the center display, then go to the next step.
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No
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Go to Step 9.
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8
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VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Always reconnect all disconnected connectors.
• Connect the negative battery terminal.
• Clear the DTC for the connectivity master unit (CMU) using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 7 s or more.
• Retrieve the connectivity master unit (CMU) DTCs 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 connectivity master unit (CMU).
Go to the next step.
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No
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Go to the next step.
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9
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VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
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Yes
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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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