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Check the items below in the MMCS service mode (Refer to ).
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- Perform "Network/Connect Line
Check" in the MMCS service mode to check that the communication and wire connection with the
GPS are in good condition.
- Perform "Vehicle Signal Check", and then check the status of the
vehicle speed signal.
- Perform "Sensor Check", and then check the status of the vehicle
speed sensor and the gyro sensor.
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Q.
Is the check result normal?
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YES (OK for all) : Go to Step 7.
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NO <GPS is not OK> : Go to Step 2.
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NO <The vehicle speed sensor is not OK, or vehicle speed pulse does not increase
after starting from a standstill> : Go to Step 4.
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NO <Gyro sensor is not OK> : Go to Step 7.
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Check whether the GPS antenna cable is connected properly.
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Q.
Is the GPS antenna cable connected properly?
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The trouble can be an intermittent malfunction (Refer to GROUP 00 -
How
to use Troubleshooting/inspection Service Points -
How to Cope with Intermittent
Malfunction ).
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Q.
Is the check result normal?
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Check whether the speedometer works normally.
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Q.
Does the speedometer work normally?
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Diagnose the combination meter (Refer to Combination meter -
Troubleshooting ).
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Q.
Is the check result normal?
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Repair the defective connector.
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- Check the communication lines for open circuit.
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Q.
Is the check result normal?
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Repair the wiring harness.
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Check whether the navigation screen is normal.
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Q.
Is the navigation screen normal?
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Replace the audio visual navigation unit.
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Replace the combinaiton meter.
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