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Use the M.U.T.-III to diagnose the CAN bus lines.
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Q.
Is the check result normal?
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Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).
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Check if diagnosis code is set in the combination meter.
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Q.
Is the diagnosis code set?
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Refer to Diagnosis code chart.
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Check if diagnosis code is set in the engine-ECU, CVT-ECU, ASC-ECU, KOS&OSS-ECU,
ETACS-ECU, laser radar (FCM-ECU), A/C-ECU or heater control unit.
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Q.
Is the diagnosis code set in the any of the above?
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Set in the engine-ECU. : Troubleshoot the engine (Refer to GROUP 13A - Troubleshooting ).
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Set in the CVT-ECU. : Troubleshoot the CVT. Refer to GROUP 23A - Diagnosis code chart .
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Set in the ASC-ECU. : Troubleshoot the ASC. Refer to GROUP 35C - Troubleshooting .
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Set in the KOS&OSS-ECU. : Troubleshoot the KOS. Refer to GROUP 42B - Troubleshooting.
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Set in the ETACS-ECU. : Troubleshoot the ETACS.
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Set in the laser radar (FCM-ECU). : Troubleshoot the Forward Collision Mitigation System (Low speed range) (FCM-LS).
Refer to .
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Set in the A/C-ECU/Heater control unit. : Troubleshoot the A/C-ECU/Heater control unit. Refer to GROUP 55B - Troubleshooting.
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The diagnosis code is not set. : Go to Step 4.
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Using M.U.T.-III, select "Test" from the special function of the combination meter. Execute
the following item to check the buzzer.
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Q.
Is the check result normal?
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Replace the combination meter.
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Check that the buzzers sound normally.
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Q.
Is the check result normal?
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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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Replace the combination meter.
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