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When the M.U.T.-III cannot communicate with the TCL/ASC system, there may be a malfunction to the CAN bus lines, ASC-ECU power supply circuit system, earth, or ASC-ECU.
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- Damaged wiring harness and connectors
- ASC-ECU malfunction
- Wrong M.U.T.-III wiring harness
- Abnormality in battery or alternator
- Abnormality in power supply voltage to ASC-ECU
- ECU malfunction of other system
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Using the M.U.T.-III, diagnose the CAN bus lines.
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Q.
Is the check result normal?
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Check and repair the power supply circuit system ( Refer to )
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Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
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