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Use 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 lines (refer to Group 54C - Troubleshooting ).
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(1)Connect the negative battery terminal.
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Q.
Does the SRS warning light illuminate for approximately 6 to 8 seconds and then go out after the ignition switch is turned to the "ON" position?
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
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Use M.U.T.-III to perform the combination meter actuator tests.
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Q.
Does the SRS warning lamp turn on and off normally?
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Replace the combination meter (Refer to GROUP 54A - Combination Meter ).
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After erasing the diagnosis code memory, check the diagnosis code.
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Q.
Is the diagnosis code set?
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Troubleshoot for the relevant diagnosis code (Refer to ).
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Q.
Does the lamp stay ON?
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Replace the SRS-ECU (Refer to ).
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This diagnosis is complete.
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