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DTC Advanced Diagnostics: U0122-00
DTC U0122-00: Lost Communication With the VSA Modulator-Control Unit (wheel speed sensor signal error)
NOTE
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Always check "How to troubleshoot the SRS system" and proceed along each "DTC Troubleshooting" procedure. |
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Make sure the 12 volt battery is fully charged. If not, the results of tests may not be accurate. |
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The SRS indicator will turn on when the 12 volt battery voltage becomes below 10 volts. |
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The possible causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes. |
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Confirmation Procedure |
Basic Condition:
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12 volt battery voltage 10 - 16 V |
Operating Condition:
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1. |
Turn the vehicle to the ON mode, and wait 6 seconds. | |
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Duration |
About 6 seconds |
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DTC Type |
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1 drive cycle |
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SRS indicator on | |
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Fail Safe Action |
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Possible Cause |
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Open or Poor connection between the VSA modulator-control unit and the SRS unit (F-CAN_H, F-CAN_L lines) |
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VSA modulator-control unit internal failure | | |
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