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ABS-ECU communicates with the engine ECU, 4WD-ECU and ETACS-ECU via the CAN bus lines.
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This diagnosis code is set if ABS-ECU cannot receive the signal sent from other ECU for
a certain period.
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Code No. U0100
- Wiring harness or connector failure of CAN bus line
- Engine ECU malfunction
- ABS-ECU malfunction
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Code No. U0114
- Wiring harness or connector failure of CAN bus line
- 4WD-ECU malfunction
- ABS-ECU malfunction
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Code No. U0141
- Wiring harness or connector failure of CAN bus line
- Malfunction of ETACS-ECU
- ABS-ECU malfunction
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Use scan tool 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 - CAN Bus Diagnosis table ).
On completion, go to Step 4.
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Use scan tool to check that other diagnosis code is set in the ECU corresponding to the
relevant diagnosis.
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Q.
Is other diagnosis code set?
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Troubleshoot for the relevant diagnosis code.
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Use scan tool to check that the diagnosis code is set in ABS-ECU.
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Q.
Is any diagnosis code set?
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YES (Code No. U0100 is set) : Replace the engine ECU, and then go to Step 4.
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YES (Code No. U0114 is set) : Replace 4WD-ECU, and then go to Step 4.
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YES (Code No. U0141 is set) : Replace the ETACS-ECU, and then go to Step 4.
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NO (No diagnosis code is set.) : The procedure is complete.
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Q.
Is Code No. U0100, U0114 or U0141 set?
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The procedure is complete.
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