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A fault detection enabling/inhibiting signal is sent from the ETACS-ECU to the EPS-ECU.
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Check Conditions
Ignition switch: ON position
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Judgement Criterion
When the microcomputer cannot receive any fault detection enabling/inhibiting signal from the ETACS-ECU, it determines that there is a problem in the system.
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Fail Safe, Back Up Function
The EPS-ECU stores diagnosis code No. U1190.
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- Malfunction of CAN bus line
- Malfunction of the ETACS-ECU
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