Toyota Avalon Service & Repair Manual: Fail-safe Chart

FAIL-SAFE CHART

FAIL-SAFE FUNCTION

(a) If a malfunction is detected in the intelligent clearance sonar system, the warning message "ICS System Malfunction Visit Your Dealer" or "ICS Unavailable" is displayed on the multi-information display, the ICS OFF indicator blinks and the intelligent clearance sonar system control is prohibited as necessary.

(b) If the clearance warning ECU assembly judges that there is foreign matter on an ultrasonic sensor or detection of objects is not possible in severe weather such as snow, the warning message "ICS Unavailable" is displayed, the ICS OFF indicator blinks and control is cancelled. The warning message "ICS Unavailable" is temporarily displayed and turns off. The ICS OFF indicator blinks to inform the driver of the malfunction. When detection of an obstacle is possible, the ICS OFF indicator turns off and the intelligent clearance sonar system control returns to normal.

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    How To Proceed With Troubleshooting

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