MONITOR DESCRIPTION The ECM uses sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The first sensor, the air fuel ratio sensor, sends pre-catalyst information to the ECM. The second sensor, the heated oxygen sensor, sends post-catalyst informat
FAIL-SAFE CHART FAIL-SAFE FUNCTION (a) If a malfunction is detected in the intelligent clearance sonar system, the warning message "Parking Support Brake System Malfunction Visit Your Dealer" or "Parking Support Brake Unavailable" is displayed on the multi-information display, the ICS OFF indicator