1. Measure the temperature around the ambient temperature sensor and measure the resistance between the ambient temperature sensor terminal.

If the characteristics of the ambient temperature sensor are not as shown in the graph, replace the ambient temperature sensor.
Airflow Mode Actuator Removal/Installation [Full Auto Air Conditioner]
Ambient Temperature Sensor Inspection [Manual Air Conditioner]i-ACTIVSENSE
i-ACTIVSENSE is a collective term covering a series of advanced safety and
driver support
systems which make use of a Forward Sensing Camera (FSC) and radar sensors.
These
systems consist of active safety and pre-crash safety systems.
These systems are designed to assist the driver in safer ...
Taking Action
Take the appropriate action and verify that the warning light turns off.
KEY Warning Light
Take the appropriate action and verify that the warning light turns off.
...
Check Valve (One Way) Inspection [Mzr 2.3 Disi Turbo]
1. Disconnect the vacuum hose connected between the check valve and the purge
solenoid valve from the purge solenoid valve..
2. Disconnect the vacuum hose connected between the check valve (one-way) and
the intake manifold from the intake manifold..
3. Blow through the check valve (one-way) ...