2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 253
4. Check resistance between engine coolant temperature sensor terminals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace engine coolant temperature sensor.
P0130
P0130, P0150 A/F SENSOR 1
Description
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. The sensor element of the A/F sensor 1 is composed an electrode layer,
which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a
clear, continuous signal throughout a wide range.
The exhaust gas components diffuse through the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative
oxygen density in lean. Also this current relative hydrocarbon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this electrode layer of current. In addition, a heater is integrated in the sensor to
ensure the required operating temperature of approximately 800锟紺 (1,472锟紽).
DTC Logic
DTC DETECTION LOGIC
To judge malfunctions, the diagnosis checks that the air fuel ratio (A/F) signal computed by ECM from the A/F sensor 1 signal fluctuates
according to fuel feedback control.
