Diesel Engines Engine
Exhaust Gas Temperature Sensors
• The three exhaust gas temperature sensors (upper/middle/lower) are located in the
combined housing of the oxidation catalytic converter/DPF and detect the temperature of
the exhaust gas upstream of the oxidation catalytic converter, as well as upstream and
downstream of the DPF. Each sensor is a temperature-resistive resistor with NTC, i.e. its
resistance becomes smaller when the temperature rises. The exhaust gas temperature
sensor supplies the PCM with an analogue voltage signal between 0…5 V.
M6FL_01045
1 Exhaust gas temperature sensor (upper) 5 Exhaust gas temperature sensor
2 Oxidation catalytic converter and DPF 6 Thermistor element
3 Exhaust gas temperature sensor (lower) 7 Cover
4 Exhaust gas temperature sensor (middle) 8 Sheath pin
01-68 Service Training Mazda6 Facelift
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