Engine Diesel Engines
• The signal of the upper exhaust gas temperature sensor allows checking, whether the
exhaust gas temperature required for operation of the oxidation catalytic converter is
reached.
• The signal of the middle exhaust gas temperature sensor is used to determine, whether
the exhaust gas temperature required for regeneration of the filter is reached.
• The signal of the lower exhaust gas temperature sensor serves to monitor the exhaust
gas temperature during the regeneration process.
• In addition, the information from the exhaust gas temperature sensors is used for the
calculation of the soot amount burnt off in the DPF.
M6FL_01084
1 Exhaust gas temperature sensor 2 PCM
Service Training Mazda6 Facelift 01-69
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