On early 16V models the manifold pressure sensor is not required for fuel calculations because the air flow meter measures either air flow by volume (Denso) or airflow by mass (Hitachi), later 16V models have a manifold pressure sensor that is used for diagnostics.
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1984 Suzuki SJ413K pick up, 1.6 16V Baleno engine 2000 Suzuki Vitara 1.6 8V, many mods 2004 Suzuki Ignis 1.5VVT 4Grip 2006 Suzuki Jimny 1.3VVT JLX+ and many more.
Thanks anyway. For some reason, I do not have the manifold pressor sensor in this engine (Suzuki Vitara G16B) and that could have explained why EGR flow is 0.
I'm thinking whether it's usual not having a manifold pressure on some engine model. Any thought please?
EGR opening is usually controlled relative to RPM, engine load, engine temperature and possibly vehicle speed. The FSM usually contains information regarding EGR behaviour.
I haven't spent much time looking at the EGR control, I would expect the flow rate to be a function of manifold pressure, engine speed, engine temperature and EGR opening. Rhinoview just reports the values as defined by Suzuki.
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1984 Suzuki SJ413K pick up, 1.6 16V Baleno engine 2000 Suzuki Vitara 1.6 8V, many mods 2004 Suzuki Ignis 1.5VVT 4Grip 2006 Suzuki Jimny 1.3VVT JLX+ and many more.
I decided to create another topic to avoid the confusion and for a sake of people searching.
Another question about the EGR.
1. Having monitored the EGR flag viewer, I understand that EGR only opens if the RPM is greater than 1800 RPM. Is this a correct behavior?
2. When it comes to data viewer, I was expecting to see the rising of EGR flow rate (l/min) at the data viewer screen but it was always at 0. Assuming no flow rate sensor at the EGR, my question is that how the ECU calculates the EGR flow rate? Is it the same way IAC is calculated (note that my IAC flow rate seems ok ranging between 50-170 l/min.)
