Bakit ang ECU nasa loob na ng car hood?

**tomboy** · April 30th, 2012 07:35 AM

Yung sa FD bakit nasa loob na ng car hood ang ECU? Para iwas baha if sa gilid ng passenger door nakalagay?

Pero di ba mainit sa loob ng car hood hindi ba masisira yung ecu pag doon?

Kunyari sumabog radiator, tightly sealed ba yung ecu na walang tubig makakapasok?

**mda** · April 30th, 2012 10:04 AM

Yung mga passenger car naman hindi yata waterproof ang loob ng compartment.

Kung binaha yung ECU sa loob ng hood, malamang paabot na rin yan sa gilid ng passenger door.

I think yung mga may airtight compartments talaga yung mga pick-up trucks and ladder-frame SUVs.

**shadow** · April 30th, 2012 10:23 AM

Kung talsik talsik ng tubig hinde papauskin yun eh Meron naman cover Kahit Sa engine bay nakalagay eh, Saka I think mas mataas pag Sa engine bay nakalagay

**tomboy** · April 30th, 2012 10:40 AM

Originally Posted by tomboy

Para iwas baha if sa gilid ng passenger door nakalagay?

Mali pagkaconstruct ko: Dapat "Para iwas baha if sa hood. Kasi mga 1990s car nasa gilid ng passenger door.(Civic EK)

**Gecko Guy** · April 30th, 2012 10:47 AM

Is the ECU same as MICU? Sa FD nasa loob naman yun, sa driver's area left side (under the dashboard)..

**vinj** · April 30th, 2012 10:58 AM

AFAIK, it's constructed to protect itself from the elements. After Ondoy, the engine bay mounted ECU in the Vios of my in-laws did not need replacement (the battery terminal was just disconnected before the waters went up high) and the car started up the next day after cleaning it out. Three years and 40,000kms later, the car runs fine.

On the other hand, the EPS and another electronic unit (junction box?) which were both located inside the car needed replacement with brand new units.

**niky** · April 30th, 2012 02:45 PM

Yeah. Most engine bay ECUs are water-protected.

**paulgozon** · May 8th, 2013 12:37 AM

profit for the manufacturer, they put the ecu in the engine bay, some on top of the engine itself, to save on wires, lots of wires. This is not an ideal place for the ecu its a harsh environment heat, vibration, dirt and moisture from an engineering point of view, but from a CEO point of view this is profit.

**boybi** · May 8th, 2013 12:48 AM

Originally Posted by paulgozon

profit for the manufacturer, they put the ecu in the engine bay, some on top of the engine itself, to save on wires, lots of wires. This is not an ideal place for the ecu its a harsh environment heat, vibration, dirt and moisture from an engineering point of view, but from a CEO point of view this is profit.

Pag tamad magisip yung engineer, then yes, hindi ideal location ang engine bay. Kung magaling yung engineer, kaya nyang gawan ng paraan so the ECU can survive the heat and other elements in the engine bay.

Ilan na ba naencounter nyong nasiraan ng ECU na ang reason e dahil nakalagay sa engine bay?

**oj88** · May 8th, 2013 01:16 AM

Originally Posted by Gecko Guy

Is the ECU same as MICU? Sa FD nasa loob naman yun, sa driver's area left side (under the dashboard)..

Not the same.

ECU/ECM/PCM: Takes care of engine/powertrain functions like fuel, timing, AFR, engine sensors, A/T transmission control, throttle control, iVTEC, etc.
MICU: Takes care of misc. accessories and electronics like wipers, horns, headlights, cabin lights, central door lock, A/C, etc.