ecuinputdata
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ecuinputdata [2008/02/11 13:46] dmertz |
ecuinputdata [2009/02/22 09:49] twdorris |
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| **12/19/2007:** We are now accepting orders for these completed units. We have several in stock, ready to ship. | **12/19/2007:** We are now accepting orders for these completed units. We have several in stock, ready to ship. | ||
| - | http://www.ecmtuning.com/ordering-buffer.html | + | http://www.ecmtuning.com/product_info.php?cPath=26&products_id=39 |
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| Connect "GND to ECU" to the ECU's sensor ground, pin 24 (Green/Black) on a 1G ECU or pin 92 (Black) on a 2G ECU. This is also present under the hood at the MAF, TPS, MDP and coolant temp sensors. | Connect "GND to ECU" to the ECU's sensor ground, pin 24 (Green/Black) on a 1G ECU or pin 92 (Black) on a 2G ECU. This is also present under the hood at the MAF, TPS, MDP and coolant temp sensors. | ||
| - | If the sensor is a 5V sensor that draws little current, like a MAP sensor, connect its power, signal and ground connections to the buffer circuit assembly. If the device, such as a wideband, has it's own power and ground, connect only the signal wire to the device. | + | If the sensor is a 5V sensor that draws little current, like a MAP sensor, connect the sensor's power, signal and ground connections to the input side of the buffer circuit assembly. If the sensing device, such as a wideband, has its own power and ground, connect only the sensing device's signal wire to the input side of the buffer. In either case, you still must provide +5V and GND to the buffer circuit and you must then insulate any unused wires. |
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| - | ====== Details ====== | + | ====== DIY Details ====== |
| The following table lists a set of ECU inputs and their internal pull up/pull down resistor configuration. | The following table lists a set of ECU inputs and their internal pull up/pull down resistor configuration. | ||
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| | EGRTemp | 10k up | - | | | EGRTemp | 10k up | - | | ||
| | Baro | float/100k down? | 3.3k down | | | Baro | float/100k down? | 3.3k down | | ||
| - | | IAT | 2.2k up / 39k down? | 2.2k up / 39k down? | | + | | IAT | 2.2k up / 39k down | 2.2k up / 39k down | |
| - | | Coolant | 2.2k up / 39k down? | 2.2k up / 39k down? | | + | | Coolant | 2.2k up / 39k down | 2.2k up / 39k down | |
| | MDP | - | 100k down | | | MDP | - | 100k down | | ||
| - | | Rear O2 | - | 33K up to 0.38V | | + | | Rear O2 | - | 220k down | |
| Again, the EGRTemp on a 1G and the Baro input on a 2G are problematic for some aftermarket sensors. When feeding certain wideband kits into the EGRTemp input on a 1G, for example, you may see normal A/F ratio readings above 11.5:1 but then the readings flatline there and won't show any value below that. | Again, the EGRTemp on a 1G and the Baro input on a 2G are problematic for some aftermarket sensors. When feeding certain wideband kits into the EGRTemp input on a 1G, for example, you may see normal A/F ratio readings above 11.5:1 but then the readings flatline there and won't show any value below that. | ||
ecuinputdata.txt · Last modified: 2024/03/15 11:16 (external edit)
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