HitmanBlood
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« on: November 12, 2020, 06:43:46 AM »
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Hi guys. Need help with DSLOFS and DSLGRAD sensor map. The sensor number is 0 281 002 437. I tried to calculate using the formula I got DSLGRAD 657.77 and DSLOFS -54.4075, but the ECU gives an error on the sensor test when the engine starts. Who can check if I calculated correctly, maybe I found the wrong sensor readings
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gremlin
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« Reply #1 on: November 12, 2020, 08:56:39 AM »
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Who can check if I calculated correctly, maybe I found the wrong sensor readings
It depends to which ecu you work. Give exact ecu identfiers. |
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HitmanBlood
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« Reply #2 on: November 12, 2020, 08:58:34 AM »
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It depends to which ecu you work.
Give exact ecu identfiers.
Bosch me1.5.5 engine z20let opel astra G native sensor number 0 261 230 042 |
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« Last Edit: November 12, 2020, 09:04:04 AM by HitmanBlood »
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gremlin
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« Reply #3 on: November 12, 2020, 09:17:54 AM »
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Bosch me1.5.5
For 0 281 002 437 sensor in ME1.5/ME7.5/MED9.1 ecus. DSUGRAD = (3000 hPa - 200 hPa)/(4.65 V - 0.4 V) = 658.8 hPa/V DSUOFS = 200 hPa - (0.4 V * 658.8 hPa/V) = - 63.5 hPa |
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HitmanBlood
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« Reply #4 on: November 12, 2020, 09:24:04 AM »
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For 0 281 002 437 sensor in ME1.5/ME7.5/MED9.1 ecus.
DSUGRAD = (3000 hPa - 200 hPa)/(4.65 V - 0.4 V) = 658.8 hPa/V
DSUOFS = 200 hPa - (0.4 V * 658.8 hPa/V) = - 63.5 hPa
And according to my values it could give an error? |
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« Last Edit: November 12, 2020, 09:26:15 AM by HitmanBlood »
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HitmanBlood
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« Reply #5 on: November 12, 2020, 09:33:03 AM »
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I did according to these characteristics  |
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gremlin
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« Reply #6 on: November 12, 2020, 09:49:37 AM »
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I did according to these characteristics
I trust more what is written in the official Bosch datasheet. Or your sensor is thrid party fake analog... |
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« Last Edit: November 12, 2020, 09:53:21 AM by gremlin »
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HitmanBlood
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« Reply #7 on: November 12, 2020, 09:56:48 AM »
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I trust more what is written in the official Bosch datasheet.
Or your sensor is thrid party fake analog...
I have a Bosch sensor. Do I need to change UADPUMX in the original I have 4.9804V |
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« Last Edit: November 12, 2020, 10:04:02 AM by HitmanBlood »
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HitmanBlood
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« Reply #8 on: November 12, 2020, 10:15:43 AM »
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For 0 281 002 437 sensor in ME1.5/ME7.5/MED9.1 ecus.
DSUGRAD = (3000 hPa - 200 hPa)/(4.65 V - 0.4 V) = 658.8 hPa/V
DSUOFS = 200 hPa - (0.4 V * 658.8 hPa/V) = - 63.5 hPa
And the voltage is exactly correct for you (4.65 V - 0.4 V). I personally see min. typ. max. Lower limit UA min V 0.25 0.3 0.35 Upper limit UA max V 4.75 4.8 4.85 |
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« Last Edit: November 12, 2020, 10:22:38 AM by HitmanBlood »
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gremlin
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« Reply #9 on: November 12, 2020, 11:01:19 AM »
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And the voltage is exactly correct for you (4.65 V - 0.4 V). I personally see
min. typ. max.
Lower limit UA min V 0.25 0.3 0.35
Upper limit UA max V 4.75 4.8 4.85
What is the relationship between min / max output voltage limits of the sensor and calibration curve points? Different things. |
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HitmanBlood
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« Reply #10 on: November 12, 2020, 11:04:56 AM »
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What is the relationship between min / max output voltage limits of the sensor and calibration curve points?
Different things.
I thought that the sensor was calibrated according to these parameters, here is the formula by which I did |
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gremlin
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« Reply #11 on: November 12, 2020, 12:08:08 PM »
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I thought that the sensor was calibrated according to these parameters, here is the formula by which I did
The same formulae as i give above. But max/min voltages in this formulae is edge points of linearization curve, not limits. Minvoltage [0.4V] > Lower limit UA min V 0.25 0.3 0.35 Maxvoltage [4.65] < Upper limit UA max V 4.75 4.8 4.85 |
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HitmanBlood
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« Reply #12 on: November 12, 2020, 07:47:07 PM »
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The same formulae as i give above.
But max/min voltages in this formulae is edge points of linearization curve, not limits.
Minvoltage [0.4V] > Lower limit UA min V 0.25 0.3 0.35
Maxvoltage [4.65] < Upper limit UA max V 4.75 4.8 4.85
Do I need to change UADPUMX in the original I have 4.9804V? |
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gremlin
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« Reply #13 on: November 13, 2020, 08:54:27 AM »
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Do I need to change UADPUMX in the original I have 4.9804V?
No need to change it. |
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HitmanBlood
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« Reply #14 on: November 14, 2020, 10:44:22 AM »
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No need to change it.
OK, thank you very much |
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