Data Log Bit Fields - MegaSquirt MS3-PRO User Manual

8.2 Capturing data logs
Error number
0
1
2
3
4
5
6
7
8
9
10
12 Error reading file allocation table (FAT)
13 Error reading FAT continuation sector
14
15
16
17
18 Unsupported FAT type (not FAT16)
20
21
22
23 Operation Condition Register (OCR) error 1
24
25
26
28
29
30
31
32
8.2.5 Data log bit fields
Several of the data log fields are a bit code. To decypher a bit field, you need to determine what
combination of numbers adds up to the final number. Do this by taking the first code number that is
smaller than the value displayed, subtract that, and repeat the process until you've used up all the
numbers. For example, suppose you have a CEL Status code of 15. Here's what you would do.
• The highest number on the chart that is less than 15 is 8. TPS fault. So we have a TPS fault
present.
• Subtract 8 from 15, giving us 7. We'll need to see what codes make up the 7.
• The next lowest value is 4. CLT sensor fault. So there is also a CLT sensor fault.
• Subtracting 4 from 7 gives us 3. So we have more codes to find.
• The nexts lowest number on the chart is 2. MAT sensor fault.
• Subtracting 2 from 3 gives us 1. This is the last code, a MAP sensor fault.
The above combination of faults is likely to be a problem with the VREF voltage or sensor return
wiring, if you run into this status in the real world.
DIYAutoTune.com MS3-Pro manual version 1.036, firmware 1.3.4, 6/10/2015
8 TROUBLESHOOTING AND DATA LOGGING
Error name
No error
Sending clock error
Idle error
Init error
Set block size
Request CSD
Error reading MBR
MBR end marker not found
No partition 1 defined
Error reading partition boot sector
Error reading directory
Error writing FAT
Error reading directory
Error writing directory
Error writing log sector
SDHC detection error
VCA check pattern failed
VCA voltage rejected
OCR2
OCR3
OCR4
Error processing CSD
Write failed
Directory full
Can't find space in FAT
Looks like VBR but not valid
Notes
SD logger is working correctly.
Possible card fault. Try replacing SD card.
Possible card fault. Try replacing SD card.
Possible card fault. Try replacing SD card.
Possible card fault. Try replacing SD card.
The SD card being used is an unsupported type.
Erase files and reformat SD card.
Erase files and reformat SD card.
Erase files and reformat SD card.
Possible card fault. Try replacing SD card.
Possible card fault. Try replacing SD card.
Possible card fault. Try replacing SD card.
Possible card fault. Try replacing SD card.
Possible card fault. Try replacing SD card.
Possible card fault. Try replacing SD card.
Possible card fault. Try replacing SD card.
Possible card fault. Try replacing SD card.
Erase files and reformat SD card.
Try reformatting SD card.
Possible hardware fault. Try replacing SD card.
Possible hardware fault. Try replacing SD card.
Possible hardware fault. Try replacing SD card.
Possible hardware fault. Try replacing SD card.
Try reducing data logging speed.
Possible card fault. Try replacing SD card.
Full SD card - delete data logs.
Full SD card - delete data logs.
Erase files and reformat SD card.
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