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 <<O>>  Difference Topic P0A (r1.3 - 18 May 2006 - Home.kabuki)
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attached pic is a 94 P0A-A51
PCB is IPT 02D010B0-1502

The data below has been copied over from the P13 page as a place holder. Only a few of the locations are actually known at this time.

RAM

Location Bytes Description Notes
1 MAP sensor
1 Tps Sensor OBD1_8bit TPS
2 RPM in 16bit form
1 ECT Sensor ??
1 VSS Sensor km/h
1 Column of table See ROM @6050 - mBar scale
1 Row of low cam table See ROM @6000 - low cam RPM scale
1 Row of high cam table See ROM @6028 - high cam RPM scale
2 CEL Word #1 contains 0x0000 otherwise a bit depending on CEL
2 CEL Word #2 contains 0x0000 otherwise a bit depending on CEL
2 CEL Word #3 contains 0x0000 otherwise a bit depending on CEL
2 CEL Word #4 contains 0x0000 otherwise a bit depending on CEL
2 Actual Rev Cut OBD1_16bit RPM
2 Actual Rev Resume OBD1_16bit RPM
1 Current RPM in 8bit form  
1b VTEC Active ??
1b A/C Switch Input If pin B5 (ACS) is grounded, 0x0224.0 will read 1
1 RPM in 8bit form  
1 O2 sensor ???
1 IAT sensor 0v-5v 0x00-0xFF
1 Baro Sensor 0v-5v 0x00-0xFF
1 ECT sensor 0v-5v 0x00-0xFF

ROM

Location Bytes Description Notes
0C90 4 Checksum Jump Instruction Change 909DF17F->03A40C00 to disable checksum
2 High Cam Rev Limit Reset Moved to memory here as well as the later entries
2 High Cam Rev Limit Set Moved to memory here as well as the later entries
1 Speed Limiter 0-255km/h (0-159MPH) FF disables speed limiter
1 VTEC Coolant Temp Check (0x44 enables, 0xFF disables)
2 Low Cam Rev Limit Reset OBD1_16bit RPM format
2 Low Cam Rev Limit Set OBD1_16bit RPM format
2 High Cam Rev Limit Reset OBD1_16bit RPM format
2 High Cam Rev Limit Set OBD1_16bit RPM format
6000 40 Low Cam Rev Scalar 1x40 Each scalar is in OBD1_16bit RPM format
6028 40 High Cam Rev Scalar 1x40 Each scalar is in OBD1_16bit RPM format
6050 10 Low and High Cam Map Scalar 1x10 [OBD1_8bitMBar]
605A 40 A scalar? Or Multiplier? 1x40 16bit format
6082 40 A scalar? Or Multiplier? 1x40 16bit format
60AA 200 Low Cam Fuel Table Unknown Conversion Formula
6172 200 High Cam Fuel Table Unknown Conversion Formula
623A 110 Extra Table - no idea, simular to maps @6316 & 6384 10 col x 11 row
62A8 110 Extra Table - no idea, simular to maps @6316 & 6384 10 col x 11 row
6316 110 Extra Table - no idea, all 80s 10 col x 11 row
6384 110 Extra Table - no idea, all 80s 10 col x 11 row
63F8 200 Low Cam Ignition Table OBD1_8bit Advance
64C0 100 Extra Low Cam Ignition Table 10 col x 10 row
642E 100 Extra Low Cam Ignition Table 10 col x 10 row
659C 200 High Cam Ignition Table OBD1_8bit Advance
6664 100 Extra High Cam Ignition Table 10 col x 10 row
66D2 100 Extra High Cam Ignition Table 10 col x 10 row
681C 110 Extra Table - no idea, all 00s 10 col x 11 row
688A 120 Extra Table - no idea, all 00s 10 col x 12 row
|7FF1|1|Debug/Test mode????| 0xFF enables, 0x00 disables???? here|4-95 OBD1 Accord EX

 <<O>>  Difference Topic P0A (r1.2 - 19 Feb 2004 - Home.blundar)
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94-95 OBD-1 Accord EX

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94-95 OBD1 Accord EX


 <<O>>  Difference Topic P0A (r1.1 - 18 Feb 2004 - Home.Speedz)
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%META:TOPICINFO{author="Speedz" date="1077071160" format="1.0" version="1.1"}% P0A

94-95 OBD-1 Accord EX

attached pic is a 94 P0A-A51
PCB is IPT 02D010B0-1502

%META:FILEATTACHMENT{name="P0A_A51.JPG" attr="" comment="" date="1077071051" path="C:\Documents and Settings\Speedz\Desktop\P0A_A51.JPG" size="442912" user="Speedz" version="1.1"}%


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Revision r1.1 - 18 Feb 2004 - 02:26 GMT - Home.Speedz
Revision r1.3 - 18 May 2006 - 18:59 GMT - Home.kabuki 		%WEBCOPYRIGHT%