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 <<O>>  Difference Topic P07 (r1.2 - 05 Mar 2004 - Dohc Vtec?)
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Note: 303 P07 Code is very similar to 304 P28-A01 Code, at least vectors are the same!

RAM

Location Bytes Description Notes
00CC 1 Speed sensor Km/h
00D9 1 ECT sensor 0v-5v 0x00-0xFF

ROM

Location Bytes Description Notes
1292 1 Vtec Coolant Temp Check (0xD8 enables, 0xFF disables)
1997 1 Speed limiter Value B7 is 183 km/h (114mph); FE is 254 km/h (158 mph)
1998 2 Speed Limiter Routine Bypass Change from jge label_something to two NOPs (00 00) to disable speed limiter
2BA3 2 Checksum Jump Instruction Change JEQ 2BB6 (C9 10) to SJ 2BB6 (CB ??) to disable checksum
60E6 1 Vtec Enable (0xFF enables, 0x00 disables) need to verify ?
60E7 1 Knock Enable (0xFF enables, 0x00 disables) need to verify ?
60FA 1 Vtec VSS Check (0x00 enables, 0xFF disables) need to verify ?
60FB 1 Debug Mode (0xFF enables, 0x00 disables) need to verify ?

 <<O>>  Difference Topic P07 (r1.1 - 25 Feb 2004 - Home.blundar)
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%META:TOPICINFO{author="blundar" date="1077741660" format="1.0" version="1.1"}% P07

92-95 OBD1 Civic VX (D15Z1)

Unique in that it has two 66207 processors (one presumably for the wideband O2)

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Revision r1.1 - 25 Feb 2004 - 20:41 GMT - Home.blundar
Revision r1.2 - 05 Mar 2004 - 15:48 GMT - Dohc Vtec? 		%WEBCOPYRIGHT%