On board diagnostics - Revision history

Happy.smiler at 16:52, 28 November 2025

2025-11-28T16:52:21Z

← Older revision		Revision as of 16:52, 28 November 2025
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	http://forums.seloc.org/viewthread.php?tid=112517		http://forums.seloc.org/viewthread.php?tid=112517
			https://wiki.seloc.org/a/Lotus_20/20_diagnostic_Software

	==External Links==		==External Links==

2025-11-28T15:24:50Z

@@ Line 17: / Line 17: @@
 *EOBD
-In practice it's very close to the USA-based OBD2 standard and most OBD2 scanners will work. The meaning of some of the codes in EOBD are slightly different from OBD2 though.
+In practice it's very close to the USA-based OBD2 (J2534) standard and most OBD2 scanners will work. The meaning of some of the codes in EOBD are slightly different from OBD2 though.
 ==Port Location==
@@ Line 47: / Line 47: @@
 The ScanTool3 provides the ECU reflash and DUMP via the K line, using the L line as an enable latch, the CAN bus is not used for reflashing or ECU dump, though it can be used by Lotus with their internal EFi supplied mapping tools.
 ==OBD-II codes==

2018-01-05T09:45:26Z

Evora

← Older revision		Revision as of 09:45, 5 January 2018
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	===Evora===		===Evora===

	On a cable that hangs down under the dash on the drivers side or (passenger side on left hand drive cars).		<s>On a cable that hangs down</s> under the dash on the drivers side or (passenger side on left hand drive cars).

	Fixed to the aluminium crossmember, pointing down, just past the point where the dash leather stops in the footwell, you should be able to feel it without stretching forward too much from the driving position.		Fixed to the aluminium crossmember, pointing down, just past the point where the dash leather stops in the footwell, you should be able to feel it without stretching forward too much from the driving position.

2018-01-05T09:09:07Z

← Older revision		Revision as of 09:09, 5 January 2018
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	In practice it's very close to the USA-based OBD2 standard and most OBD2 scanners will work. The meaning of some of the codes in EOBD are slightly different from OBD2 though.		In practice it's very close to the USA-based OBD2 standard and most OBD2 scanners will work. The meaning of some of the codes in EOBD are slightly different from OBD2 though.

			==Port Location==

			===Evora===

			On a cable that hangs down under the dash on the drivers side or (passenger side on left hand drive cars).

			Fixed to the aluminium crossmember, pointing down, just past the point where the dash leather stops in the footwell, you should be able to feel it without stretching forward too much from the driving position.

			[[image:2010-Lotus-Evora-Interior.jpg]]

	==DIY==		==DIY==
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	[[Category:Electrical]]		[[Category:Electrical]]
	[[Category:Lotus Elise]]		[[Category:Lotus Elise]]
			[[Category:Lotus_Evora]]
	[[Category:S2]]		[[Category:S2]]

2012-08-19T10:53:54Z

DIY

← Older revision		Revision as of 10:53, 19 August 2012
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	On the S2 Elise it is quite simple to connect to the cars [[ECU]] yourself.		On the S2 Elise it is quite simple to connect to the cars [[ECU]] yourself.

	~~All~~ S2's can be queried using the ISO 9141-2 OBD II protocol for the OBD required error codes and results.		Until 2008 all S2's can be queried using the ISO 9141-2 OBD II protocol for the OBD required error codes and results.
			From 2008 onwards CAN is the only permitted OBD2 protocol.

	All S2 variants also have a CAN bus connection on the same diagnostic connector.		All S2 variants also have a CAN bus connection on the same diagnostic connector.

2011-04-17T09:46:26Z

ODB -> OBD

← Older revision		Revision as of 09:46, 17 April 2011
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	The standard is also referred as: -		The standard is also referred as: -
	*~~ODB2~~		*OBD2
	*~~ODB~~-2		*OBD-2
	*~~ODBII~~		*OBDII
	*~~ODB~~-II		*OBD-II

	In europe the standard is called: -		In europe the standard is called: -

2011-03-05T12:39:44Z

← Older revision		Revision as of 12:39, 5 March 2011
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	==DIY==		==DIY==
			[[Image:OBDII_111R.jpg\|thumb\|left\|OBDII Connector, S2 111R]]
			[[Image:OBDII.jpg\|thumb\|left\|OBDII Connector, S2 Exige]]
			{{clr}}
	On the S2 Elise it is quite simple to connect to the cars [[ECU]] yourself.		On the S2 Elise it is quite simple to connect to the cars [[ECU]] yourself.

2008-06-10T18:02:08Z

DIY

← Older revision		Revision as of 18:02, 10 June 2008
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	The dash unit still uses discrete inputs for the various gauges and information readouts, either connecting directly to sensors or using PWM signals from the ECU.		The dash unit still uses discrete inputs for the various gauges and information readouts, either connecting directly to sensors or using PWM signals from the ECU.

	The Toyota powered S2 (111R, Fed-Elise, Exige2) also connects the CAN bus (running at 1 megabit/s) to the dash unit and does away with most of the discrete inputs to the dash unit.		The Toyota powered S2 (111R, Fed-Elise, Exige2) also connects the CAN bus (running at 1 megabit/s) to the dash unit and does away with most of the discrete inputs to the dash unit, RPM, speed, MIL/CEL, coolant temperature and fuel level are supplied via the CAN Bus, the rest are discreete inputs.

			The ScanTool3 provides the ECU reflash and DUMP via the K line, using the L line as an enable latch, the CAN bus is not used for reflashing or ECU dump, though it can be used by Lotus with their internal EFi supplied mapping tools.

	==OBD-II codes==		==OBD-II codes==

2007-08-08T11:54:44Z

DIY

← Older revision		Revision as of 11:54, 8 August 2007
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	==DIY==		==DIY==
	It is quite simple to connect to the cars [[ECU]] yourself.		On the S2 Elise it is quite simple to connect to the cars [[ECU]] yourself.

	~~The 2005 and on federal cars use~~ the ISO 9141-2 OBD II protocol.		All S2's can be queried using the ISO 9141-2 OBD II protocol for the OBD required error codes and results.

	The S2 also ~~has a~~ CAN bus running at 1 megabit/s ~~used for cluster information~~.		All S2 variants also have a CAN bus connection on the same diagnostic connector.

			For the Rover powered S2 variants the CAN bus is only connected to the engine ECU and used by the Lotus scan tool to reflash/upgrade the ECU and obtain the ECU dump information at the first service.

			The dash unit still uses discrete inputs for the various gauges and information readouts, either connecting directly to sensors or using PWM signals from the ECU.

			The Toyota powered S2 (111R, Fed-Elise, Exige2) also connects the CAN bus (running at 1 megabit/s) to the dash unit and does away with most of the discrete inputs to the dash unit.

	==OBD-II codes==		==OBD-II codes==

2007-08-06T09:11:57Z

DIY

← Older revision		Revision as of 09:11, 6 August 2007
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	The 2005 and on federal cars use the ISO 9141-2 OBD II protocol.		The 2005 and on federal cars use the ISO 9141-2 OBD II protocol.

			The S2 also has a CAN bus running at 1 megabit/s used for cluster information.

	==OBD-II codes==		==OBD-II codes==