Technical Support

TECHNICAL SUPPORT

Manuals / EU3 Modification / Contact / Trouble Shooting

User Manuals

Please click on one of the following to open documentation in the desired format. If opening a PDF file you may want to right-click and select ‘Save Target As...’ to save a file on your local disc.

User Manuals
SureShift 2	HTML User Guide PDF User Handbook (265k)
SureShift SB	HTML User Guide PDF User Handbook (190k) Javascript Interactive User Guide (110k)
SmartMax	HTML User Guide PDF User Handbook (225k)
Technical Guides
Low Voltage Tachometer	Modification for low voltage tachometer signal (eg Caterham - EU3)

Email Technical Support

Please click here to e-mail your technical support question: techsupport@aceserve.co.uk

Trouble Shooting

Connection to Coil / Tachometer Output

Connection to Coil
I cannot get my system to read any RPM value My system is detecting RPM but the values are erratic My system is detecting RPM and the values are stable. However the values I am seeing are incorrect by a factor
Problem	Possible Causes	Resolution
I cannot get my system to read any RPM value	You have not connected the signal wire to the coil negative terminal	Ensure you have correctly identified the coil negative
	You have modified the signal wire and have shorted onto the screen in the wire	When modifying the signal wire carefully strip back the screen and only connect onto the core wire
	You do not have a good ground connection	Ensure the ACES system ground is connected directly to the battery negative, or to the same ground location as the ignition system
My system is detecting RPM but the values are erratic	You do not have a reliable ground connection	Ensure the ACES system ground is connected directly to the battery negative, or to the same ground location as the ignition system
My system is detecting RPM but the values are erratic	You have a multi-spark ignition system and have connected to the negative side of the coil	You can only get a reliable signal from a multi-spark ignition system by connecting to the Tacho output Manufacturers of multi-spark ignition systems include MSD, Crane & Accel
My system is detecting RPM and the values are stable. However the values I am seeing are incorrect by a factor	The number of cylinders setting has been set up incorrectly for the ignition system in the vehicle	The ACES system assumes that a single coil fires all cylinders on a 4 stroke engine. Therefore vehicles with a mutilple coil ignition system, a wasted spark ignition system, a Tacho output or having a 2 stroke engine often require that the number of cylinders configured is different to the number of cylinders the engine actually has. If the ACES system is reading too high RPM - increase the number of cylinders set. If the ACES system is reading too low RPM - decrease the number of cylinder set.
Connection to a Tachometer Output
I cannot get my system to read any RPM value My system is detecting RPM but the values are erratic My system is detecting RPM and the values are stable. However the values I am seeing are incorrect by a factor
Problem	Possible Causes	Resolution
I cannot get my system to read any RPM value	You have not connected to the correct output from the ECU or ignition module	Refer to the manual for ECU or ignition system and confirm that you have identified the correct output
	You have modified the signal wire and have shorted onto the screen in the wire	When modifying the signal wire carefully strip back the screen and only connect onto the core wire
	You do not have a good ground connection	Ensure the ACES system ground is connected directly to the battery negative, or to the same ground location as the ignition system
	The ECU output is not compatable with the ACES system (Somes ECU's only produce a low voltage output (eg EU3 system on some Caterhams) - the ACES system needs to "see" a minimum of 8 Volts) Refer to ECU manual, check output on an oscilliscope to confirm output	Option 1: Fit pull up resistor (typically 10K) between signal wire and a 12v supply (first check with ECU manufacturer that this will not damage the ECU) Option 2: Increase sensitivity of the SureShift - Click for details Option 3: Connect directly to coil negative - not suitable for multi spark ignition systems Option 4: Use HT pick up (call ACES for details) - not suitable for multi spark ignition systems
My system is detecting RPM but the values are erratic	You do not have a good ground connection	Ensure the system ground is connected directly to the battery negative, or to the same ground location as the ignition system
	The ECU output is not compatable with the ACES system (Somes ECU's only produce a low voltage output - the ACES system needs to "see" a minimum of 8 Volts) Refer to ECU manual, check output on an oscilliscope to confirm output	Option 1: Fit pull up resistor (typically 10K) between signal wire and a 12v supply (first check with ECU manufacturer that this will not damage the ECU Option 2: Connect directly to coil negative - not suitable for multi spark ignition systems Option 3: Use HT pick up (call ACES for details) - not suitable for multi spark ignition systems
	The Tacho output has failed	Check ACES system with another Ignition system, or use an oscilloscope to check Tacho output
My system is detecting RPM and the values are stable. However the values I am seeing are incorrect by a factor	The number of cylinders setting has been set up incorrectly for the ignition system in the vehicle	The ACES system assumes that a single coil fires all cylinders on a 4 stroke engine. Therefore vehicles with a mutilple coil ignition system, a wasted spark ignition system, a Tacho output or having a 2 stroke engine often require that the number of cylinders configured is different to the number of cylinders the engine actually has. If the ACES system is reading too high RPM - increase the number of cylinders set. If the ACES system is reading too low RPM - decrease the number of cylinder set.

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