Transcript
CANBUS Translator
Overview - Installation and Operating Instructions Contents Overview ................................................................................................................................................. 1 Installation .......................................................................................................................................... 3 Basic Install...................................................................................................................................... 3 GM to Subaru BRZ/Toyota 86 Install............................................................................................... 4 Subaru Legacy Gen4/Gen3 Impreza and non Canbus ECU wiring .................................................. 5 Settings.................................................................................................................................................... 6 Setting the Function ........................................................................................................................ 6 Display Screen (CAN ECU input) ...................................................................................................... 7 Display Screen (hard wired inputs) ................................................................................................. 7
Overview Canbus is a communications protocol used in late model vehicles to enable the various computers within the vehicle to talk to each other over a twisted pair wire. The Canbus protocol is standard, however the messages that are sent are manufacturer (and sometimes model specific). The Canbus translator allows engine conversions with different messaging to the original engine management system to integrate into the vehicle by translating the messaging from the new engine to the existing vehicle’s messaging system. 1
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If a Canbus translator is not used. Data from the new engine management system will not be in the same language as the existing vehicle. Depending on the vehicle, and how much data is on the Canbus network, items such as the Engine Tachometer display and coolant gauge may not work. Similarly, the engine management system may not function correctly if it is looking for the vehicle speed signal from the ABS unit over Canbus. The Canbus Translator can also be used with pre-Canbus engine management systems. It has an RPM pulse sense input, and a temperature sender input to read engine RPM, and also coolant temperature. It then sends this data over the Canbus network as it was from the original vehicles engine management system. Traction Control – Depending on the vehicle, the Canbus Translator translates the traction control signals from the existing vehicles Traction Control/VSC unit, to the new engine management system. An extra feature is a traction adjustment (or gain) which allows you to adjust the sensitivity of the traction control unit for different engine torques. The Unit is able to be programmed from 0% (effectively disabling traction control) to %250, which gives 2.5times more traction control than original. The traction control gain is set by a variable potentiometer, adjusted by a flat-blade screwdriver on the main circuit board.
Function setting – The Canbus translator can be used for a few different engine/vehicle combinations. The one device can do either function, and is set using 8 DIP switches on the main board. These switches are also used to select a 4,6 or 8cylinder RPM input and the temperature sender type.
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Installation Basic Install The Canbus translator is contained within a robust plastic enclosure with mounting tabs allowing it to be screwed or tied to part of the vehicle to keep it secure. A 14 pin multi-pole plug is used to allow easy disconnection and a wiring harness with tails is provided to allow wiring into the vehicles existing wiring harness. Depending on what application the Canbus translator is ordered with, will depend on the wiring configuration of the wiring harness. The primary function of the Canbus Translator is to provide Canbus to Canbus translation. For this basic setup, only 4 Wires are needed as shown below. PIN
MAIN/STRIPE COLOUR
1 7 8 14
WHITE BROWN/BLACK (OR RED) BROWN (OR BLUE ) BLACK
NAME INPUT HS CAN HS CAN INPUT
+12V IGNITION HS-CAN-H HS-CAN-L GROUND
The 12V ignition power wire needs to be tapped off a fused wire (10-20Amps) that is powered up when the ignition key is in the ON (Engine on) state. The CAN wires are to be wired up in parallel with the vehicles Canbus wires. (Brown and Brown/Black for GM, and often Blue and Red for Subaru). Be careful to keep these wires away from harsh electrical loads or cabling. A few twists within the pair will also help prevent any interference.
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CANBUS TRANSLATOR CONNECTION DIAGRAM (LS TO BRZ/86)
HIGH SPEED CAN-H - 7
1 +12V IGNITION
HIGH SPEED CAN-L - 8
OIL PRESSURE LAMP OUTPUT - 13
5 - MIL INPUT (TO ECU)
BRZ/86 CLUSTER
GROUND
+12V IGNITION
GROUND - 14
OIL WARNING LAMP
GM ECU
MIL INDICATOR LAMP
CAN-H VEHICLE'S HS CANBUS
CAN-L (CANBUS OF VEHICLE, CANBUS TRANSLATOR AND GM ECU MUST BE CONNECTED TOGETHER TO BE THE SAME NETWORK)
GM to Subaru BRZ/Toyota 86 Install The BRZ/86 has the MIL (Check Engine Light) controlled via CAN. The GM it is a hard wired from the GM ECU (Usually Brown/white). The Canbus Translator accepts this MIL input from the GM ECU, and transmits the MIL status over CAN. The GM has the oil pressure signals to the oil pressure warning light over CAN. The BRZ has the oil pressure as a hard wired signal to the instrument cluster warning light. The Canbus Translator read the oil pressure values, and grounds a hard wired output wire to illuminate the oil pressure warning if the oil pressure drops below a few psi.
PIN
MAIN/STRIPE COLOUR
5 13
BROWN/WHITE GREEN
NAME INPUT OUTPUT
4
MIL (FROM GM ECU) OIL WANRING (TO DASH)
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CANBUS TRANSLATOR CONNECTION DIAGRAM (TO NON-CAN ENGINE)
HIGH SPEED CAN-H - 7
1 +12V IGNITION
HIGH SPEED CAN-L - 8
2 TACHO (0-12V) 3 ENGINE TEMP SENDER
TEMP SENDER
ECU (NON CAN)
CAN-L
CAN-H
CLUSTER
GROUND (ENGINE BLOCK)
+12V IGNITION
GROUND - 14
VEHICLE'S HS CANBUS TACHO SIGNAL(GEN4 ONLY)
Subaru Legacy Gen4/Gen3 Impreza and non Canbus ECU wiring To wire up the Canbus translator to accept a temperature sensor and Tacho inputs for use on the BRZ/86/Legacy/Impreza wire up as per the above example. Note, the BRZ/86 will also need the oil warring and MIL indicator lamps wired as per the previous example.
PIN
MAIN/STRIPE COLOUR
2
WHITE/RED
Input
3
RED/GREEN
Input
TACHO Coolant Temp
14
BLACK
Input
GROUND
NAME
CONNECTION Connect to the ECU’s Tachometer output. Do not connect direct to the ignition coil. Connect to the Coolant temperature sensor (either Subaru, or Generic Ford/Mazda EFI sensor) This needs to be connected to a solid Ground close to the engine block to avoid errors in the temperature reading
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Settings The Canbus Translator is setup by adjusting two sections on the main circuit board inside the enclosure. Once set, there should be no need to further change any settings. To open the enclosure unscrew the four (4) Philips head screws on the top panel, to remove the panel. The circuit board will have a DIP switch block with eight (8) switches which can be turned ON or OFF using a small screwdriver or fngernail. This set of switches allows you to set the function of the Canbus Translator. The Rotary dial allows you to adjust the traction control gain from 25% to 250%. It is adjusted using a small flat blade screwdriver. Turning clockwise increases the gain, anticlockwise decreases the gain. The gain is showed on the LCD screen when it is on a function that allows traction control.
Setting the Function
Function Canbus ECU (GM) 4 cylinder (HW only) 6 cylinder (HW only) 8 cylinder (HW only) BRZ/86 Vehicle Subaru EJ Vehicle Ford/Mazda Temp (HW only) Subaru Temp (HW only)
Switch1 OFF ON ON ON
Switch2
Switch3
OFF ON ON
OFF OFF ON
Switch4
Switch5
Switch6
Switch7
Switch8
OFF ON OFF ON
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Display Screen (CAN ECU input)
The display screen shows the current configuration and also the current translation data for diagnostic purposes. The unit will also flah up when Canbus messages are being received on both networks. It flash up GMLAN, if it senses GM Canbus messages. Similarly it will flash up SUBCAN if it senses Subaru CAN messages. The bottom line also shows the traction gain as set by the traction rotary dial.
Display Screen (hard wired inputs)
The Hardwired display screen shows the current configuration and also the RPM value from the hard wired tacho signal. It also shows the temperature from the coolant temperature sensor.
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