3.2. Standard Electrical Interface

Connectors

Econoseal III connectors

Figure 3.4. Econoseal III connectors


EC36 Pin Signal Name Max Load
EC36-1 Throttle Position Sensor signal
EC36-2 Intake Air Temperature signal
EC36-3 Fast Idle Solenoid 350mA
EC36-4 Drive_08 (misc output) 350mA
EC36-5 High-Power Ground (GND5)
EC36-6 Injector 7 10A
EC36-7 Injector 1 10A
EC36-8 Injector 3 10A
EC36-9 Injector 5 10A
EC36-10 Coil #7 7A
EC36-11 Coil #4 7A
EC36-12 Coil #5 7A
EC36-13 Secondary Trigger
EC36-14 Coolant Temperature signal
EC36-15 Fuel Pump relay 350mA
EC36-16 Drive_09 (misc output) 350mA
EC36-17 Injector 8 10A
EC36-18 Injector 6 10A
EC36-19 Injector 2 10A
EC36-20 Injector 4 10A
EC36-21 High-Power Ground (GND5)
EC36-22 Unassigned
EC36-23 Flyback Rail
EC36-24 Coil #6 7A
EC36-25 Vbatt (Switched with ignition - hot in start and on positions)
EC36-26 Ground (ECU and signal GND, eg. VR-, CLT, IAT)
EC36-27 Primary Trigger
EC36-28 +5V (to sensors)
EC36-29
EC36-30 Drive_11 (misc output) 350mA
EC36-31 Drive_10 (misc output) 350mA
EC36-32 High-Power Ground (GND5)
EC36-33 Coil #1 7A
EC36-34 Coil #2 7A
EC36-35 Coil #0 7A
EC36-36 Coil #3 7A

Table 3.3. EC36 connector pinout


EC18 Pin Signal Name Max Load
EC18-1 Wideband Oxygen #2 Nernst Cell
EC18-2 Exhaust backpressure
EC18-3 Fuel pressure (often used for MAP signal)
EC18-4 Stepper motor channel A 1A
EC18-5 Stepper motor channel C 1A
EC18-6 Drive_B (misc high current output) 7A
EC18-7 Wideband Oxygen Pump -
EC18-8 Wideband Oxygen #2 Pump +
EC18-9 Wideband Oxygen #1 Pump +
EC18-10 Stepper motor channel B 1A
EC18-11 Stepper motor channel D 1A
EC18-12 Drive_A (misc high current output) 7A
EC18-13 Wideband Oxygen #1 Nernst Cell
EC18-14 RS232 communication
EC18-15 RS232 communication
EC18-16 Dallas 1-wire bus
EC18-17 Wideband Oxygen #2 Heater -
EC18-18 Wideband Oxygen #1 Heater -

Table 3.4. EC18 connector pinout


Econoseal connectors mounted to a v3 board.

Figure 3.5. Econoseal connectors mounted to a v3 board.


Econoseal Pin DB9 Pin Header Pin Signal Name
EC18 Pin 14 DB9 Pin 3 SV2 Pin 1
EC18 Pin 15 DB9 Pin 2 SV2 Pin 2
EC36 Pin 25 DB9 Pin 5 SV2 Pin 3 Ground

Table 3.5. RS232 Communications Header Pinout


DB9 Pin Header Pin LCD Pin Signal Name
DB9 Pin 5 2 LCD Pin 1 Ground
DB9 Pin 1 10 LCD Pin 2 Positive Voltage Supply
DB9 Pin 9 1 LCD Pin 4 RS
DB9 Pin 6 7 LCD Pin 5 R/W
DB9 Pin 2 8 LCD Pin 6 Enable
DB9 Pin 3 6 LCD Pin 11 Data bit 4
DB9 Pin 7 5 LCD Pin 12 Data bit 5
DB9 Pin 4 4 LCD Pin 13 Data bit 6
DB9 Pin 8 3 LCD Pin 14 Data bit 7

Table 3.6. LCD Header (JP_LCD) Pinout


Amplifier Pin EGT Pin Signal Name
JP16 Pin 1 Positive (Green) EGT #1 Positive
JP16 Pin 3 Negative (White) EGT #1 Negative
JP16 Pin 2 Positive (Green) EGT #2 Positive
JP16 Pin 4 Negative (White) EGT #2 Negative

Table 3.7. EGT (JP16) Header Pinout


Tyco Pin EC Pin Signal Name
Pin 1 EC18 Pin 13 Nernst Cell Signal
Pin 3 +12 V DC Positive voltage supply
Pin 4 EC18 Pin 18 Heater
Pin 5 EC18 Pin 7 Pump -
Pin 6 EC18 Pin 9 Pump +

Table 3.8. Tyco WB02 Connector Pinout


Tyco WBO2 connector to Econoseal III Connector.

Figure 3.6. Tyco WBO2 connector to Econoseal III Connector.


Header Pin PS2 (Mini DIN6) Pin AT DIN5 Pin Function
1 4 5 VCC
2 3 4 GND
3 1 2 Data
4 5 1 Clock

Table 3.9. PS2 Keyboard (JP_PS1) Header Pinout